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Extractive-Spectrophotometric Determination of Furosemide with Sodium 1,2-Naphthoquinone-4-Sulphonate in Pharmaceutical Formulations.

 

作者: Adela Sevillano-Cabeza,   Pilar Campíns-Falcó,   M.Carmen Serrador-García,  

 

期刊: Analytical Letters  （Taylor Available online 1997）
卷期: Volume 30, issue 1  

页码: 91-107

 

ISSN:0003-2719

 

年代: 1997

 

DOI:10.1080/00032719708002293

 

出版商: Taylor & Francis Group

 

关键词: Extractive-spectrophotometry;sodium 1,2-naphthoquinone-4-sulphonate (NQS);furosemide;isoamyl alcohol;pharmaceutical samples.

 

数据来源: Taylor

 

摘要:

An extractive-spectrophotometric study based on the reaction of furosemide with 1,2-naphthoquinone-4-sulphonate (NQS) is described. Optimal conditions are: NaH2PO4-Na2HPO4pH 7.5, NQS 7.7×10−3M, heating 30 min at 70° C and isoamyl alcohol as extractant. The method is used to determine furosemide in pharmaceutical samples. The interference caused by lactose can be eliminated using pH 4.5. The method can be also used to determine lactose at pHs 4.5 and 7.5.

 

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