摘要
目的:建立一种直接稀释-石墨炉原子吸收法测定人体尿液中铅含量的方法。方法:用硝酸酸化,以0.2%Triton X-100溶液为基体改进剂稀释尿样,SpectAA220原子吸收分光光度计(具GTA110石墨炉原子化器、氘灯背景校正),自动进样方法进行测定。结果:方法的线性范围为0μg/L～50μg/L,相关系数为0.9996,RSD为4.0%～10.0%,回收率为93%～98%,方法的检出限为1.2μg/L。结论:该方法精密度好、准确度高、快速简单,能很好地满足尿液中铅含量测定的要求。
Objective：To explore the measurement of lead with direct dilution-graphite furnace atomic absorption spectrometry in urine.Methods：The urine was acidified by nitric acid and was diluted with matrix modifier [0.2% Tritonx-100],then the samples were automatically introduced and the lead in the urine was measured with deuterium lamp graphite furnace atomic absorption spectrometer.Rusuits：There was significant linear between absorbance and graphite lead level which was 0 μg/L～50 μg/L（r=0.9996）.And the range of the relative standard deviation（RSD） was 4.0%～10.0%,the range of recovery rate was 93%～98% and detection limit was 1.2 μg/L.Conclusion：The measurement is characterized by good degree of accuracy and precision and no need for chemical treatment as lower pollution.
出处
《中国卫生检验杂志》
CAS
2010年第7期1653-1655,共3页
Chinese Journal of Health Laboratory Technology
关键词
石墨炉原子吸收法
直接
尿
铅
Graphite furnace atomic absorption spectrometry
Derect
Urine
Lead
