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目的保证石墨炉原子吸收分光光度法大批量测定全血铅的结果准确,具有量质溯源性。方法按卫生部文件(卫医发[2006]10号)附件《血铅临床检验技术规范》进行。结果该实验室测定血铅时方法线性关系好,相关系数为0.9997,检出限为5μ/L,定量检出浓度为15μg/L,加标回收率在90%～110%,平行双样RSD(%)为1.1%～8.9%,平均值质控图对标准物质的质控贯穿于整个实验过程中,控制效果良好。结论大批量全血铅的测定时,采用几种质控方法控制检测过程效果良好,对保证检测结果的准确至关重要。
Purpose To ensure that graphite furnace atomic absorption spectrophotometry is accurate for mass determination of whole blood lead with traceability. Methods according to the Ministry of Health documents (Wei [2006] No. 10) Annex “blood lead clinical laboratory technical specifications”. Results The method of determination of blood lead in this laboratory had a good linear relationship with a correlation coefficient of 0.9997, a detection limit of 5 μL / L, a quantitative detection limit of 15 μg / L and a spiked recovery of 90% -110% (%) Ranged from 1.1% to 8.9%. The quality control of the average quality control chart of the standard substance throughout the experiment, the control effect is good. Conclusion In the determination of large quantities of whole blood lead, several quality control methods are used to control the testing process well, which is very important to ensure the accuracy of test results.