Application of the effects of solvent and dissolved oxygen on the determination of benzo[a]pyrene by constant-wavelength synchronous spectrofluorimetry in smoke-flavouring

被引：15

作者：

Falcón, MSG ^{[1
]}

Amigo, SG ^{[1
]}

Yusty, MAL ^{[1
]}

Lage, BL ^{[1
]}

Lozano, JS ^{[1
]}

机构：

[1] Univ Santiago de Compostela, Fac Pharm, Area Nutr & Bromatol, Dept Analyt Chem Nutr & Bromatol, Santiago De Compostela 15706, Spain

来源：

TALANTA | 1999年 / 48卷 / 02期

关键词：

spectrofluorimetry; benzo[a]pyrene; dissolved oxygen; smoke-flavour agents;

D O I：

10.1016/S0039-9140(98)00261-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

This work studies the effects of solvent and of dissolved oxygen in the determination of benzo[a]pyrene (BaP) by constant-wavelength synchronous spectrofluorimetry in smoke-flavour agents, as confirmation and quantification techniques. The wavelength of the most intense peak at the optimum excitation-emission wavelength interval (20 or 110 nm in most of nine solvents) varied by up to 5 nm, and the detection and quantification limits by a factor of up to 30. The best quantification limit was obtained with DMSO (0.09 mu g l(-1)). The deoxygenation of the analyte solution decreased detection and quantification limits, by a variable factor (8-1.13 in the case of n-hexane and DMSO, respectively). (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：377 / 384

页数：8

共 25 条

[1] POLYCYCLIC AROMATIC-HYDROCARBONS AND POLYCYCLIC AROMATIC SULFUR HETEROCYCLES - EXAMINATION OF MOLECULAR-STRUCTURE FLUORESCENCE PROBE CHARACTER CORRELATIONS [J].