Am doing research on water quality of Reservoir. How should I take samples from the Reservoir for laboratory analysis?
My advice is to determine the largest number of physical chemical parameters in situ example (O2, DBO, DQO, pH, temperature, etc ...) with a multiparameter. Other analyzes that are carried out in the laboratory, such as bacteriological ones, take the samples in sterile knobs, transport under refrigeration and in the shortest possible time.
In the end, you should compare your results with a standard in force in your country where the permissible limits are established for each parameter and then interpret what could be the cause if you have not identified it, that is responsible for the poor quality of the water in the site sampled . Remember to see the relationship between all the parameters when one is affected modifies the others. It is also important to make a small characterization of the place where you are going to drink the water, it could help you to interpret the results. Example Depth, aquatic vegetation if abundant, fauna bioindicator of the environment, date of taking the water samples, dry period or Rain when you took the samples, the more variables you have, the better.
Dear Nega,
Please see the given below link.
https://www.who.int/water_sanitation_health/dwq/2edvol3d.pdf
Regards
Krishna
Get various bottles for collection of samples at various points depending on your research and carry out physicochemical tests to obtain water quality and compare with standards such as WHO, NESREA, APHA, USEPA.
At the various sampling sites, the containers must be rinsed several times with deionized water before the samples were collected at the various points. The pH can be determined at the point of sampling using pH meter (model Jenway 3310). The pH electrode must be calibrated using buffers of pH 4.0, 7.0 and 10.0.. Temperature can also be determined using a thermometer, while conductivity was determined using a conductivity meter (Hach model C0150). Partition gravimetric method can be used for the analysis of oil and grease.
Check more literatures on water quality tests
I hope this is useful
Useful Links: http://www1.agric.gov.ab.ca/$department/deptdocs.nsf/all/wqe11072
https://www.who.int/water_sanitation_health/dwq/2edvol3d.pdf
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