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| Determination of 8 Phthalate Esters in Liquid Cosmetics Using Solid-phase Microextraction/Gas Chromatography-Mass Spectrometry |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:Solid-phase microextraction gas chromatography-mass spectrometry liquid cosmetics phthalic acid esters plasticizer |
| Author | Institution |
| 张璇，陈大舟，汤桦，冯洁，庄惠明，李蕾 |
1.北京化工大学理学院化学系; 2.中国计量科学研究院化学计量与分析科学研究所;3.云南省计量测试技术研究院 |
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| Abstract: |
| A method based on solid-phase microextraction（SPME） technique followed by gas chromatography with mass spectrometry detector（GC-MS） was developed for the determination of 8 phthalic acid esters（PAEs） in liquid cosmetics.The parameters affecting the partitions of analytes such as fiber coating,extraction temperature,stirring speed and salt concentration were optimized.The final SPME method employed a 65 μm polydimethylsiloxane（PDMS）/divinylbenzene（DVB） coating fiber and the saturated sodium chloride solution at 90 ℃ under stir for 60 min，then the fiber was introduced into the GC injector port and the extract was desorbed at 250 ℃ for 4 min.The detection limits for the other 7 PAEs except for DPhP ranged from 0.7 μg?kg-1 to 13.6 μg?kg-1，and the recoveries for spiked samples were between 83% and 97% with RSDs（n=5）of 2.5%-10.0% .For its weak adsorption to fiber coating，the detection limit for DPhP was 75 μg?kg-1 ，and the recovery was 70% with RSD（n=5） of 13.9%．The method was applied in the determination of 8 PAEs in liquid samples with satisfactory results. |
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