摘要
采用 (3∶1)硝酸—高氯酸混合酸消化液 ,在加回流管的测砷瓶内分步消化血样 ,用流动注射氢化物发生原子吸收法测定人血中砷硒汞。相对标准偏差小于 9.6 % ,样品加标回收率在 95 1%～ 99 6 %之间 ,方法的检出限在 0 39～ 0 78ng/ml;采用流动注射氢化物发生原子吸收法测定人血中砷硒汞 ,其方法灵敏度高、稳定性好 ,精密度和准确度均符合微量分析要求。
To digest a sample in a mixed acid of HNO 3 and HClO 4 with the ratio of 3 to 1 in a determining arsenic flask with a reflux tube; then, determination by flow injection hydride generation atomic absorption spectroscopy. The RSD is less than 9.6%; the added rate of recovery of sample is between 95.1%～99.6%, the minimal detectable concentration of the method is 0.39～0.79ng/ml. It has high sensitivity and stability and its precision and accuracy are up to the standard of microanalysis.
出处
《微量元素与健康研究》
CAS
2004年第3期43-45,共3页
Studies of Trace Elements and Health
关键词
砷
硒
汞
原子吸收
血
arsenic
selenium
mercury
atomic absorption
blood
