浸提法测定化妆品中砷的方法研究
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摘要
采用浸提法对不同性状的化妆品进行前处理,运用原子荧光分光光度计对化妆品中砷元素含量进行测定.结果表明:该方法的检出限为0.000 95 mg/kg,定量限为0.003 3 mg/kg,线性范围为0～10μg/L,相关系数为0.999 2,重复性试验相对标准偏差均小于11%,加标回收率范围为91.72%～108.50%,检测结果与微波消解法无明显统计学差异,对国家标准物质进行检测,结果于证书值范围内.说明试验方法可行,能快速、准确、稳定地检测化妆品中砷元素的含量.
The different cosmetics were pretreated by the extraction method,and their arseniccontents were further measuring by using atomic fluorescence spectrophotometer(AFS).The test results showed that the detection limit and quantification limit was 0.000 95 mg/kg and 0.003 3 mg/kg respectively.The linear range was 0 to 10 μg/L with the linear regression coefficient(R2) of 0.999 2.The RSD of repetitive tests were lower than 11 %,and samples recoveries were in the range of 91.72% ～108.5%.There was no significant difference between the extraction method and the microwave digestion method.For the standard substance,the results were within the certificate value range.It can be concluded that the extractionmethod is suitable for the determination of arsenic in cosmetics,which had with advantages of short testing time,high accuracy and good stability.
The different cosmetics were pretreated by the extraction method,and their arseniccontents were further measuring by using atomic fluorescence spectrophotometer(AFS).The test results showed that the detection limit and quantification limit was 0.000 95 mg/kg and 0.003 3 mg/kg respectively.The linear range was 0 to 10 μg/L with the linear regression coefficient(R2) of 0.999 2.The RSD of repetitive tests were lower than 11 %,and samples recoveries were in the range of 91.72% ～108.5%.There was no significant difference between the extraction method and the microwave digestion method.For the standard substance,the results were within the certificate value range.It can be concluded that the extractionmethod is suitable for the determination of arsenic in cosmetics,which had with advantages of short testing time,high accuracy and good stability.
引文
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[3] DICKENSON C A,WOODRUFF T J,STOTLAND N E,et al.Elevated mercury levels in pregnant woman linked to skin cream from Mexico[J].American Journal of Obstetrics&Gynecology,2013,209(2):E4-E5.
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[5]刘满满,杨目才,梁爱勇.微波消解-石墨炉原子吸收光谱法测定化妆品中痕量的铅[J].理化检验(化学分册),2018,54(9):1066-1067.
[6]秦婷,苏庆,邹琴.微波消解ICP-MS法测定化妆品中镉的不确定度评定[J].计量技术,2019(2):14-17.
[7]佟晓波,段艳杰,孙晓娟,等.电感耦合等离子体质谱法同时测定化妆品中的铅、汞、砷和镉[J].日用化学工业,2014,44(8):476-478.
[8]杨永超,孙永泽,张闯,等.ICP-OES法同时测定化妆品中砷、铅和镉[J].日用化学工业,2017,47(10):598-602.
[9]肖进新.化妆品中金属对人类健康的影响(待续)[J].日用化学品科学,2017,40(9):6-8,10-12.
[10]国家食品药品监督管理总局.《化妆品安全技术规范》(2015版)[S].2015.
[11]李心爱,李周敏,姚颖,等.化妆品中重金属快速检测方法现状及探讨[J].日用化学工业,2018,48(12):711-716.
[12]袁恺.化妆品中重金属的检测方法探讨[J].现代食品,2017(22):50-52.
[13]刘建荣,董兵.化妆品中铅、汞和砷的酸浸提法同时测定[J].中国公共卫生,2005,82(8):1002-1003.
[14]戴骐,周瑛,朱晔.浸提法-ICP-AES测定化妆品中有害元素铅、砷、汞[J].分析试验室,2007,26(11):82-84.