PHOTOBLEACHING OF METHYLENE-BLUE IN CONTINUOUS-WAVE THERMAL LENS SPECTROMETRY

被引：14

作者：

LOWE, RD ^{[1
]}

SNOOK, RD ^{[1
]}

机构：

[1] UMIST, DEPT INSTRUMENTAT & ANALYT SCI, POB 88, MANCHESTER M60 1QD, ENGLAND

来源：

ANALYST | 1993年 / 118卷 / 06期

关键词：

CONTINUOUS WAVE THERMAL LENS SPECTROMETRY; PHOTOBLEACHING; METHYLENE BLUE; FLOW INJECTION;

D O I：

10.1039/an9931800613

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this study continuous wave thermal lens spectrometric measurements are made using solutions of Methylene Blue in short pathlength sample cells (0.1 cm). Under the conditions described, rapid photobleaching of Methylene Blue is observed, which degrades the thermal lens signal with potentially serious consequences in terms of detection limits. The phenomenon has been studied and an empirical relationship developed to describe the behaviour of the thermal lens signal when photobleaching occurs.

引用

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页码：613 / 616

页数：4

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