Ionic liquid-based dispersive liquid-liquid microextraction and enhanced spectrophotometric determination of molybdenum (VI) in water and plant leaves samples by FO-LADS

被引：66

作者：

Gharehbaghi, Maysam ^{[1
]}

Shemirani, Farzaneh ^{[1
]}

机构：

[1] Univ Tehran, Dept Analyt Chem, Univ Coll Sci, Tehran, Iran

来源：

FOOD AND CHEMICAL TOXICOLOGY | 2011年 / 49卷 / 02期

关键词：

Ionic liquid; Dispersive liquid-liquid microextraction; Enhanced spectrophotometry; Molybdenum; Fiber optic-linear array detection spectrophotometry; Plant leaves samples; ATOMIC-ABSORPTION-SPECTROMETRY; SOLID-PHASE EXTRACTION; CLOUD POINT EXTRACTION; ENVIRONMENTAL-SAMPLES; TRACE MOLYBDENUM; PYROGALLOL-RED; PRECONCENTRATION; MERCURY; COMPLEX; SILVER;

D O I：

10.1016/j.fct.2010.11.017

中图分类号：

TS2 [食品工业];

学科分类号：

100403 [营养与食品卫生学];

摘要：

A new simple and rapid ionic liquid-based dispersive liquid-liquid microextraction (IL-DLLME) has been applied to preconcentrate trace levels of molybdenum (VI) as a prior step to its enhanced determination by fiber optic-linear array detection spectrophotometry (FO-LADS). In this method, a small amount of [Hmim][Tf2N] (1-hexy1-3-methylimmidazolium bis (trifluormethylsulfonyl) imid) as an extraction solvent was applied to extract molybdenum - pyrogallol red complex, which was formed in an aqueous solution in the presence of N-cetyl-N-N-N-trimethyl ammonium chloride as a sensitizing agent. Under optimum conditions, enhancement factor, detection limit and relative standard deviation (n = 5, for 30 mu g L-1 of molybdenum (VI)) in 10 mL water sample were 72.6, 1.43 mu g L-1 and 2.8%, respectively. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：423 / 428

页数：6

共 35 条

[1]

[Anonymous], [No title captured]

[2]

In situ solvent formation microextraction based on ionic liquids: A novel sample preparation technique for determination of inorganic species in saline solutions [J].