COD測定条件の研究(第1報)し尿処理場排水のCODに対する亜硝酸共存による影響

抄録

The effects of nitrate, ammonium and nitrite ions on the COD values of glycine, caffeine, L-tryptophane, L-proline, methylamines, aniline, N-methylanilines, and urea were investigated. The COD values of these compounds were little influenced by nitrate ion, and, those of L-tryptophane, L-proline and anilines were increased by ammonium ion. On the other hand, in the copresence of nitrite ion the COD value of urea decreased and those of L-proline and methylamines graatly increased. These phenomena may suggest that nitrite rapidly reacts with the compounds to produce some other derivatives on the way of COD measurement.