壳聚糖富集火焰原子吸收法测定天然水中痕量铜、锌和镍  

Preconcentration of Cu￣(2+),Zn￣(2+)and Ni￣(2+)on Chitosan and Determination by Atomic Absorption Spcctrometry

作　　者：杨越冬[1] 周永国[1] 齐印阁[1] 王秀娟[1] 马建军[1] 

机构地区：[1]河北农业技术师范学院基础部

出　　处：《河北大学学报（自然科学版）》1996年第3期79-82,共4页Journal of Hebei University(Natural Science Edition)

摘　　要：本文自虾壳中提取了甲壳质，经脱乙酰基后转变为壳聚糖。详细研究了壳聚糖吸附Ｃｕ^（２＋）、Ｚｎ^（２＋）、Ｎｉ^（２＋）的最佳条件，洗脱及再生方法。利用其富集天然水中痕量Ｃｕ^（２＋）、Ｚｎ^（２＋）、Ｎｉ^（２＋）后，火焰原子吸收法测定，回收率为９５．０％～１０３．０％，检出限分别为Ｃｕ０．０７７μｇ／Ｌ，Ｚｎ０．０２４μｇ／Ｌ，Ｎｉ０．１４μｇ／Ｌ。A rapid and less cost method for producing chitosan from shrimp shell and the optimum conditions for enrichment of trace multielement in natural water by chitosan were reported.The used chitosan can be easily regenerated for refuse. Results of determination of such elements by atomic absorption spectrometry revealed that the recovery is 95.6%～102.0% and the detection limit(μg/ L)are 0.077 for Cu￣2+,0.024 for Zn￣2+ and0.14 for Ni￣2+.

关 键 词：壳聚糖 火焰原子吸收法 天然水 铜 锌 镍 

分 类 号：O661.1[理学—分析化学]