中国皮革

2019, v.48;No.756(12) 12-15

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皮革中可萃取六价铬含量的HPLC测定
Determination of extractable hexavalent chromium in leather with high performance liquid chromatography

林传楗;马贺伟;喻志瑶;朱祎雯;
LIN ChuanJian;MA Hewei;YU Zhiyao;ZHU Yiwen;College of Material and Textile Engineering,Jiaxing College;

摘要(Abstract):

建立了皮革中可萃取六价铬含量的液相色谱(HPLC)检测方法。样品的萃取及衍生化操作与GB/T22807相同,衍生化后的样液采用HPLC进行测定。色谱柱为Diamonsil-C_(18),流动相为A(甲醇)∶B(10mmoL/L的磷酸水溶液)=35∶65(v/v),流速为0.9 mL/min。方法检测限为0.5 mg/kg,回收率和重复性均满足分析要求。实际样品测试结果表明:该方法有效消除了样液中杂质(颜色)的干扰,定性/定量准确、灵敏度高,适用于颜色干扰显著的皮革内六价铬含量的测试。
A procedure was established for determining extractable hexavalent chromium in leather with high performance liquid chromatography(HPLC).The operation of sample extraction and derivation was the same as the description in GB/T 22807,and the derivative was then subjected to HPLC for analysis.The used HPLC column was Diamonsil-C_(18),and the mobile phase was 35%(methanol) and 65%(10 mmol/L phosphoric acid solution) with isocratic elution at the flow rate of 0.9 mL/min.The detection limit was 0.5 mg/kg.The recovery rate and reproducibility were both satisfied.The results indicate that the method can effectively reduce the disturbance of colorants in the solution,and ensure the reliability of qualitative and quantitative analysis with high sensitivity.It is suitable for determining hexavalent chromium in leather with serious color interference.

关键词(KeyWords): 六价铬;分析检测;高效液相色谱法;颜色干扰;萃取
hexavalent chromium;detection;high performance liquid chromatography;colorants disturbance;extraction

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基金项目(Foundation): 嘉兴市皮革和纺织品染整清洁生产创新团队研究项目;; 嘉兴学院SRT项目

作者(Author): 林传楗;马贺伟;喻志瑶;朱祎雯;
LIN ChuanJian;MA Hewei;YU Zhiyao;ZHU Yiwen;College of Material and Textile Engineering,Jiaxing College;

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