17432573

Source:http://linkedlifedata.com/resource/pubmed/id/17432573

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0024868, umls-concept:C0026131, umls-concept:C0178791, umls-concept:C0680730, umls-concept:C1148554, umls-concept:C1709915
pubmed:issue	1
pubmed:dateCreated	2007-4-16
pubmed:abstractText	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.
pubmed:language	chi
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/9424804
pubmed:status	PubMed-not-MEDLINE
pubmed:month	Jan
pubmed:issn	1000-8713
pubmed:author	pubmed-author:DengXiaojunX, pubmed-author:GuoDehuaD, pubmed-author:HanJ-HJH, pubmed-author:LunaC MCM, pubmed-author:ZhuJianJ
pubmed:issnType	Print
pubmed:volume	25
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	39-42
pubmed:year	2007
pubmed:articleTitle	[Determination of isopropylthioxanthone residue in milk migrated from packaging materials by gas chromatography-mass spectrometry].
pubmed:affiliation	Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, China. dengxj@shciq.gov.cn
pubmed:publicationType	Journal Article, English Abstract