论文部分内容阅读
本文研究了Triton X-100存在下新显色剂对甲基偶氮氯膦(CPApM)与钇的显色体系,在pH 5.0的HOAc-NaOAc介质中,显色反应灵敏度极高,755nm处摩尔吸光率为1.82×10~5,用磺基水杨酸钠作掩蔽剂,可减少其它稀土元素的干扰,方法可不经分离直接测定混合稀土氧化物中的钇。用PMBP-苯萃取分离可消除大量共存离子的干扰,方法应用于镍基合金和矿石中钇的测定,结果良好。
In this paper, a new chromogenic reagent for methyl chlorophosphonazo (CPApM) and yttrium was studied in the presence of Triton X-100. The color reaction was very sensitive in HOAc-NaOAc at pH 5.0. The molar ratio of Absorbance of 1.82 × 10 ~ 5, sodium sulfosalicylate as a masking agent, can reduce the interference of other rare earth elements, the method can be directly measured without mixing yttrium rare earth oxides. Extraction with PMBP-benzene can eliminate the interference of a large number of coexisting ions, and the method is applied to the determination of yttrium in nickel-base alloy and ore with good results.