直接稀释-石墨炉原子吸收法测定全血中的铅  

Measurement of lead by direct dilution-graphite furnace atomic absorption spectrometry in whole blood

作　　者：陈夏芳[1] 陈桂仙[2] 

机构地区：[1]浙江省金华市疾病预防控制中心,浙江金华321000 [2]浙江省永康市疾病预防控制中心,浙江永康321300

出　　处：《中国卫生检验杂志》2008年第6期1100-1102,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的：建立直接稀释-石墨炉原子吸收光谱法测定全血中铅的方法。方法：用混合基体改进剂[0.2 g/L PdCl2＋0.1 g/L Tritonx-100＋1.0 ml/L HNO3]直接稀释血样,Zeeman石墨炉原子吸收光谱仪,全自动进样方法进行测定。结果：方法线性范围为0～40μg/L,相关系数为0.9998,RSD为3.3%～10%,回收率为90%～103%,方法的检出限为1.2μg/L。结论：该法准确度、精密度良好,样品不需消化,污染小,是一种简便、快速、可行的测定全血中铅的方法。Objective：To explore the measurement of lead with direct dilution - graphite furnace atomic absorption spectrometry in whole blood. Methods：The whole blood was diluted with mixing matix modifiers [0. 2 g/L PdCl2 ＋0. 1 g/L Tritonx - 100 ＋ 1.0 ml/L HNO3 ], then the samples were automatically introduced and the lead in the blood was measured with zeeman graphite furnace atomic absorption spectrometer. Results：There was significant linear relation between absorbance and lead level which was 0 - 40 μg/L（ r = 0. 9998 ）. And the range of the relative standard deviation （RSD） was 3. 3% - 10% , the range of recovery rate was 90% - 103% and detection limit was 1.2μg/L Conclusion：The measurement is characterized by good degree of accuracy and precision and no need for chemical treatment as well as lower pollution.

关 键 词：全血 直接稀释 石墨炉原子吸收分光光度法 铅 

分 类 号：O657.31[理学—分析化学]