萃取富集-火焰原子吸收光谱法测定水中镍  

FAAS DETERMINATION OF NICKEL IN WATER —— PRECONCENTRATION BY SOLVENT EXTRACTION

作　　者：王晓[1] 

机构地区：[1]广东省南海市南海发展股份有限公司,南海528200

出　　处：《理化检验（化学分册）》2004年第7期399-400,共2页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：探讨了有机溶剂萃取和有机相经加热蒸发相结合在富集分离水中镍的应用,结合火焰原子吸收光谱法,提高了灵敏度,设备简单,操作简便,方法检出限为4.10μg·L-1。Nickel(Ⅱ) in water sample was preconcentrated by extraction of its TTA-chelate with carbon tetrachloride as solvent at pH 6.5. The extract was evaporated to remove organic solvent and the residue dissolved with dilute nitric acid. Nickel(Ⅱ) in the solution was then determined by FAAS. Working conditions of the instrument were given. The detection limit of this method was found to be 4.10μg·L^(-1). In the analysis of samples of tap water and headwater by this method, RSD′s and recoveries obtained were in the ranges of 3.9%～6.2% and 93.3%～105.0% respectively.

关 键 词：火焰原子吸收光谱法 萃取富集 镍 HTTA 

分 类 号：O657.31[理学—分析化学]