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The H-Point Standard Additions Method When the Matrix Effect is Absent. Application to the Determination of Certain Cephalosporins and their Acid-Induced Degradation Products

 

作者: Pilar Campíns-Falcó,   Luisa Gallo-Martínez,   Adela Sevillano-Cabeza,   Francisco Bosch-Reig,  

 

期刊: Analytical Letters  （Taylor Available online 1996）
卷期: Volume 29, issue 11  

页码: 2039-2054

 

ISSN:0003-2719

 

年代: 1996

 

DOI:10.1080/00032719608000810

 

出版商: Taylor & Francis Group

 

关键词: H-point standard additions method;bias error;spectrophotometry;intact and acid-degraded cephalosporins

 

数据来源: Taylor

 

摘要:

This paper discusses the requirements and scope of application of the H-point Standard Additions Method (HPSAM) when the matrix effect is absent. It is demonstrated that the HPSAM calibration method works well with slopes of calibration graphs as standards. It is applied to the resolution of binary mixtures of intact and acid degraded cephalosporins. The results obtained are better than those obtained by second derivative spectrophotometry.

 

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