【摘要】 目的建立干灰化法消解样品、氢化物原子荧光光度法测定化妆品中锑的方法。方法采用正交试验确定干灰化法的样品前处理条件,再用氢化物原子荧光光度法测定样品中锑的含量。结果经试验研究最终的干灰化法样品处理条件为:氧化镁0.5 g、六水硝酸镁0.5 ml、灰化温度450℃、灰化时间4 h。该方法检出限为0.14μg/L;标准曲线的线性范围为2～20μg/L,相关系数≥0.999 2;平均回收率为83.8%～113.0%,相对标准偏差为2.1%～8.3%。结论该方法精密度好,准确度高,适用于化妆品中锑的日常测定。更多还原

【Abstract】 Objective To develop a dry ashing digestion-hydride atomic fluorescence spectrometry determination method for the determination of antimony in cosmetics.Methods Dry ashing of sample preparation conditions were derived by orthogonal experiment,then antimony was determined by hydride generation-atomic fluorescence spectrometry.Results The detection limit was 0.14 μg/L and the linear ranges of the calibration curves for antimony was 2-20 μg/L.The correlation coefficients of the standard curves were more than 0.999 2.The average recoveries at the concentrations studied were in the range from 83.8% to 113.0%.Relative standard deviations were from 2.1% to 8.3%.Conclusion This method has higher precision and accuracy,and can be used for the determination of antimony in cosmetics.更多还原