近年来,由于原子吸收分光光度计的不断改进和完善,测量精度已有很大的提高,致使能直接地在土壤消化液中测量微量的Cu、Zn、Ni、Co、Pb等元素。其方法一般是采用增加样品用量和缩小消化液定容体积,以便相对地提高消化液中测定元素的浓度,并结合样品溶液中回收率试验的好坏,以确定方法的可靠 In recent years, due to the continuous improvement and improvement of atomic absorption spectrophotometer, the measurement accuracy has been greatly improved, resulting in the direct measurement of trace amounts of Cu, Zn, Ni, Co and Pb in soil digestion solution. The method is generally used to increase the amount of sample and reduce the volume of digestion solution volume, in order to relatively increase the concentration of elements in the digestion solution, combined with the sample solution recovery test to determine the reliability of the method