化妆品中多元素的ICP同时测定研究

文档编号:HG115  文档字数:15194,页数:49

 摘要：随着人们对有害元素认识的加深，越来越多的消费者开始关注化妆品中有害元素的含量，目前，我国已建立了化妆品中铅、砷、汞元素的标准检测方法，随着SK-Ⅱ品牌化妆品检测出含有对人体有害的铬、钕金属元素的报道之后，检测部门又规定了十几种禁限用元素，这使得化妆品中多元素的含量的分析成为研究的热点。
 本文采用电感耦合等离子体发射光谱法（ICP-OES）同时测定化妆品中砷、硼、铍、铋、镉、铬、铁、镍、铅、锑、锶、钛、铊、钒、锌十五种金属元素，对ICP-OES的工作参数和条件进行了优化。元素As、B、Be、Bi、Cd、Cr、Fe、Ni、Pb、Sb、Sr、Ti、Tl、V、Zn的检出限分别为0.1992，0.0037，0.0009，0.1345，0.0311，0.0177，0.0269，0.2921，0.2626，0.2394，0.0010，0.0094，0.1275，0.0525和0.0170μg/ml；在 0～５ppm浓度范围内，其线性回归方程分别为y=96.782x+21.121，y=5595.542x+91.191，y=159294.406x+23.368，
y=161.695x+20.833，y=1974.570x+26.840，y=1429.992x+28.986，
y=2350.253x+59.594， y=298.964x+33.867，y=119.945x+33.785，y=142.550x+41.381，y=523659.188x+230.395，y=12708.850x+52.139，y=144.608x+56.665，y=919.029x+34.390，y=2354.916x+56.659，相关系数均在0.9995以上。最后利用定性性能优越的ICP-MS与本研究方法（ICP-OES）进行比较分析，考察两种方法在样品分析结果上的差异。
 
 关键词：电感耦合等离子体发射光谱法（ICP-OES）；化妆品；有害金属元素；消解

Multi-element method for determination of elements in cosmetics by ICP-OES

Abstract：With people understanding the harmful elements, more and more consumers begin to pay attention to the content of the harmful elements in cosmetics. Now our country has established standard detection methods about Pd、As、Hg which are in cosmetics. After cosmetic SK-Ⅱ was reported it has harmful elements Cr and Ru, the inspection department sets dozens of limit elements, this makes Multi-element method for determination of elements in cosmetics by ICP-OES become hot.
 In this article, we use ICP-OES determination of As、B、Be、Bi、Cd、Cr、Fe、Ni、Pb、Sb、Sr、Ti、Tl、V and Zn. The analytical conditions and parameters of ICP-OES were optimized, The detection limits of  As、B、Be、Bi、Cd、Cr、Fe、Ni、Pb、Sb、Sr、Ti、Tl、V、Zn were 0.1992，0.0037，0.0009，0.1345，0.0311，0.0177，0.0269，0.2921，0.2626，0.2394，0.0010，0.0094，0.1275，0.0525，0.0170μg/ml respectively. The linear range was 0~5 ppm, the linear regression equations of the 15 elements were y=96.78x+21.12，y=5595.54x+91.19，y=159294.41x+23.37，y=161.70x+20.83，y=1974.57x+26.84，y=1429.99x+28.99，y=2350.25x+59.59，y=298.96x+33.87，y=119.95x+33.79，y=142.55x+41.38，y=523659.2x+230.40，y=12708.85x+52.140，y=144.61x+56.67，y=919.03x+34.39，y=2354.916x+56.659 respectively, and the linear correlation might be up to 0.9995 . At last, we use tow kinds of methods——ICP-MS and ICP-OES analysis samples, then look for the difference.
Keywords：Inductively coupled plasma emission spectrometry; Cosmetics;  Harmful metal elements; Digestion

目  录
中文摘要 I
英文摘要 III
目录 Ⅴ
1. 绪论 1
 1.1 研究的必要性 1
 1.2 研究的意义 4
 1.3 国内外研究现状及发展趋势 4
 1.4 化妆品预处理方法的介绍 5
 1.5 ICP-OES简介 8
 1.6 研究的内容和技术路线 9
2. 实验部分 10
 2.1 主要试剂 10
 2.2 主要仪器 10
 2.3 标准溶液的配制   10
 2.4 ICP-OES的工作条件 10
 2.5 室验步骤 12

3. 结果与讨论 13
 3.1 ICP-OES仪器条件的优化    13
 3.2 方法的检测性能 17
4．总结与展望 23
致谢 25
参考文献 26
附录一 28
附录二 36

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