目的建立胶体钯化学改进剂用于石墨炉原子吸收光谱法测定血中铅的方法。方法血样经5%(V/V)硝酸沉淀蛋白质后,以胶体钯作为化学改进剂,石墨炉原子吸收光谱法直接测定。结果方法的相关系数大于0.999,检出限为0.6μg/L,样品加标的回收率为96.0%~100.7%,相对标准偏差<2%。对标准物质进行分析,测定结果在证书值范围内。结论该方法准确、灵敏、简便,可以满足血中铅的测定 Objective To establish a method of colloidal palladium chemical modifier for determination of lead in blood by graphite furnace atomic absorption spectrometry. Methods Blood samples were precipitated with 5% (V / V) nitric acid and colloidal palladium was used as a chemical modifier to directly determine the content by graphite furnace atomic absorption spectrometry. Results The correlation coefficient of the method was greater than 0.999, the detection limit was 0.6μg / L, the spiked sample recovery was 96.0% ~ 100.7% and the relative standard deviation was less than 2%. Analysis of the standard material, the measurement results in the certificate value range. Conclusion The method is accurate, sensitive and simple, and can meet the determination of lead in blood