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| Determination of 54 Volatile Organic Pollutants in Infant Food by Headspace/Gas Chromatography－Mass Spectrometry |
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| DOI： |
| KeyWord:infant food volatile organic pollutants headspace/gas chromatography－mass spectrometry |
| Author | Institution |
| HOU Jing，XU Qing，MAO Yan-ni，WANG Shu，LIU Meng-ting，LU Yue-peng |
1. Wuhan Institute for Food and Cosmetic Control，Wuhan ，China; 2. Key Laboratory of Edible Oil Quality and Safety for State Market Regulation，Wuhan ，China; 3. Wuhan Institute for Drug and Medical Device Control，Wuhan ，China |
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| Abstract: |
| A gas chromatography－mass spectrometry was developed for the simultaneous determination of 54 volatile organic pollutants in infant food．1 g of milk powder or 2 g of other sample was firstly put into a 20 mL headspace bottle，then 5 mL sodium chloride saturated solution was added．The sample was heated in a headspace at 90 ℃ for 30 min，and the top gas was injected into the gas chromatography for separation．54 volatile organic pollutants were separated on a DB－VRX capillary chromatographic column，and determined by quadrupole mass spectrometry in full scan mode．The results showed that the linear ranges for each compound in milk powder were from 0.010 to 0.100 mg/kg，with a quantitation limit of 0.010 mg/kg，those for each compound in the powdered infant food ranged from 0.010 mg/kg to 0.250 mg/kg，with a quantitation limit of 0.010 mg/kg，while those for each compound in the muddy infant food ranged from 0.002 mg/kg to 0.250 mg/kg，with a quantitation limit of 0.002 mg/kg．Average recoveries at different spiked levels ranged from 80.6% to 130%，with the relative standard deviations（RSDs） not larger than 19%．35 batches of commercially available infant foods were detected．4-Isopropyltoluene，styrene，toluene，tetrachloroethylene and 1，2-dichloropropane were found in 9 samples．This method is simple and rapid，and it is suitable for the detection of 54 volatile organic pollutants in infant food. |
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