摘要
建立微波消解-电感耦合等离子体发射光谱(ICP-OES)法同时测定化妆品中砷(As)、铅(Pb)和镉(Cd)。方法采用硝酸-双氧水体系,优化了ICP-OES条件。结果表明,3种重金属元素在0.05~1.20 mg/L范围内呈良好线性关系;As,Pb和Cd的相关系数均为0.999 8,检出限分别为0.63,0.30和0.015 mg/kg,定量限分别为2.1,1.0和0.05 mg/kg,平均加标回收率为90.7%~108.6%,相对标准偏差为0.44%~4.59%(n=6)。
A simultaneous determination method for arsenic （As）, lead （Pb） and cadmium （Cd） in cosmetics by inductively coupled plasma - optical emission spectrometry （ ICP - OES） was established. The sample was digested by nitric acid - hydrogen peroxide under the assistance of microwave irradiation. Meanwhile, the conditions of ICP - OES were optimized. The method under optimized conditions shows good linearity with the mass concentrations of the three heavy metal ions in range of 0. 05 - 1.20 mg/L. The corresponding linear correlation coefficients for the heavy metals are all 0. 999 8 with the spiked recoveries ranging within 90.7% - 108.6% ,and the relative standard deviation within 0.44%- 4.59% （n = 6）. The limits of detection and quantification of As,Pb and Cd are 0. 63,0. 30,0. 015 mg/kg and 2. 1,1.0,0. 05 mg/kg,respectively.
出处
《日用化学工业》
CAS
CSCD
北大核心
2017年第10期598-602,共5页
China Surfactant Detergent & Cosmetics
关键词
化妆品
微波消解
电感耦合等离子体发射光谱法
cosmetics
microwave digestion
inductively coupled plasma - optical emission spectrometry
