PMID- 17432573
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20100610
LR  - 20161018
IS  - 1000-8713 (Print)
IS  - 1000-8713 (Linking)
VI  - 25
IP  - 1
DP  - 2007 Jan
TI  - [Determination of isopropylthioxanthone residue in milk migrated from packaging 
      materials by gas chromatography-mass spectrometry].
PG  - 39-42
AB  - 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.
FAU - Deng, Xiaojun
AU  - Deng X
AD  - Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai 200135, China. 
      dengxj@shciq.gov.cn
FAU - Guo, Dehua
AU  - Guo D
FAU - Li, Bo
AU  - Li B
FAU - Zhu, Jian
AU  - Zhu J
FAU - Yin, Ping
AU  - Yin P
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Se Pu
JT  - Se pu = Chinese journal of chromatography
JID - 9424804
EDAT- 2007/04/17 09:00
MHDA- 2007/04/17 09:01
CRDT- 2007/04/17 09:00
PHST- 2007/04/17 09:00 [pubmed]
PHST- 2007/04/17 09:01 [medline]
PHST- 2007/04/17 09:00 [entrez]
PST - ppublish
SO  - Se Pu. 2007 Jan;25(1):39-42.