Flow-injection spectrophotometric determination of chloramben

被引：0

作者：

Jan, M. Rasul ^{[1
]}

Shah, Jasmin ^{[1
]}

Bashir, Nadia ^{[1
]}

机构：

[1] Univ Peshawar, Inst Chem Sci, Peshawar 25120, Pakistan

来源：

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY | 2008年 / 88卷 / 01期

关键词：

chloramben; spectrophotometric; FIA; diazotization; acidic herbicide;

D O I：

10.1080/03067310701336353

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new protocol for the spectrophotometric determination of chloramben using online diazotization has been investigated. The diazotization reaction and coupling reaction were carried out online in flow assembly by injecting chloramben in a nitrite stream followed by coupling with beta-naphthol. The resulting azo dye was measured at 475 nm. The calibration plot is linear in the concentration range investigated, with a molar absorptivity of 2.64 x 10(4) L mol(-1) cm(-1) and sample throughput of 90 h(-1). The proposed method is simple, rapid, and sensitive. The LOD and LOQ were calculated and were found to be 0.01 and 0.04 mu g mL(-1), respectively, with an RSD value of 8.3.

引用

页码：27 / 35

页数：9

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