Determination of 9 Organic Compound Residues in Toys by Gas Chromatography-Mass Spectrometry
  
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DOI:10.3969/j.issn.1004-4957.年份.月份
KeyWord:gas chromatography-mass spectrometry(GC-MS)  organic residues  toys
  
AuthorInstitution
吕庆,张庆,康苏媛,白桦,王超 中国检验检疫科学研究院工业品检验研究所
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Abstract:
      A gas chromatography-mass spectrometric(GC-MS) method was developed for the determination of 2-ethoxyethanol, 2-methoxyethyl acetate, styrene, 2-ethoxyethyl acetate, cyclohexanone, bis(2-methoxyethyl)ether, 1,3,5-trimethylbenzene, nitrobenzene and isophorone in toys. The experimental conditions were optimized.Toy sample was extracted with appropriate solvent and followed by centrifugalization,then purified with an Envi-carb solid-phase extraction column.The extract was concentrated, and then determined by GC-MS with the external standard method.The calibration curves were linear in the range of 0.5-100 mg/L for 2-ethoxyethanol, 0.05-100 mg/L for styrene, 1,3,5-trimethylbenzene and isophorone, and 0.1-100 mg/L for rest of the targeted compound.The correlation coefficients were all not less than 0.999 5 and the limits of quantitation of 9 organic compounds ranged from 0.1 mg/kg to 1.0 mg/kg.The average recoveries for eight kinds of the substances at three spiked concentration levels ranged from 70% to 94%, except for 1,3,5-trimethylbenzene with low recovery.The relative standard deviations(RSDs) of the method were in the range of 2.8%-6.5%.The method is accurate and simple, and is suitable for the analysis of 9 organic compound residues in various toys.
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