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采用ＤＰＡＳＶ法测定金属Ｎａ中的痕量元素Ｃｄ。以正交试验法确定最佳仪器条件。试样可不经分离在ｐＨ２ＮａＮＯ＿３溶液中直接测定Ｃｄ。其检测下限达０．０２ｎｇ／ｍｌ。测得值的相对标准偏差为１２％。
Determination of Trace Elements Cd in Metal Na by DPASV Method. Orthogonal test to determine the best instrument conditions. The sample can be directly measured in pH2NaNO_3 solution without isolation Cd. The detection limit of 0.02ng / ml. The relative standard deviation of the measured values was 12%.