Catalytic determination of dissolved inorganic carbon in natural waters by flow injection spectrophotometry

被引：6

作者：

Maniasso, N ^{[1
]}

Sato, S ^{[1
]}

Gine, MF ^{[1
]}

Jacintho, AO ^{[1
]}

机构：

[1] UNIV SAO PAULO,CTR ENERGIA NUCL & AGR,BR-13400970 PIRACICABA,SP,BRAZIL

来源：

ANALYST | 1996年 / 121卷 / 11期

关键词：

catalytic analysis; dissolved inorganic carbon; flow injection; water analysis; spectrophotometry;

D O I：

10.1039/an9962101617

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A flow injection procedure for the spectrophotometric determination of inorganic dissolved carbon in natural waters is described. The method is based on the ability of the hydrogencarbonate anion to catalyse the slow reaction of EDTA with Cr-III ions of an aged aqueous solution, The proposed system handles up to 36 samples per hour with hydrogencarbonate contents ranging from 10 to 300 mg l(-1), with RSDs better than 1%, The results for waters agree well with those obtained by titration.

引用

页码：1617 / 1619

页数：3

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