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Citation: ZHANG Juzhou, JI Shuilin, CAI Huimei, LI Jing, WANG Yongxin, WANG Jingqiu. Simultaneous determination of six fluorescent whitening agents in plastic and paper packaging materials by high performance liquid chromatography[J]. Chinese Journal of Chromatography, ;2017, 35(11): 1198-1203. doi: 10.3724/SP.J.1123.2017.06024 shu

Simultaneous determination of six fluorescent whitening agents in plastic and paper packaging materials by high performance liquid chromatography

ZHANG Juzhou ^1, ,
JI Shuilin ^2,3 ,
CAI Huimei ^2,3 ,
LI Jing ¹ ,
WANG Yongxin ¹ ,
WANG Jingqiu ¹

1.
Anhui Provincial Institute for Food and Drug Test, Hefei 230051, China;
2.
School of Tea & Food Science and Technology, Anhui Agricultural University, Hefei 230036, China;
3.
State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei 230036, China

Received Date: 23 June 2017

Fund Project: Natural Science Foundation of Anhui Province (No. 1408085MKL38)

A novel analytical method was developed for the simultaneous determination of six fluorescent whitening agents (FWAs:FWA 135, FWA 184, FWA 185, FWA 199, FWA 378 and FWA 393) in paper and plastic food packaging materials by high performance liquid chromatography with fluorescence detection (HPLC-FLD). The sample was extracted with mixed solution of chloroform and acetonitrile (3:7, v/v), then cleaned up by HLB solid phase extraction column. Qualitative and quantitative analyses were carried out by HPLC. The sample was separated on a Phenomenex C18 column using acetonitrile and 5 mmol/L ammonium acetate aqueous solution as mobile phases. The results indicated that the linear range of FWA393 was 15-1500 μg/L and the linear ranges of the other five FWAs were 5-500 μg/L with correlation coefficients greater than 0.999. The recoveries in spiked samples were between 80.4% and 125.0% with RSDs (n=6) of 1%-13%. Furthermore, this method was applied to analyze 12 samples in the market to verify the practicality of the method. The method showed the advantages of simplicity, high recovery and good precision, and is suitable for the detection of the six fluorescent whitening agents in food packaging materials.
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