In the analysis, pretreatment of digestion is not needful. The injection of urine sample was composed of urine sample and 2 perceut nitric acid half and half.
本法对尿样不经消化前处理，用2％硝酸对倍稀释后直接进样于石墨炉中进行分析测定的基础条件和铬在尿中的稳定性进行了研究。
Methods: the sample, after the nitric acid and the perchloric acid digestion was induced in the flame atom absorption spectrophotometer with standard series comparison quota.
方法：样品用硝酸和高氯酸消化后，导入火焰原子吸收分光光度计中，与标准系列比较定量。
Methods: After a pretreatment with nitric acid or perchloric acid wet digestion, we used atomic fluorescence spectrometer methodology to detect selenium in human serum and urine.
方法：采用硝酸、高氯酸对尿样及血清进行湿法消解，利用原子荧光光谱法测定其中的硒含量。
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