The distinguishing reaction of nitrate and nitrite in Dantong Tablets
- VernacularTitle:胆通片中硝酸盐与亚硝酸盐鉴别反应的研究
- Author:
Yibin CHEN
;
Jaxi CHEN
;
Yu FENG
;
Minggeng WANG
- Publication Type:Journal Article
- Keywords:
nitrate;
nitrite;
distinguishing reaction
- From:
Chinese Traditional Patent Medicine
1992;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
AIM: We establish a suitable distinguishing reaction of nitrate and nitrite in Chinese traditional medicine containing reduction agents. METHODS: In different concentration solution of sulfate acid,we study on the distinguishing reaction,by paralleling samples with negative samples and positive samples. RESULTS:The nitrite and sample containing nitrite react with ferrous sulfate reagent from brown in 50%-5% solution of sulfate acid;The nitrate and sample containing nitrate react with ferrous sulfate reagent from brown in ≥25% solution of sulfate acid.The negative sample and sample without nitrite and nitrate does not react with ferrous sulfate reagent in 50%-5% solution of sulfate acid. CONCLUSION: The thin sulfate acid-ferrous sulfate reagent-nitrate ditinguishing reaction can be used to distinguish nitrate and nitrite in Chinese traditional medicine containing reduction agents.
