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随着稀土在冶金中应用的发展,要求有相应的稀土总量与轻重稀土分量的测定方法。 我国稀土资源丰富,矿源轻重比例各不相同,这就反映到加入钢铁中的稀土元素轻重比例也各不相同。尽管以前测定稀土总量的灵敏显色剂很多,但大多数对轻稀土的发色能力强、摩尔吸光系数较大;而对重稀土含量高的样品,测其总量就存在着因轻重稀土比例不同而检量线不同的问题。
With the development of the application of rare earth metallurgy, there is a demand for the determination of the total amount of rare earths and light and heavy rare earth components. Rare earth resources in our country, the proportion of different mineral sources, which reflects the proportion of rare earth elements added to the steel also vary. Although many of the sensitive reagent for determining the total amount of rare earth before are found, most of them have strong color-developing ability and high molar extinction coefficient. For the samples with high content of heavy rare earths, Different proportions of the calibration line different problems.