超级微波消解-电感耦合等离子体质谱法测定化妆品中4种微量元素

Determination of 4 Species of Trace Elements in Cosmetics by Super Microwave Digestion-Inductively Coupled Plasma Mass Spectrometry

依据超级微波消解-电感耦合等离子体质谱法(ICP-MS)对甘肃省内各个市、州、县地区在售的53批次粉状彩妆类化妆品进行检测,采用在线内标校正、外标法定量分析彩妆类化妆品中铅、砷、汞、镉等4种元素的含量情况.在曲线浓度0~100μg/L(Hg:0~5μg/L)时,样品检出限为0.000016~0.0046 mg/kg,线性相关系数均大于0.9985,内标RSD小于5.0%,加标回收率为78.3%~104.8%.试验结果表明,在同时测定粉状彩妆类化妆品中4种元素过程中,方法简便、快捷、省时、节约成本,并且灵敏度高、重现性好.

According to the microwave digestion-inductively coupled plasma mass spectrometry(ICP-MS),53 batches of powder cosmetics samples from various cities,prefectures and counties in Gansu province were tested.The contents of lead,arsenic,mercury and cadmium in cosmetics were quantitatively analyzed using an online internal standard correction and external standard method.When the curve concentration was 0~100μg/L(Hg:0~5μg/L),the detection concentration was 0.000016~0.0046 mg/kg,the linear correlation coefficients were all greater than 0.9985,the internal standard RSD was less than 5.0%,and the recovery was 78.3%~104.8%.The test results showed that the method is simple,fast,time-saving,cost saving,highly sensitive and has a good reproducibility in the process of simultaneous determination of four elements in powder cosmetics.