In this paper the reaction of p-acetyl-arsenazo for determination of uran- ium ( IV) was studied. The optimum conditions were tested in the presence of Fe(ll)-CyDTA in 3 N hydrochloric acid medium. With this procedure the levels of tolerence limit of diverse ions as ZrO2+，F-，W6+，MO6+，SO42-and PO43- were higher than those with arsenazo III.
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丁俐俐,赵令密, 1983. 对乙酰基偶氮胂与铀(Ⅳ)显色反应研究和应用[J]. 岩石矿物学杂志, 2(4):309~311. , 1983. The Use of P-acetyl-arsenazo in the Spectrophotometric Determination of Uranium (IV)[J]. Acta Petrologica et Mineralogica, 2(4): 309~311.
