Determination of Lipid-Soluble and Water-Soluble Fluorescent Whitening Agents in Food Contact Materials by High Performance Liquid Chromatography with Fluorescence Detector

doi:10.7506/spkx1002-6630-201524051

Abstract

Abstract:

A method was developed for simultaneous determination of six lipid-soluble fluorescent whitening agents
(FWA367, FWA393, FWA368, FWA140, FWA135, and FWA184) and two water-soluble fluorescent whitening agents
(FWA49 and FWA220) by high performance liquid chromatography with fluorescence detector (HPLC-FLD). The
samples were extracted by a simple ultrasonic extraction procedure and then separated on a reversed-phase C18 column
with acetonitrile and water as the mobile phases in gradient elution mode. The target compounds were detected by
fluorescence detector. Under optimized test conditions, the linear ranges of the method for FWA367, FWA393, FWA368,
FWA140, FWA135 and FWA184 were 1–200 μg/L, and those for FWA49 and FWA220 were 10–2 000 μg/L and 50–
2 000 μg/L, respectively. The correlation coefficients for all 8 target compounds were higher than 0.998 2. The spiked
recoveries were between 87.8% and 99.7% with relative standard deviations (RSDs, n = 6) of 2.1%–6.4%. This method is
simple and practical, and can be used for simultaneous determination of six lipid-soluble fluorescent whitening agents and
two water-soluble fluorescent whitening agents in food contact materials.

Key words: high performance liquid chromatography (HPLC), fluorescence detection (FLD), fluorescent whitening agents (FWAs), food contact materials

CLC Number:

TS207.3

LIU Jie, ZHENG Junying, PENG Qingzhi, ZHANG Li, WEN Hong, ZHOU Taohong, ZHU Xiaoling. Determination of Lipid-Soluble and Water-Soluble Fluorescent Whitening Agents in Food Contact Materials by High Performance Liquid Chromatography with Fluorescence Detector[J]. FOOD SCIENCE, doi: 10.7506/spkx1002-6630-201524051.

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Determination of Lipid-Soluble and Water-Soluble Fluorescent Whitening Agents in Food Contact Materials by High Performance Liquid Chromatography with Fluorescence Detector

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