【摘要】 <正> 本文研究使用对甲酞氨基乙酸偶氮氯磷显色剂,在HCl介质中,加入适量的草酸和EDTA,选择λ=675nm测量波长,使含钇为主的龙南稀土矿和含镧、钕为主的寻乌稀土矿的光度测定的工作曲线趋于一致。因而,找到光度测定这两类离子吸附型稀土矿中稀土总量的通用标准。实验部分更多还原

【Abstract】 When p-formylamidoacetic acid chlorophosphonazo is used to form complex with rare earth in HCl medium with addition of H₂C₂O₄ and EDTA and its wavelength is measured at 675nm, spectrophotometric determination curves of two kinds of RE ores, the Longnan ores riched in Y and Xunwu ores riched in La and Nd, in total content tend to the same. So a general calibration curve of two ionic absorb types of RE ores in Jiangxi is obtained.更多还原