原文由 水星(woshibengburen) 发表:原文由 haypiny(haypiny) 发表:
Automated Hydrazine Reduction Method: Nitrate is reduced to nitrite by hydrazine sulfate. The nitrite concentrations is determined by diazotizing with sulfanilamide and coupling with NED dihydrochloride to form a colored azo dye that is measured colorimetrically.
用百度来翻译了一下,不知道对不对:
自动水合肼还原的方法:硝酸盐还原成亚硝酸盐,硫酸肼。亚硝酸盐的浓度被确定由重氮化与NED二盐酸盐与对氨基苯磺酰胺和耦合,形成了着色的偶氮染料,测量色度。
你这种办法就是先测定一次亚硝,还原后再测一次,俩次的差值就是硝酸?
原文由 haypiny(haypiny) 发表:原文由 水星(woshibengburen) 发表:原文由 haypiny(haypiny) 发表:
Automated Hydrazine Reduction Method: Nitrate is reduced to nitrite by hydrazine sulfate. The nitrite concentrations is determined by diazotizing with sulfanilamide and coupling with NED dihydrochloride to form a colored azo dye that is measured colorimetrically.
用百度来翻译了一下,不知道对不对:
自动水合肼还原的方法:硝酸盐还原成亚硝酸盐,硫酸肼。亚硝酸盐的浓度被确定由重氮化与NED二盐酸盐与对氨基苯磺酰胺和耦合,形成了着色的偶氮染料,测量色度。
你这种办法就是先测定一次亚硝,还原后再测一次,俩次的差值就是硝酸?
对的,有相关的文献,主题是测总氮,还有氨氮等也会被先氧化,再还原到亚硝氮 ,生成红色的溶液进行测定。