摘要
介绍氢化物发生 原子荧光光谱法对化妆品中铅含量的定量分析方法 ,并研究原子荧光光谱测定铅的分析条件。方法检出限低、精密度高、准确性好 。
The hydride generation atomic fluorescence spectrometric method was used for the determination of trace amounts of lead in cosmetics. The sample was digested with HNO 3 and H 2O 2. Lead(Ⅱ) ion in the sample solution was oxidized to Pb(Ⅳ) and reacted with KBH 4 to generate PbH 4, which was led into the atomizer, and the lead content was determined by AFS according to the optimized working conditions. A linear calibration curve with lead concentration in the range of 0.0～200.0ng·ml -1 was prepared, having a correlation coefficient of 0.9998. RSD′s of less than 1% were found at concentration levels of 19μg·g -1 and 38μg·g -1 with 11 determinations. Recoveries in the range of 96.0% to 101.5% were obtained. The detection limit achieved a value of 0.5ng·g -1 , which was much lower than the value of 4μg·g -1 by AAS method.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2003年第2期94-95,共2页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
