纸上分光光度法测定铝(Ⅲ)的研究  

Studies on the Paper Absorption Spectrophotometric Determination of Holoaluminum(Ⅲ)of the Soil

作　　者：刘晓庚[1] 任建敏[1] 

机构地区：[1]江西农业大学

出　　处：《江西师范大学学报（自然科学版）》1992年第3期252-255,共4页Journal of Jiangxi Normal University(Natural Science Edition)

摘　　要：本文研究了在HAc—NaAc介质中,以金精三羧酸三铵盐(AAC)为沉淀显色剂,与Al^(3+)生成红色沉淀,沉淀吸滤到滤纸上,再将滤纸置于721型分光光度计中,于λ_(max)=525nm下进行测定,此法操作简便,选择性较好,灵敏度较高。Al^(3+)的标准曲线在0～50μg/25ml范围内呈良好的线性关系,用本法测定茶枯饼、土壤和人发中的铝获得了令人满意的结果。The titled method was based on the AAC precipitable effect on the colour reaction with AI(Ⅲ) in the HAc-NaAc buffer medium. The red precipitation was then deposited on a small piece of paper through a filter pipette. Followed by the determination of fleck at 525 nm with spectrophotometer model 721. The main advantages of this method were simple,rapid,good selection and high sensitivity (3×10^(-10) g.1^(-1)). The calibration curve of Al (Ⅲ)were linear in the range of 0～50μg/25 ml. The method has been applied to the analysis of camellia oleifera cake, soil and hair with satisfactory results.

关 键 词：滤纸 铝 测定 分光光度法 

分 类 号：O614.31[理学—无机化学]