Spectrophotometric Determination of Bromate in Water Using Multisyringe Flow Injection Analysis

被引：16

作者：

Oliveira, Sara M. ^{[1
,2
]}

Segundo, Marcela A. ^{[1
]}

Rangel, Antonio O. S. S. ^{[2
]}

Lima, Jose L. F. C. ^{[1
]}

Cerda, Victor ^{[3
]}

机构：

[1] Univ Porto, Fac Farm, Dept Quim, REQUIMTE, P-4099030 Porto, Portugal

[2] Univ Catolica Portuguesa, CBQF Escola Super Biotecnol, Porto, Portugal

[3] Univ Balearic Isl, Dept Chem, Palma de Mallorca, Spain

来源：

ANALYTICAL LETTERS | 2011年 / 44卷 / 1-3期

关键词：

Bromate; Multisyringe flow injection analysis; Phenothiazines; Spectrophotometry; Water; ION-CHROMATOGRAPHIC METHOD; DRINKING WATERS; TRACE BROMATE; PHENOTHIAZINES; SEPARATION; BUFFER;

D O I：

10.1080/00032719.2010.500771

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A multisyringe flow injection system for the spectrophotometric determination of bromate in water is proposed, based on the oxidation of phenothiazine compounds by bromate in acidic medium. Several phenothiazines were tested, including chlorpromazine, trifluoperazine, and thioridazine. Higher sensitivity and lower LOD were attained for chlorpromazine. Interference from nitrite, hypochlorite, and chlorite was eliminated in-line, without any changes in the manifold. The automatic methodology using chlorpromazine allowed the determination of bromate between 25 and 750 mu gL-1, with LOD of 6 mu gL-1, good precision (RSD1.6%, n=10), and determination frequency of 35h-1.

引用

页码：284 / 297

页数：14

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