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Chapters Chemical Analysis
The Biology of Polluted Rivers
2 other sections not shown
100 ml distilled acid solution activated sludge add 1 ml algae alkaline ammonia ammonium animals aquatic bacteria beaker Biochemical Oxygen Demand biological Biology of Polluted bottles bulb when pipetting carbon tetrachloride chemical chloride chloroform chromium cm cell colorimeter or spectrophotometer colorimetrically compounds cool cyanide detergents detritus diluted to 50 dilution water dissolved oxygen dithizone downstream effluent flask g potassium hydroxide Ilford indicator industrial iodine larvae litre litre with distilled macrophytes methods micro.organisms ml conc ml distilled water ml of sample ml with distilled Nessler tubes Nitrate nitrogen nitrogen nm Ilford filter organic matter oxidation oxidised phenol phosphates phosphorus Plate poisonous polyphosphates Procedure protozoa Reagents river community river pollution river water safety bulb separating funnel sewage effluent sewage fungus sewage treatment sodium azide sodium hydroxide species spectrophotometer stock solution suitable standards sulphate sulphide sulphuric acid suspended solids tanks thiosulphate volume of sample waste water and dilute wavelength