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在原子吸收光谱分析中,氯化镧是一种常用的试剂,但详细研究镧等稀土元素对待测杂质影响的报导很少。上海跃龙化工厂中试室等同志讨论了镧、钇、钐对钙的干扰,认为稀土基体的影响是复杂的。浓度低时使钙的吸光度增加,随着基体浓度的增加达种增强作用逐渐下降,并指出采用简单的外推法或标准曲线法往往会导致错误的结果。刘文华等讨
In atomic absorption spectroscopy, lanthanum chloride is a commonly used reagent, but there are few reports on the effects of lanthanum and other rare earth elements on the impurities to be measured. Shanghai Yuelong Chemical Factory pilot room and other comrades discussed the lanthanum, yttrium, samarium on calcium interference, that the impact of rare earth matrix is complex. When the concentration is low, the absorbance of calcium is increased, and the increasing effect of the substrate is gradually decreased as the matrix concentration is increased. It is pointed out that the simple extrapolation method or standard curve method will often lead to wrong results. Liu Wenhua and other discussion