Hello,
Looking for ideas what can cause high COD in wastewater after flue gas desulphurisation (FGD)? We suspect the presence of N-S compounds?
I will be grateful for information and publications.
If hydroxylamine is detected then you are right. Also watch out for the presence of nitrosating agents, which lead to formation of nitrosamines and nitramines. They are carcinogenic pollutant.
Dear Peter,
Thank you for your response. Could you indicate the method of rapid analysis of hydroxylamine and nitrosamines in wastewater? I was thinking about IC, however It is hard to find a laboratory willing to analyze this type of compounds (new calibration, etc).
many thanks in advance
You can go thru the articles titled " Quantification of Total N -Nitrosamine Concentrations in Aqueous Samples via UV-Photolysis and Chemiluminescence Detection of Nitric Oxide", "Identification of nitrosamine precursors from urban drainage during storm events: A case study in southern China", "Analysis of N-nitrosamines and other nitro(so) compounds in water by high-performance liquid chromatography with post-column UV
photolysis/Griess reaction" and "Measurement of Nitrosamine and Nitramine Formation from NOx Reactions with Amines during Amine-Based Carbon Dioxide Capture for Postcombustion Carbon Sequestration".
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