Determination of Chromium(Ⅲ) and Chromium(Ⅵ) in Children’s Toys Using High Performance Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry
  
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DOI:10.3969/j.issn.1004-4957.年份.月份
KeyWord:high performance liquid chromatography- inductively coupled plasma mass spectrometry(HPLC-ICP-MS)  toy  chromium(Ⅲ)  chromium(Ⅵ)  EN71-3
  
AuthorInstitution
张冀飞*,高欣,杨晓兵 北京出入境检验检疫局
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Abstract:
      A high performance liquid chromatography- inductively coupled plasma mass spectrometric(HPLC-ICP-MS) method was established for the determination of chromium(Ⅲ) and chromium(Ⅵ) in children’s toys.By investigating pH value, mobile phase,flow rate, ICP-MS operating conditions and parameters,the detection limits of chromium(Ⅲ)and chromium(Ⅵ)(S/N=3) were obtained to be 0.024 mg/kg and 0.015 mg/kg,respectively,which could meet the requirements of the EN71-3 categoryⅠand category Ⅲ for determination of migratable chromium(Ⅲ)and chromium(Ⅵ) in children’s toys.The spiked recoveries varied from 85.4% to 119%,with relative standard deviations of 3.0 %-5.0 %.The proposed method was successfully applied in the determination of chromium(Ⅲ) and chromium(Ⅵ) in commercially available toys,including plastic children’s toys,stuffed children’s toy and paper children’s toys.The results demonstrated that the developed method was simple,rapid,sensitive and accurate.
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