色谱 ›› 2015, Vol. 33 ›› Issue (3): 282-290.DOI: 10.3724/SP.J.1123.2014.11017

• 研究论文 • 上一篇    下一篇

高效液相色谱法同时检测化妆品中38种限用着色剂

毛希琴1, 李春玲2, 任国杰2, 张国翠2, 李晓菲1, 李鹏1   

  1. 1. 大连市食品检验所, 辽宁 大连 116630;
    2. 大连市产品质量监督检验所, 辽宁 大连 116630
  • 收稿日期:2014-11-13 修回日期:2014-11-26 出版日期:2015-03-08 发布日期:2015-02-12
  • 通讯作者: 毛希琴
  • 基金资助:

    国家质检总局公益性行业科研专项项目(2012104013-8).

Simultaneous determination of 38 limited colorants in cosmetics by high performance liquid chromatography

MAO Xiqin1, LI Chunling2, REN Guojie2, ZHANG Guocui2, LI Xiaofei1, LI Peng1   

  1. 1. Dalian Institute for Food Control, Dalian 116630, China;
    2. Dalian Institute of Product Quality Supervision & Inspection, Dalian 116630, China
  • Received:2014-11-13 Revised:2014-11-26 Online:2015-03-08 Published:2015-02-12

摘要:

建立了高效液相色谱法同时测定化妆品中颜料红4等38种限用着色剂的检测方法。样品经四氢呋喃、甲醇、乙酸铵水溶液混合溶剂超声提取后,经离心、氮吹和复溶,于Agilent zorbax SB-Aq色谱柱(150 mm×3.0 mm, 3.5 μm)上进行反相液相色谱分离,以乙腈和含0.075%(v/v)甲酸的30 mmol/L乙酸铵溶液为流动相进行梯度洗脱。选择254、416、484、514、590和620 nm作为检测波长进行定量分析。结果表明:在1~10 mg/L的质量浓度范围内,38种限用着色剂的色谱峰面积与质量浓度呈线性相关,相关系数(r)大于0.999, LOQ值为5~50 μg/g。在100 μg/g和500 μg/g两个加标水平下,各目标化合物回收率均在93.2%~107.6%之间,相对标准偏差(RSD)小于10%(n=6)。该方法简便、快速、灵敏度高、重现性好,适合于化妆品中限用着色剂的定性与定量检测。

关键词: 高效液相色谱, 化妆品, 限用着色剂

Abstract:

A method has been established for the simultaneous determination of 38 limited colorants in cosmetics by high performance liquid chromatography (HPLC). The samples were extracted by ultrasonic with tetrahydrofuran, methanol, ammonium acetate solution as extraction solvents. After centrifugation, nitrogen blow and redissolved in turn, the extracts were separated on an Agilent zorbax SB-Aq column (150 mm×3.0 mm, 3.5 μm) using a gradient elution program with acetonitrile and 30 mmol/L ammonium acetate containing 0.075% (v/v) formic acid as mobile phases. The detection wavelengths were set at 254, 416, 484, 514, 590 and 620 nm. The linear ranges of the 38 target compounds were all in the range of 1 to 10 mg/L with correlation coefficients more than 0.999. The limits of quantification (LOQs) for the 38 colorants were in the range of 5-50 μg/g. The average recoveries at two spiked levels ranged from 93.2% to 107.6% with the relative standard deviations (RSDs) less than 10% (n=6). This method is accurate, simple, sensitive and reliable, and can be used for the analysis of the 38 limited colorants in cosmetics.

Key words: cosmetics, high performance liquid chromatography (HPLC), limited colorants

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