Research on determination of chemical purity of andrographolide by coulometric titration method / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 1014-1017, 2010.
Artigo
em Chinês
| WPRIM
| ID: wpr-285413
ABSTRACT
The determination of chemical purity of andrographolide by coulometric titration method is studied in this paper. The coulometric titration was carried out in a mixture composed of 4 mol x L(-1) hydrochloric acid and 1 mol x L(-1) potassium bromide solution and 1 mol x L(-1) potassium nitrate solution (11). Bromine is electrogenerated at the anode and reacts with the andrographolide. The number of electrons involved in the eleatrode reaction is 2. Purity of andrographolide is 99.76% compared with 99.77% utilizing area normalization method by HPLC. The RSD are 0.33% and 0.02% respectively. The results from two methods are consistent, so the determination of chemical purity of andrographolide by coulometric titration method is scientific and feasible. The method is rapid, simple, convenient, sensitive and accurate. The reference material is not essential in the method. The method is suitable for determination of chemical purity of andrographolide.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Modelos Lineares
/
Química
/
Reprodutibilidade dos Testes
/
Cromatografia Líquida de Alta Pressão
/
Diterpenos
/
Eletrólise
/
Eletrólitos
/
Indicadores e Reagentes
Tipo de estudo:
Estudo prognóstico
Idioma:
Chinês
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2010
Tipo de documento:
Artigo
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