【摘要】 8-羟基喹啉(pH8.3)分光光度法对酸性土壤中的可溶性铝测定的研究表明,Al标准曲线的线性范围为0 ~ 50 mmol/L,相关系数R2 = 0.9999,表观摩尔吸光系数为1.995 104 L/(mol·cm),回收率在98.7 % ~ 106.8 %之间,该方法重现性好,选择性高。更多还原

【Abstract】 A spectrophotometry based on the extraction of the 8-hydroxyquinoline complex (at pH8.3) into butyl acetate was introduced to determine the soluble Al in acid soil solutions. The linear range of the determination is from 0 to 50mmol/L with a significant correlation (R2: 0.9999). The method is sensitive with an apparent molar absorptivity of 1.995104 L/(mol·cm). The results from recovery test showed that the recovery rate was from 98.7% to 106.8%.更多还原