PYROLYSIS FLOW-INJECTION ANALYSIS SPECTROPHOTOMETRIC DETERMINATION OF AMINO-ACIDS IN AQUEOUS-SOLUTIONS

被引：6

作者：

BURGUERA, JL ^{[1
]}

BURGUERA, M ^{[1
]}

DELAGUARDIA, M ^{[1
]}

SALVADOR, A ^{[1
]}

机构：

[1] UNIV VALENCIA,DEPT ANALYT CHEM,E-46100 VALENCIA,SPAIN

来源：

ANALYTICA CHIMICA ACTA | 1992年 / 261卷 / 1-2期

关键词：

FLOW SYSTEM; SPECTROPHOTOMETRY; AMINO ACIDS; PYROLYSIS;

D O I：

10.1016/0003-2670(92)80171-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A method is described for the determination of proline, cysteine, alanine and tyrosine in aqueous mixtures based on their pyrolitic conversion to nitrogen-containing compounds. These compounds undergo through peroxodisulphate digestion with a heated capillary tube containing a platinum Wire in a closed flow system. Subsequent mixing of aliquots of the digest and a Malachite Green chromogenic reagent solution in a symmetrical system allowed the spectrophotometric determination of nitrate at 650 nm. The method is reproducible and accurate.

引用

页码：23 / 27

页数：5

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