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本文对新显色剂三氯偶氮胂与稀土元素的显色反应进行了研究.该试剂灵敏度高,选择性好.用直接光度法测定水中痕量稀土,取得了满意的结果.
In this paper, the color reaction of trichloroarsenazo with rare earth elements was studied, which has high sensitivity and good selectivity.Determination of trace rare earths in water by direct spectrophotometry has yielded satisfactory results.