化学浸提-分光光度法测定沙棘叶中不同形态铝  

Determination of Various Species of Aluminum in Sea-buckthorn Leaf by Chemical Extractions Combined with Spectrophotometry

作　　者：赵二劳[1] 石荣花[1] 李满秀[1] 程琳[1] 

机构地区：[1]忻州师范学院化学系,山西忻州034000

出　　处：《分析科学学报》2009年第4期455-457,共3页Journal of Analytical Science

基　　金：山西省高校科技开发研究项目(No.200611041)

摘　　要：利用KCl、NH4Ac、HCl、NaOH四种浸提液将沙棘叶中的铝浸提溶出，得到沙棘叶中铝的不同化学形态，采用分光光度法定量测定，测定结果：沙棘叶中的Al^3＋为10．7％，Al（OH）^2＋和Al（OH）2^＋为2．1％，胶态Al（OH）3^0为34．3％，有机铝为53．0％。浸提液中铝的回收率为86．9％～101．0％。Using four kinds of extraction solutions, i. e. , potassium chloride, ammonium acetate, hydrochloric acid, and sodium hydroxide solutions, the various chemical species of aluminum in Sea-buckthorn Leaf were obtained. The leaching aluminum species were determined with spectrophotometry, and the percentage distribution of aluminum species in the Sea-buckthorn leaf was calculated. The fraction of Al^3＋ in the total aluminum was 10.7%, AI（OH）^2＋ and Al（OH）^＋ was 2.1%, AI（OH）3^0 was 34.3%, and the organic aluminum was 53.0%. The recovery of aluminum was in the range of 86.9%-101.0%.

关 键 词：沙棘叶 铝 分光光度法 形态分析 

分 类 号：O657.3[理学—分析化学]