Ionic liquid-based single drop microextraction combined with electrothermal atomic absorption spectrometry for the determination of manganese in water samples

Talanta ◽  
2009 ◽  
Vol 77 (4) ◽  
pp. 1539-1544 ◽  
Author(s):  
J MANZOORI ◽  
M AMJADI ◽  
J ABULHASSANI
Keyword(s):  
Ionic Liquid ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Water Samples ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Single Drop ◽  
Single Drop Microextraction

scholarly journals Ionic Liquid-Based, Single-Drop Microextraction for Preconcentration of Cobalt Before Its Determination by Electrothermal Atomic Absorption Spectrometry

2010 ◽  
Vol 93 (3) ◽  
pp. 985-991 ◽  
Author(s):  
Mohammad Amjadi ◽  
Jamshid L Manzoori ◽  
Jafar Abulhassani
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Single Drop ◽  
Drop Volume ◽  
Experimental Conditions ◽  
Several Variables ◽  
Single Drop Microextraction

Abstract An effective and environmentally friendly single-drop microextraction method was developed for the preconcentration of ultratraces of cobalt before its determination by electrothermal atomic absorption spectrometry (ETAAS). A microdrop of 1-hexyl-3-methylimidazolium hexafluorophosphate, [C6MIM][PF6], was used to extract Co(II) ions as an ammonium pyrroldinedithiocarbamate (APDC) complex. The sensitivity was improved by increasing the volume of the suspended drop. Several variables affecting microextraction efficiency and the ETAAS signalsuch as pyrolysis and atomization temperature, pH, APDC concentration, extraction time, drop volume, and stirring ratewere investigated and optimized. Under the optimum experimental conditions, the detection limit (3 SD) was 0.04 g/L, and the enrichment factor was 120. The RSD for five replicate determinations of Co(II) at 0.5 g/L was 4.5. The developed method was validated by analysis of a Standard Reference Material and applied to the determination of cobalt in water samples.

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