Citation: TANG Juan, DING Youchao, CAO Xizhong, QI Yan, QIAN Kai. Rapid detection of eight fluorescent whitening agents in textile by ultra performance convergence chromatography[J]. Chinese Journal of Chromatography, ;2014, 32(11): 1230-1235. doi: 10.3724/SP.J.1123.2014.07030 shu

Rapid detection of eight fluorescent whitening agents in textile by ultra performance convergence chromatography

1.
Inspection Center of Industry Products, Jiangsu Entry-Exit Inspection and Quarantine Bureau, Nanjing 210001, China

Corresponding author: DING Youchao,
Received Date: 18 July 2014
Available Online: 17 August 2014
Fund Project: 国家质检总局科技计划项目(2013IK108). (2013IK108)

An accurate quantitative and confirmative method has been developed for the determination of eight fluorescent whitening agents (FWAs) in textile by ultra performance convergence chromatography (UPC²) coupled with photo diode array (PDA) detection, including 1,2-bis(5-methyl-2-benzoxazole)ethylene (PF), 7-diethylamino-4-methylcoumarin (SWN), 2,2'-(2,5-thiophenediyl)bis(5-(1,1-dimethylethyl)-benzoxazol (OB), 2-[4-[2-[4-(2-benzoxazolyl) phenyl]ethenyl]phenyl]-5-methyl-benzoxazol (KSN), 1,4-bis(2-cyanostyryl)benzene (ER-Ⅰ), 1-(2-cyanostyryl)-4-(4-cyanostyryl)benzene (ER-Ⅱ), 2,2'-(1,4-naphthalenediyl)bis-benzoxazol (KCB), 4,4'-bis[2-(2-methoxyphenyl)ethenyl]-1,1'-biphenyl (FP). The sample was extracted with xylene and concentrated by a rotary evaporator, and then qualitatively and quantitatively analyzed by UPC². The separation of target compounds was achieved on an ACQUITY UPC² HSS C18 SB column (100 mm×3.0 mm, 1.8 μm) by a gradient elution with supercritical carbon dioxide and methanol as mobile phases. External standard method was used for the quantitative determination and the calibration curves showed good linearity in the concentration range of 1.0-20.0 mg/L for the eight target compounds with correlation coefficients not less than 0.9991. The limits of quantification of the eight compounds (LOQs, S/N=10) were 0.70-0.95 mg/L. The average recoveries of the eight compounds ranged from 90.9% to 96.5% at the spiked levels of 2.0, 5.0, 10.0 mg/kg with the relative standard deviations (RSDs) of 2.8%-4.2%. The method is simple, accurate and time-saving with high sensitivity, and can be used for the rapid determination of the eight FWAs in textile.
- ultra performance convergence chromatography (UPC²),
- fluorescent whitening agents (FWAs),
- textile
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沈阳化工大学材料科学与工程学院沈阳 110142