A sensitive fluorescence probe for DDT-type pesticides

被引：10

作者：

Hassoon, S ^{[1
]}

Schechter, I ^{[1
]}

机构：

[1] Technion Israel Inst Technol, Dept Chem, IL-32000 Haifa, Israel

来源：

ANALYTICA CHIMICA ACTA | 1998年 / 368卷 / 1-2期

关键词：

methoxychlor; DDT-type pesticides; Nile red; fluorescence;

D O I：

10.1016/S0003-2670(98)00166-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Nile red was examined as a possible fluorescence probe for DDT-type contaminations in aqueous solutions. The effects of such a pesticide (i.e. methoxychlor) on Nile red fluorescence properties was shown to be strong enough for analytical purposes. Several spectral effects were observed: these include a selective complexation reaction, resulting in a new fluorescence peak (at 605 nm) and a polarization enhancement of the original Nile red peak (at 663 nm). In addition, a linearly dependent blue-shift of the original Nile red fluorescence was obtained. The fluorescence enhancement and intensity of the new complex peak were linearly dependent on pesticide concentration in the mu g ml(-1) range. The probe showed a certain selectivity to DDT-type pesticides. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：77 / 82

页数：6

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