%0 Journal Article
%T Determination of Isopropylthioxanthone Residue in Milk Migrated from Packaging Materials by Gas Chromatography-Mass Spectrometry<br>气相色谱-质谱法测定乳制品中光引发剂异丙基硫杂蒽酮的残留量
%A DENG Xiaojun
%A GUO Dehua
%A LI Bo
%A ZHU Jian
%A YIN Ping
%A <br>邓晓军
%A 郭德华
%A 李波
%A 朱坚
%A 殷平
%J 色谱
%D 2007
%I 
%X Isopropylthioxanthone (ITX) has been widely used as the photoinitiator in printing ink of packaging materials in modern food packaging industry. A method regarding the identification and qualification of ITX residue in milk migrated from food contact packaging materials was developed. The procedure was based on the gas chromatography-mass spectrometry (GC-MS) for screening and gas chromatography-tandem mass spectrometry (GC-MS/MS) for confirmation after a solid phase extraction (SPE) step using Florisil column with anthracene D10 (AD10) as the internal standard. Data was acquired in selective ion monitoring (SIM) mode with the following ions: m/z 184, m/z 224, m/z 239, m/z 254 for ITX and m/z 80, m/z 94, m/z 188, m/z 160 for AD10 in screening method of GC-MS. The m/z 254 was selected as the parent ion and m/z 239 as the daughter ion in the conformation method of GC-MS/MS. Data acquired employed the transition of m/z 254, m/z 239 for ITX and m/z 188, m/z 160 for AD10. The method gave limits of quantification (LOQ) of 7.0 microg/L (GC-MS) and 5.0 microg/L (GC-MS/MS) respectively as well as recoveries ranged from 74.9% to 89.6%. The analysis of real samples found two positives out of 11 different milk stuffs available using this method.
%K gas chromatography(GC)
%K mass spectrometry(MS)
%K photoinitiator
%K isopropylthioxanthone
%K packaging material<br>气相色谱
%K 质谱
%K 光引发剂
%K 异丙基硫杂蒽酮
%K 包装材料
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=4D81E042D77AFEC6881D14759692069C&aid=62020E45E610CF00&yid=A732AF04DDA03BB3&vid=C5154311167311FE&iid=CA4FD0336C81A37A&sid=7C3A4C1EE6A45749&eid=ECE8E54D6034F642&journal_id=1000-8713&journal_name=色谱&referenced_num=0&reference_num=7