9201-043. Andhyariyina KB, Salgare SA (Dept Bot, Inst Sci, Bombay 400032 Maharashtra). Effect of polluted water of Ulhas river on the physiology and rate of growth of its bank vegetation I. Growth Delu Nat Resource Conserv (Ed SR Verma), Nature Conservators (1990), 35-53 [33 Ref].
Polluted water of Ulhas river inhibited green pigments of chlorophyll-a, chlorophyll-b and total chlorophyll, vitamins like C, B1, B2, and organic contents of total carbohydrates, proteins and liquids observed in the plant species. Due to inhibition in the contents of chlorophylls, vitamins and organic contents, adverse effects have been created in biosynthetic processes leading to growth performance of the bank vegetation of Ulhas river.
9201-044. Appa Rao BV, Gopal V, Karthikeyan G, Pius Anitha, Meenakshi S (Gandhigram Rural Univ, Chem Dept, Gandhigram 624302). Ground water pollution due to tannery effluents in certain areas of Dindigul town of Tamilnadu. Indian J Environ Prot, 11 (8) (1991), 568-571 [3 Ref].
An attempt has been made to assess the extent of pollution of ground water sources in and around the tannery units located in the southern side of Dindigul town. It has been found that the amounts of total solids, hardness and chlorides in the ground water sources are several times higher than the tolerance limits for drinking and industrial purposes; fluorides, oxygen, BOD, and pH are within the limits. Remedial measures have been suggested in order to control further ground water pollution and save the people as well as industries of Dindigul town from a big water crisis in the near future.
9201-045. Chandra Harish, Modak DP, Gupta BN, Ray PK (Indl Toxico Res Cent, Water Analysis Lab, Mahatma Gandhi Marg, Lucknow 226001). Evaluation of drinking water quality during Mahakumbh Mela, January-February, 1989 at Allahabad: a case study. Indian J Environ Prot, 11 (7) (1991), 487-491 [4 Ref].
During Mahakumbh Mela held at Allahabad in the month of January-February, 1989, the monitoring of drinking water quality was done in Allahabad city and the Mela area. 85 drinking water samples from tube wells and hand pumps were analysed for physicochemical and bacteriological parameters to assess their potability for humans. The values of various parameters ranged between desirable and maximum permissible limits; No bacterial contamination was detected in any water samples which had free residual chlorine of 0. 2 mg/1 or above.
9201-046. Ghandrashekar M, Rajagopal S, Balasubramanian S (Dept Environ Sci, Bharathiar Univ, Coinabatore 641046). Statistical studies on the correlation of dissolved oxygen levels with environmental factors in Amaravathi river (South India). Env Eco, 9 (1) (1991), 77-80 [9 Ref] (Late Recd).
Paper deals with the problem of loading of pollution in a river system with the contribution of various water quality parameters affecting the dissolved oxygen level. A statistical model is evolved to assess the water quality in various points after the pollution loading. The results show that self purification plays a major role in the Amaravathi river water quality.
9201-047. Chauhan Anil (Hydrobio Lab, Govt PG Coll, Chhindwara 480001). Effect of distillery effluent on river Wainganga. Indian J Environ Hlth, 33 (2) (1991), 203-207 [9 Ref].
Effect of distillery effluent on the characteristics of river Wainganga, before and after closure of the factory was studied. Addition of the effluent to the river caused toxic conditions by increasing BOD, COD, and TSS along with decrease in DO.
9201-048. Chona MK (Dept Zoo, Panjab Univ, Chandigarh 160014). Physicochemical complexes of a polluted pond at Halomajra (Chandigarh). Himalayan J Environ Zoo, 5 (1) (1991), 42-44 [4 Ref].
Water samples of Halomajra pond, (Chandigarh) were analysed for temperature, pH, DO, free CO2, total alkalinity, phosphates, nitrates, chlorides, TDS, TSS, and BOD. It was observed that the pond was originally polluted due to high values of BOD, nitrates, phosphates and chlorides.
9201-049. Choudhury SK (Dept Bot, TNB Coll, Bhagalpur Univ, Bhagalpur 812007). Sediment characteristics of the river Ganga in Sultangan - Bhagalpur region, Bihar. Env Eco, 9 (1) (1991), 249-251 [11 Ref] (Late Recd).
Studies on sediment characteristics of the river Ganga at six sampling sites in Sultanganj - Bhagalpur region were undertaken from December 1982 to November 1983. The study reveals the sandy loam nature of the sediment soil, pH being slightly acidic to moderately alkaline and higher mean values of nitrate, phosphate and organic matter content for contaminated sites as compared to control and recovery sites.
9201-050. Dutta A, Chaudhuri M (Consulting Engng Ser (India) Pvt Ltd, 57 Nehru Place, New Delhi 110019). Removal of arsenic from groundwater by lime softening with powdered coal additive. J Water Supply Res Techno Aqua, 40 (1) (1991), 25-29 [21 Ref].
In a laboratory lime softening test, maximum removal of arsenic from a ground water was 90% at a lime dose of 1250 mg/1 (pH 11. 8). With powdered bituminous coal additive (2 g/l), residual arsenic level below the VVH0 guideline value (0. 05 mg/l) was achieved at a lime dose of 800mg/1 (pH 11. 5). The magnesium-hydroxide precipitate played a more significant role in removing arsenic, particularly As3+.
9201-051. Gadh Ranu, Singh OV, Tandon SN, Mathur RP (Dept Chem, Univ Roorkee, Roorkee 247667). A study of water quality and metal speciation of Yamuna river. Asian Env, 13 (2) (1991), 3-10 [14 Ref].
A study of the water quality parameters, total metal and metal speciation of the Yamuna river waters from Dakpathar to Agra has been undertaken. An attempt has been made to expound their temporal and spatial variations. The studies indicate that pollutional load increases along its route downstream the river. A larger percentage of cadmium, copper and zinc are in the bound form (particulate and dissolved) while lead is more bioavailable.
9201-052. Gajghate DG, Reddy PJ (Natl Environ Engng Res Inst, Zonal Lab, Hyderabad 500007). Nitrate problem in ground water resources. Polln Res, 9 (1990), 121-125 [4 Ref] (Late Recd).
A recent study of Musi river water shed in Hyderabad indicates that the nitrate level in water decreased from the year 1988 but potential of water level increased during the same period. Alarming nitrate levels have been observed which exceed excessive limit of drinking water standard and there is an imperative need for proper control of indiscriminate industrial discharge and sewerage system to safeguard sources.
9201-053. Garg Dinesh K, Goyal RN, Agarwal VP (Dept Chem, Univ Roorkee, Roorkee247667). Study of physicochemica} and bacteriological factors of tube well water-II Roorkee city (India). Adv Bio Sci, 10 (1) (1991), 73-76 [9 Ref].
Analysis of six tube well water which are the source of drinking water in Roorkee city of Hardwar district was carried out along with physicochemical and biotic analysis. Presence of bacterial community in relation to biotic factors is saught.
9201-054. Halder P, Kole RK, Bhattacharya A, Choudhury A, Adityachaudhary N (Pesticide Residue Lab, Dept Agricl Chem Soil Sci, Fac Agric, Bidhan Chandra Krishi Viswavidyala, Kalyani 741235, Nadia W. B). Studies on the residues of the BHC isomers (a, b, c, d accurring in Ganga waters. Polln Res, 9 (1990), 51-56 [4 Ref] (Late Recd).
The results of the amount of BHC isomers (a, b, c, d occurring in Ganga water from a selected stretch of the river obtained for the first time in West Bengal are discussed. The water samples were collected from both the banks of the Ganga and also from canals linking the Ganga. N-Hexane was used as partitioning solvent for extraction of BHC residues from water samples. It was found that out of the 36 samples so far analysed the BHC residues ranged from 0, 0010. 002 ppm in 21 samples.
9201-055. Hasan SH, Rai Sadhana, Joshi VC, Rupainwar I)C (Dept Ceramic Engng, Inst Techno, Banaras Hindu Univ; Varanasi 221005). Removal of cadmium (II) from its hydrochloric acid solutions and polluted waters by extraction method. Asian Env, 13 (3) (1991), 48-59 [15 Ref].
An indigenous solvent in tri-iso amyl phosphate (TAP) prepared from a byproduct of Indian Alcohol Industry has been utilised for the extraction and removal of cadmium (II) from hydrochloric acid solutions. The optimum conditions for the extraction of 92.14% of cadmium (II) from its 4.5 M hydrochloric acid solutions are 25% TAP in benzane (vol./vol.) and 1.0x103 M of cadmium (II) concentration. The effect of various parameters and the diluents on the extraction has been investigated and discussed.
9201-056. Israili Abdul Wahid, Nabi Ald, Qadeer Hasan, Naqvi S (Dept Geo, AMU Aligarh). Heavy metal pollution studies in western Uttar Pradesh. Polln Res, 9 (1990), 57-61 [9 Ref] (Late Recd).
Analytical results of trace metals namely, Fe, Cu, Zn, Ni, Co, Pb and Cd in soil sediments and associated water bodies of the districts of Western Uttar Pradesh reveal that the levels of Cu, Zn, Co, Pb, and Cd are well within the permissible limits as recommended by various organisations, whereas concentrations of Cr, Fe, Mn and Ni exceed much above the recommended values in both water as well as soil sediments of districts Meerut, Ghaziabad, and Saharanpur. Respiratory illness, neurological disorders are common symptoms associated with higher Mn uptake in the districts of Saharanpur and Muzaffarnagar. Development of dermatitis in some workers engaged in electroplating polishing, paint and pigment industries in Saharanpur may be caused by Ni poisoning. Lead in human body may affect skin, gastrointestinal tract, lungs and central nervous system and several cases of these damages are noticed to be reported daily in various hospitals of Meerut district. The symptoms of Cd poisoning such as vomitinga abdominal cramps, headaches and shortness of breath are common among the human beings of districts Meerut and Ghaziabad.
9201-057. Joseph KO (Centl Inst Brackishwater Aquaculture7 120, Leith Castle Street, Santhome, Madras 600028). Possible role of estuarine sediments in mitigation of mercury loading .in biological systems. Indian J Marine Sci, 20 (4) (1991) 286-288 [15 Ref].
Concentration of mercury was estimated in samples of water? bottom sediments and fish from Ennore estuary during 198283. The uptake of mercury from water by fish is about 400 times. The concentration of Hg in water is 0. 0012,µg ml-1 while its level in bottom sediment is 0. 6µg g-1. The higher concentration of Hg in soil substrate is attributable largely to fine particulate organic carbon.
9201-058. Kamraj Pe Jacob Sobha, Sathyamurthi N, Srinivasan D (Dept Cheml lBngng, Alagappa Coll Techno, Anna Univ, Madras 600025). Sulphide precipitation technique in the removal of heavy metals. Indian J Environ Hlth, 33 (2) (1991), 208-212 [5 Ref].
Results of a study conducted on the application of sulphide precipitation technique on the removal of Pb, Cd, and Ag when they are present together are reported. The effect of pH, sulphide dosage and interference by chelating agents has been ascertained. The results indicate that the sulphide precipitation technique is effective in simultaneous removal of three or more metals.
9201-059. Kapur R, Sharma Archana, Khan SajJan (Microbio Biotechno Lab, Sch Environ Bio, APS Univ, Rewa, MP). Bacterial incidents of polluted water and their emerging antibiotic resistance. Polln Res, 9 (1990) 83-90 [43 Ref] (Late Recd).
Paper reviews the bacteriological indicators of polluted waters, suggests criteria for an ideal indicator of polluted waters and discusses sensitivity and resistance among indicator bacteria of polluted waters.
9201-060. Kaveeshwar Rachana, Cherian Lata, Gupta VK (Dept Chem, Ravishankar Univ, Raipur 492010). A simple method for the detection of mercury in air, water and soil samples. Asian Env, 13 (3) (1991), 37-42 [19 Ref].
A simple method for the detection of mercury is described. The method is based on the ligand exchange reaction. The reaction has been successfully applied for the detection of mercury in polluted water, air, and soil samples. In air at a velocity of 0.25 l/min. of the impinging air and a reaction temperature of ~70° C as low as 0.01µg of mercury (II) could be easily detected after 10 min exposure. In water, the limit of identification and limit of dilution were found to be 0.06µg and 1:8, 30,000 respectively. Development of test papers and indicator tubes for the detection of mercury in air/water have also been done.
9201-061. Kumar Om, Bisht Shashi, Singh Neelu (Environ Res Stn, Forest Res Inst, Dehradun 248006). Studies on water quality, vegetation and fish of Song river is eastern Doon Valleys forests. Uttar Pradesh J Zoo, 10 (2) (1990) 143-147 [10 Ref].
Present investigation is a preliminary report dealing with influence of water quality on vegetation and fish. It highlights physicochemical and biological characteristics of river water. The changes in vegetation and fish at different sites have also been recorded.
9201-062. Kumar Sheo, Saha LC (Univ Dept Bot, Bhagalpur Univ, Bhagalpur 812 007). Assessment of drinking water quality of Bhagalpur. Biol Bull India, 11 (1) (1989), 9-13 [11 Ref].
The population of Bhagalpur town is mainly fed by surface water and underground water which are contaminated through seepage from deep sewerage, septic tanks, drains and domestic outlets. Comparatively, hand pump of underground water source, showed higher concentrations of total solids, free CO2, HCO3 alkalinity, total and calcium hardness, chloride, NO3N, Ca++ and Mg++ whereas total bacterial density was maximum in well water.
9201-063. Madhusudhana Reddy P, Subba Rao Nj Reddy BRG (Andhra Univ, Hydrogeo Lab, Dept Geo, Visakhapatnam 530003). Hydrogeochemical studies in Seetammadhara of the Visakhapatnam urban area. Indian J Environ Prot, 11 (8) (1991), 601-604 [6 Ref].
Hydrogeochemical studies have been carried out in Seetammadhara, which is an integral part of the Visakhapatnam urban area. Water samples were collected from both dugwells and bore-wells and analysed for chemical quality studies. The controlling factors of groundwater chemistry and criteria for water uses were discussed.
9201-064. Meenakshi S, Pius Anitha, Karthikeyan G, Appa Rao BV (Gandhigram Rural Inst, Chem Dept, Gandhigram 624302). The pH dependence of efficiency of activated alumina in defluondation of water. Indian J Environ Prot, 11 (7) (1991), 511-513 [7 Ref].
The pH dependence of defluoridation capacity of activated alumina (neutral) and also the conditioned basic and acidic varieties has been investigated in a wide pH range. A markedly high efficiency of the defluoridation capacity of all the 3 types of activated alumina at pH 3 was observed. Such a marked rise in fluoride absorption at pH 3 has been explained on the basis of a marked increase in the number of active sites of alumina at this pH value. The observed decrease of fluoride adsorption from pH 3 to pH 2 has been interpreted on the basis of greater tendency or fluoride ions at pH 2 than at pH 3 to form complexes like HF and HP with H+ ions.
9201-065. Mittal Sharad, Sengar RMS (Microbio Res Lab, Dept Bot, Agra Coll, Agra). Studies on the assessment of water pollution in Karwan river. Polln Res, 9 (1990), 91-94 [10 Ref] (Late Recd).
Physicochemical characteristics of water of Karwan river, Agra, U.P, India, were studied at various sampling stations in the stretch of 15 Km towards upstream from its merger into Yamuna to assess the magnitude of pollution. The parameters showed that the river was highly polluted at station Ill in all the seasons due to the discharge of domestic and industrial effluents into it.
9201-066. Mohan Man (Dept Zoo, Univ Garhwal, SRT Campus, Tehri, TehriGarhwal 299001). Siltation and lotic entomofauna of river Bhagirath and Bhilangana of Tehri Garhwal Himalaya. Polln Res, 9 (1990), 127-130 [7 Ref] (Late Recd).
Quantitative estimation of silt in the waters of rivers Bhagirathi, Bhailangana and its tributary the Nailchamigad of Tehri Garhwal Himalaya has been done during last two years (198688): Effect of silt pollution on aquatic insects of these waters has been worked out.
9201-067. Naik UG, Neelakantan B (Dept Marine Bio, Karnataka Univ, Kodibag, Karwar 581303). Hydrological conditions of the surface waters of Kali estuary, Karwar. Env Eco, 9 (1) (1991), 37-46 [15 Ref] (Late Recd).
The hydrographic factors of Kali estuary varied spatially and temporally but the impact of the latter on the biotic community was conspicuous. Change in the weather condition was noticed according to the seasons at this latitude with heavy rainfall, high percentage of relative humidity during the southwest monsoon season. Surface water temperature and salinity registered low and maximum during these seasons.
9201-068. Naryana AC, Pandarinath K (Dept Marine Geo, Mangalore Univ, Mangalagangotri 574199). Sediments of Nethravati estuary back water environment, Karnataka west coast of India. Env Eco, 9 (3) (1991) 571-579 [7 Ref].
During high tide, the sea water enters into small streamlets and stagnants as back waters adjacent to the Nethravathi estuary. The sedimentation and sediment characteristics were entirely different from that of estuarine environment. The textural and physicochemical studies showed the presence of two distinct sedimentary environments in this back water zone.
9201-069. Nithila P, Jayarama Reddy S (Sri Venkateshwara Univ, Dept Chem, Tirupati 517502). Speciation studies using differential pulse anodic stripping voltammetry of Tirupati waters. Indian JEnviron Prot, 11 (8) (1991), 587-591 [13 Ref].
A preliminary survey on the physicochemical speciation of water in and around Tirupati has been carried out. Particulate and the dissolved matter are separated using 0.451,lm membrane. Differential pulse anodic stripping voltammetry is employed to calculate ASV liable, total dissolved form and total metal concentration. The parameters, such as bound metal and particulate bound metal complexing capacity and stability are also evaluated.
9201-070. Panda RB, Sahu BK, Sinha BK, Nayak A, (PG Dept Chem, Sambalpur Univ, Sambalpur 768019). Charactensation of Brahmani river water. Indian J Environ Hlth, 33 (2) (1991) 252-256 [2 Ref].
Present investigation deals with analysis of organic compounds in Brahmani river near Rourkela industrial complex and quality of drinking water Presence of acidic compounds like benzoic acid, toluic acid, napthoic acids, phenols and aresols are reported near Deogaon site. Whereas upstream samples did not show such impurities. Presence of nitrogenous organic compounds has been detected in all sites during all seasons. Method to purify these impurities is suggested.
9201-071. Paul AC, Pillai KC (Hlth Phys Div, Bhabha Atom Res Cent 400085). Natural radionuclides in a tropical river subjected to pollution. Water Air Soil Polln, 55 (3/4) (1991), 305-319 [12 Ref].
The radionuclide concentrations in Periyar river at the industrial zone showed significant reduction, by factors ranging form 3 to 5 during the post1980 period as compared to pre1980 due to better effluent treatment practices adopted by industrial units situated on the river bank. The studies revealed that nearly 90% of Po-210 in the river environment was unsupported, showing atmospheric pathway of deposition by decay of Rn-222.
9201-072. Prasad Suresh, Ruganwar DC (Water Polln Lab, Dept Appl Chem, Inst Techno, Banaras Hindu Univ, Varanasi). Separation of selected heavy metals from bank sediments of river Ganga by solvent extraction. Polln Res, 9 (1990), 15-21 [16 Ref] (Late Recd).
An indigenous solvent tri-isomyl phosphate (TAP) prepared from a byproduct? fusel oil of the Indian alcohol industry has been used for the extraction and separation of Copper (II), Iron (III) and partial extraction and separation of Chromium (III), Manganese (II), Nickel (II), Zinc (II), Lead (II) and Cadmium (II) from its acidic sediments solution in presence of chelating agent salicylic acid. The parameters that affect the extraction and separation of Cu (II) and Fe (III) such as metal concentration, pH variations, TAP percentage and salicylic acid concentration have been studied in detail. Metals concentrations were determined by Atomic Absorption Spectrophotometer.
9201-073. Ram Anirudh, Kadam AN (Regl Cent, Natl Inst Oceanogr, Sea Shell, 7Bunglows, Versova, Bombay). Petroleum hydroa carbon concentration in surface sediments in continental shelf region along the central west coast of India. Asian Env, 13 (3) (1991), 37 [19 Ref].
Levels of petroleum hydrocarbons in surface sediments at twenty locations from continental shelf along the central west coast of India varied in 0.010.2011g. g l(wet wt., chrysene equivalents). Inspite of heavy inputs through domestic and industrial wastewater, marine operations and atmospheric fallout; no serious buildup of petroleum hydrocarbons was observed in the sediments.
9201-074. Ramasubramanian R, Valsaraj CP, Rao VNR (Cent Adv Std Bot, Univ Madras, Guindy Campus, Madras 600025). Sewage pollution in the coastal waters of Madras, east coast of India. Indian J Marine Sci, 20 (4) (1991), 259-262 [20 Ref].
The extent of pollution over the coastal waters of Madras due to sewage inflow through the river Cooum was studied. Analyses were carried out at both low and high tides. Monitoring of estuarine and seawater opposite the mouth of the river at short intervals indicated a recovery in water quality with time from low to high tide and the effect appeared to be localized.
9201-075. Ramaswami V, Rajaguru P (Natl Environ Engng Res Inst, Nagpur 440020). Ground water quality of Tiruppur. Indian J Environ Hlth, 33(2) (1991), 187-191 [6 Ref].
Water samples from dug and tube wells near the Noiyyal river in Tiruppur Municipal area were analysed for the assessment of chemical quality with reference to Indian Standards for drinking water. It was observed that values of several parameters exceeded the permissible limits pointing out to the necessity of proper treatment, disposal and management of wastes discharged into the river and on open land.
9201-076. Saxena A, Sharma S, Kulshrestha UC, Srivastava SS (Dept Chem, Fac Sci, Dayalbagh Educational Inst, Dayalbgah, Agra 282005). Factors affecting alkaline nature of rain water in Agra (India). Enuiron Polln, 74 (2) (1991) 129-138 [17 Ref].
Rain water was collected and analysed from a reference site, Dayalbagh and Taj Ganj, near the Taj Mahal in Agra. The ionic components Ca, Mg, Na, K, NH4, Pb, Fe, Zn, SO4, NO3, HCO3, Cl and F were analysed along with pH, alkalinity and conductance. The average pH of rain water of both sites is 7.05. There is a dominance of alkaline components, particularly Ca.
9201-077. Shrivastava VS, Bhadana KU, Deshpande PP (GT Patil Coll, Organo Environ Lab, Dept Chem, Nandurbar 425412). A case study of tribal town, Nandurbar. Indian J Environ Prot, 11 (5) (1991), 337-340 [15 Ref].
Soil and water samples have been collected from the Nandurbar town area and their physicochemical characteristics have been studied. The soil samples were predominantly of non-calcic brown type and sandy in texture. These studies aim at the assessment of the extent of pollution by water extractable solids (WES), TDS, alkalinity, chlorides, sulphates, hardness and some metal ions in different soil and water samples. In addition to above, the amount of organic matter (OM), total organic carbon (TOC), and chemical oxygen demand (COD) in soil and water samples of the area have also been determine.
9201-078. Singh JP, Yadav PK, Singh Sakun, Prasad SC (Motilal Nehru Regl Engng Coll, Dept Civil Engng, Allahabad211004). BOD contamination in Kali river at Sadhu Ashram in Aligarh. Indian J Environ Prot, 11(5) (1991), 325-326 [5 Ref].
BOD contamination in Kali river due to discharge of sewage from Bulandsahar city and effluents of industries of Meerut and Muzaffarnagar cities has become a serious problem of water pollution. The high concentration of BOD and lower DO in Kali river is posing the main problem for survival of aquatic life. A study has been undertaken for 3 seasons in a year with respect to colour, pH, turbidity, DO and BOD of the river and it was found that BOD is quite high in the river and presence of low DO forced the aquatic lives to go away. Turbidity is much more than the permissible limit. The pH is also making the water unusable for various uses.
9201-079. Singh P, Roy SP (PG Dept Zoo, Bhagalpur Univ, Bhagalpur 812007). Seasonal variations in the macrophytic biomass production and its effects on the water chemistry of Kawar lake, Begusarai, Bihar. Env Eco, 9 (1) (1991), 72-76 [11 Ref] (Late Recd).
This study was made on the macrophytic biomass production of Kawar lake during the period January 1988 to December 1989 in relation to its effects on the water chemistry. This maximum biomass of submerged macrophytic community was recorded in April and minimum in September. The emergent macrophytic biomass was observed higher in September and the minimum biomass was recorded. January.
9201-080. Subrahmanyam MNV (Dept Zoo, Andhra Univ, Waltair Alisakhapatnam 530003). Pollution and water quality in Visakhapatnam harbour. J Environ Bio, 12 (4) (1991), 363-375 [29 Ref].
The waters of Visakhapatnam harbour were found to be highly turbid with an-euphotic zone of 0.80 to 2.63 m depth. The BOD and dissolved oxygen contents varied in different stations. Extremely high levels of nitrate, phosphate and silicate ranging from 1.37 to 4.61 mg/1 were observed in Station I and the concentration of nutrients decreased gradually from Station II to Station VI. The low nutrient levels observed in Station VI were 2 to 16 times greater than the clear open waters of Visakhapatnam and the concentrations of trace metals in the harbour were higher than those of coastal waters. These hydrographical characteristics indicate that the degree of pollution from sewage and industrial wastes and the eutrophic conditions of water vary from Stations I to VI in the harbour.
9201-081. Sudhakar G, Jyothi B, Venkateshwarlu V (Phyco River Eco Lab, Dept Bot, Osmania Univ, Hyderabad 7). Metal pollution and its impact on algae in flowing waters in India. Arch Environ Contam Toxico, 21 (4) (1991), 556-566 [31 Ref].
Metal pollution in the river Godavari in India, due to discharges of liquid wastes from a paper mill, has been studied for a period of two years. At the discharge point and 1 km from the point of discharge, iron, manganese, and zinc were recorded in high concentrations, whereas cadmium and chromium were observed in low concentrations. No metal was in detectable concentration in water before the river receives the effluents.
9201-082. Tiwari Navin Chandra, Sagar Gyan, Tiwari Dinesh, Singh HR (Polln Monit Lab, 15th Div, UP Jal Nigam, Gopeshwar 246401). Monitoring the water pollution in snow fed river Alaknanda at Rudraprayag, Chamoli. Env Eco, 9 (1) (1991), 202-206 [17 Ref] (Late Recd).
Physicochemical and biological parameters of the river Alaknanda were monitored. The quality of water was assessed by comparing with the existing standards for important parameters. The dissolved oxygen exhibited positive relationship with the temperature. The turbidity, total alkalinity, hardness, free carbondioxide, chloride concentration total dissolved solids, zooplankton and phytoplankton showed marked variation during monsoon and winter seasons.
9201-083. Tripathi BD, Sikander M, Shukla Suresh C (Cent Adv Std Bot, Banaras Hindu Univ, Varanasi 221005). Physico chemical characterization of city sewage discharge into river Ganga at Varanasi, India. Env Int, 17 (5) (1991), 469-478 [28 Ref].
The Varanasi city sewage discharged into the river Ganga at six sites, was analysed for its physicochemical properties. An analysis of variance reveals significant variation in most of the parameters with respect to months as well as sites. Furthermore, at Rajghat, sewage was most concentrated with the highest pollution load, whereas sewage at Assi ghat was the least concentrated. The correlation among various parameters is reported.
9201-084. Wadhawan AK, Kumar Devendra, Chacharkar MP Soni NK (Raksha Prayogshala, Jodhpur 342001). Trace and toxic metal ions in drinking water of Jodhpur. Indian J Environ Prot, 11 (7) (1991), 517-524 [6 Ref].
Water samples collected from various sources used in drinking water supply, were analysed for trace and toxic heavy metals, like Fe, Mn, Cu, Zn, Cr, Pb, Cd, etc., by Atomic Absorption Spectrophotometery. In all the samples, except collected from the hand pumps in Chopasni area of Jodhpur, concentration of Zn was found to be much less than the maximum desirable limit (5 ppm) as laid down by WHO. 30% of the samples collected from hand pumps were found to have more lead and 15% of the samples had more cadmium as compared to WHO/ICMR recommended safe limits.