ICP-MS法测定美白祛斑类化妆品中的汞、砷、铅、镉和铬
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摘要
为建立电感耦合等离子体质谱法(ICP-MS法)测定美白祛斑类化妆品中汞、砷、铅、镉、铬5种元素含量的方法,将样品经硝酸和过氧化氢微波消解后,用电感耦合等离子体质谱仪测定美白祛斑类化妆品中重金属汞、砷、铅、镉、铬的含量。结果发现:汞、砷、铅、镉、铬混合标准溶液在0～100 ng/mL范围内线性关系良好,相关系数为0.9998～1.0000,各元素最低检出浓度均小于0.1 mg/kg,各元素加标回收率在97. 5%～108. 6%之间。该方法简便、灵敏,有较低的检出限,符合方法学验证要求,可用于美白祛斑类化妆品中汞、砷、铅、镉、铬的同时测定。
To establish the method for determining the contents of mercury, arsenic, lead, cadmium and chromium in whitening cosmetics by inductively coupled plasma mass spectrometry(ICP-MS), after the samples were digested by microwave with nitric acid and hydrogen peroxide, they were analyzed. The results showed that the mixed standard solutions of mercury,arsenic, lead, cadmium, and chromium had a good linear relationship in the range of 0 to 100 ng/mL, the correlation coef?cient of each element was 0.9998 to 1.000 0, and the detection limits was less than 0.1 mg/kg,the recoveries of spiked samples ranged from 97.5% to 108.6%. This method is simple, high sensitivity, and has a low detection limit, which meets the requirements of the methodology validation. It can be used for simultaneous determination of mercury, arsenic, lead, cadmium and chromium in whitening cosmetics.
To establish the method for determining the contents of mercury, arsenic, lead, cadmium and chromium in whitening cosmetics by inductively coupled plasma mass spectrometry(ICP-MS), after the samples were digested by microwave with nitric acid and hydrogen peroxide, they were analyzed. The results showed that the mixed standard solutions of mercury,arsenic, lead, cadmium, and chromium had a good linear relationship in the range of 0 to 100 ng/mL, the correlation coef?cient of each element was 0.9998 to 1.000 0, and the detection limits was less than 0.1 mg/kg,the recoveries of spiked samples ranged from 97.5% to 108.6%. This method is simple, high sensitivity, and has a low detection limit, which meets the requirements of the methodology validation. It can be used for simultaneous determination of mercury, arsenic, lead, cadmium and chromium in whitening cosmetics.
引文
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[7]王欣美,王柯.电感耦合等离子体质谱法同时测定化妆品中12种元素[J].日用化学工业, 2014, 44(12):710-713.
[2]李丽敏,王欣美,王珂,等.电感耦合等离子体质谱法测定化妆品中15种有害元素[J].理化检验-化学分册, 2008, 44(8):728-731.
[3]张妮娜,刘丽萍.微波消解-电感耦合等离子体质谱法测定8类化妆品中23种元素[J].环境化学, 2013, 32(9):1815-1818.
[4]张遴,钟战强,乔冠华,等.电感耦合等离子体质谱法测定霜状化妆品中铅、镉、铬、砷和汞[J].食品安全质量检测学报,2015, 6(2):701-703.
[5]陈湘君,林松,李邦进.微波消解-电感耦合等离子体质谱法同时测定化妆品中五种微量元素[J].福建分析测试, 2007,16(4):17-19.
[6]何霜,寻知庆,黄少漫,等.超级微波消解-ICP-MS法快速测定不同基质化妆品中8种重金属元素[J].日用化学工业,2017, 47(10):593-597.
[7]王欣美,王柯.电感耦合等离子体质谱法同时测定化妆品中12种元素[J].日用化学工业, 2014, 44(12):710-713.