甲壳素色谱柱富集—快速吸光光度法测定环境试样中痕量铁  

RAPID PHOTOMETRIC DETERMINATION OF TRACE AMOUNTS OF IRON IN ENVIRONMENTAL SAMPLES AFTER ITS PRECONCENTRATION ON CHITIN COLUMN

作　　者：余晓蔚[1] 何应律[1] 李红柳 赵锦端[1] 王茀鹏 

机构地区：[1]中国地质大学应化系,武汉430074

出　　处：《理化检验（化学分册）》1996年第3期148-149,151,共3页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：研究了甲壳素色谱柱富集Fe(Ⅱ)-磺基水杨酸-十八烷基二甲基氨基乙酸的红紫色缔合物,用磺基水杨酸洗脱后,在分光光度计上直接测定洗脱液的吸光度,方法快速,简单、富集倍数高,用于环境水样中痕量铁的测定,结果令人满意。It is reported in this paper that trace amounts of iron is made to react with sulfo-salicylic acid to form Fe(Sal)+ which in turn to react with octydecyl dimethylaminoacetic acid forming an ion association complex. It is then adsorbed on chitin which is packed in a chromatographic column. The ion association complex of iron is desorbed from the column by washing with 8ml of a eluting solution containing lg of sulfosalicylic acid per each 100ml of solution. The eluting solution is collected in a 10ml volumetric flask and diluted to mark. Absorption reading is taken with 3cm cell at 480nm using reagent blank as reference. The proposed method has been applied to the determination of iron in environmental sample with satisfactory results.

关 键 词：铁 磺基水杨酸 甲壳素 光度法 

分 类 号：X132[环境科学与工程—环境科学] O614.811[理学—无机化学]