摘要
建立了84消毒剂中痕量铅的微波消解–石墨炉原子吸收光谱测定方法。84消毒液以硝酸为消解试剂,用微波消解法进行消解。用2%磷酸二氢铵为基体改进剂,在优化后的仪器工作条件下测定。铅的质量浓度在0~80.0ng/mL范围内与吸光度呈良好的线性关系,线性相关系数r=0.999 3,方法检出限为0.005 4 mg/kg,平均回收率为94.66%,测定结果的相对标准偏差为1.87%(n=6)。该方法灵敏度与准确度高,可用于84消毒剂中痕量铅的检测。
A method for the determination of trace lead in84disinfectant by microwave digestion-graphite furnace atomic absorption spectrometry was established.84disinfectants was digested with nitric acid,and then determined by using2%ammonium dihydrogen phosphate solution as matrix modifier under the optimized instrument condition.The mass concentration of lead had good linear relationship with the absorbance in the range of0-80.0ng/mL(r=0.9993),the detection limit was0.0054mg/kg,the average recovery was94.66%and the relative standard deviation of determination results was1.87%(n=6).The method was sensitive,accurate and reliable and it can be used for the detection of trace lead in84disinfectant.
作者
白娟
周秀红
李成网
Bai Juan;Zhou Xiuhong;Li Chengwang(Anhui Academy of Medical Sciences, Hefei 230061, China)
出处
《化学分析计量》
CAS
2017年第3期54-56,60,共4页
Chemical Analysis And Meterage
关键词
微波消解
石墨炉原子吸收光谱法
痕量铅
消毒剂
microwave digestion
graphite furnace atomic absorption spectrometry
trace lead
disinfectant
