N
nidhir
Dear all,
We currently use APHA method to determine COD in waste water. However, in the sample preservation method, there is a requirement to bring the ph < 2by acidification with sulphuric acid.
Our concern with this issue is that :
1. The industrial effluent may contain leachate which reacts with the acid and is dangerous for the sampler.
2. The effluent is at aroud 40 degress Celcius during sampling, hence adition of acid causes a very exothermic reaction, once again dangerous for the sampler and may be affecting other parameters to be tested.
Could someone help on these two issue.
Thanks
We currently use APHA method to determine COD in waste water. However, in the sample preservation method, there is a requirement to bring the ph < 2by acidification with sulphuric acid.
Our concern with this issue is that :
1. The industrial effluent may contain leachate which reacts with the acid and is dangerous for the sampler.
2. The effluent is at aroud 40 degress Celcius during sampling, hence adition of acid causes a very exothermic reaction, once again dangerous for the sampler and may be affecting other parameters to be tested.
Could someone help on these two issue.
Thanks