The colour can be an index to determine the pollution of surface water. How can we determine the chemical pollution of the riverwater/surface water?
River water pollution is determined by examining this water and whether compatible with international limitations. Each group of pollutants has special devices for examination, for example, heavy metals by atomic absorption spectroscopy (ASS), organics by GC or HPLC or UV and so on
Sudip, the color of a water body can be used as an index to determine the pollution of surface water due to the fact that, color in water is influenced by the presence of suspended solids or dissolved solids in the water column. Since color depends on the dissolved solids which is the total amount of solids (including chemical elements in water), it pre-suposses that, the higher the color of a water body the more polluted the water may be. This may also influence the water turbidity, secchi depth or water transparency and as well as the algal biomass which predicts its trophic index. Now, several methods exists for determining the the chemical pollution of surface waters depending on the intended use of the surface water. For instance, the water quality index is used to determine the pollution status of surface waters using Weighted water Quality Index (WQI) as proposed by Soloway Rive Purification Board in 1978. For the protection of aquatic life, CCME WQI which is a science-based communication tool that tests multi-variable water quality data against specified water quality benchmarks determined by the user. You could refer to these and others for your surface water studies.
Dr. Collins Tay I do completely agree with you. The parameters like colour, pH, TDS and SS are easier, cheaper techniques I think.
Dr. Collins Tay your contributions are invaluable for all of us. I express my sincere, heartfelt thanks to you.
Sincerely,
Sudip
Dr. Usman Atique I do agree with you, colour is only one component, for details and reliable assessments, you would need to perform a comprehensive assessment of all the possible water quality parameters and then integrate them into an index such as WQI, WPI, etc. With best wishes,
Sudip Saha
https://www.mdpi.com/journal/water Water 2018, 10, 183; doi:10.3390/w10020183
https://www.sciencedirect.com/topics/earth-and-planetary-sciences/surface-water-pollution
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The level of pollution in a waterbody can be determined byanalysing the concentration level of heavy metals , nutrients leveks such as Nitrates etc
The chemical pollution of any river is determimed by the type of source i.e. point and non point source. when we know the pollution source than we can be find out the type of chemical pollution discharge in the river.
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