血清中铟的石墨炉原子吸收光谱直接测定法  

Determination of indium in serum by graphite furnace atomic absorption spectrometry

作　　者：李燕[1] 韦国铭[1] LI Yan;WEI Guo-ming(Guangxi Zhuang Autonomous Region A cademy for Prevention and Treatment of Occupational Diseases,Nanning,Guangxi 530021,China)

机构地区：[1]广西壮族自治区职业病防治研究院

出　　处：《环境与健康杂志》2018年第7期627-629,共3页Journal of Environment and Health

基　　金：广西卫生厅课题(Z20170551)

摘　　要：目的通过考察不同基体改进剂对石墨炉原子吸收光谱(GFAA)法测定血清中铟的增感效应,建立直接测定血清中铟的新方法。方法以0.1%硝酸-0.1%Triton X-100(V/V)混合溶液为稀释液、1 g/L硝酸钯溶液为基体改进剂,灰化温度为1 000℃,原子化温度为1 900℃,对血清进行5倍稀释后,直接采用石墨炉原子吸收光谱法测定铟的浓度。结果在0.156~100μg/L的线性范围内,该方法所得铟的回归方程为A=0.001 7c+0.003 6,r=0.999 6。该方法的检出限为0.156μg/L,RSD为2.82%~7.57%,回收率96.3%~105.0%。结论该方法具有简便、快速、回收率高、精密度好等优点,适用于血清中铟浓度的测定。Objective To investigate the sensitization effect of different chemical modifiers in the determination of indium in serum by graphite furnace atomic absorption spectrometry (GFAA)and to develop a new method for the determination of indium in serum.Methods Totally 0.1% HNO3-0.1%Triton X-100(V/V)was taken as the diluents and 1g/L Pd (NO3)2as the matrix modifier,after five-fold dilution,the concentration of indium in serum was directly determined by GFAA at 1000℃ for ashing and 1900℃ for atomization.Results In the linear range of 0:156-100.0μg/L,the regression equation of indium in serum was A =0.0017c+0.0036 and showed a good linear relationship,r=0.9996.The limit of detection was 0.156μg/L,the RSDs were 2.82%-7.57%and the recovery rates were 96.3%-105.0%.Conclusion The method is simple,rapid,with high recovery and precision,and is applicable to the determination of indium in serum.

关 键 词：石墨炉原子吸收光谱法 血清 铟 

分 类 号：O657.6[理学—分析化学]