In situ formed 1-hexyl-3-methylimidazolium hexafluorophosphate for dispersive liquid-liquid microextraction of Pd(II) prior to electrothermal AAS and spectrophotometry

Habibollah ESKANDARI

Makale detayları

In situ formed 1-hexyl-3-methylimidazolium hexafluorophosphate for dispersive liquid-liquid microextraction of Pd(II) prior to electrothermal AAS and spectrophotometry

Yazarlar:

Habibollah ESKANDARI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2012 Vol.36 Issue 4, pp.631-643

Belge Tipi:

Makale

Yayın Tarihi:

3/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000727604

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527

Özet:

 

1-Hexyl-3-methylimidazolium hexafluorophosphate was prepared  in situ and used as extractant in dispersive liquid-liquid  microextraction.  Ultra-trace amounts of Pd(II) could be accurately  determined by electrothermal atomic absorption spectrometry (ETAAS)  and spectrophotometry after extraction by the formed micro-droplets of  the ionic liquid phase.  1-(2-Pyridylazo)-2-naphthol was used to  produce a hydrophobic palladium complex prior to extraction.  The  effects of concentrations of reagents, reaction and extraction times,  and the other parameters were investigated and optimized.  Beer's law  was obeyed in the ranges of 0.015-0.900 and 1.50-63.0 ng mL-1  Pd(II) by ETAAS and spectrophotometry, respectively.  Under the  optimized conditions, the limit of detection (LOD) by ETAAS was 3 ng  L-1 with an enrichment factor of 460.  The RSD percent was in the  range of 1.3%-4.8% for various standard concentrations of Pd(II) in  the range of 0.050-40.0 ng mL-1.  Most ions did not interfere.  The  method was successfully applied to the determination of Pd(II) in some  water and alloy samples, jewels, and palladium catalysts.

 

1-Hexyl-3-methylimidazolium hexafluorophosphate was prepared  in situ and used as extractant in dispersive liquid-liquid  microextraction.  Ultra-trace amounts of Pd(II) could be accurately  determined by electrothermal atomic absorption spectrometry (ETAAS)  and spectrophotometry after extraction by the formed micro-droplets of  the ionic liquid phase.  1-(2-Pyridylazo)-2-naphthol was used to  produce a hydrophobic palladium complex prior to extraction.  The  effects of concentrations of reagents, reaction and extraction times,  and the other parameters were investigated and optimized.  Beer's law  was obeyed in the ranges of 0.015-0.900 and 1.50-63.0 ng mL-1  Pd(II) by ETAAS and spectrophotometry, respectively.  Under the  optimized conditions, the limit of detection (LOD) by ETAAS was 3 ng  L-1 with an enrichment factor of 460.  The RSD percent was in the  range of 1.3%-4.8% for various standard concentrations of Pd(II) in  the range of 0.050-40.0 ng mL-1.  Most ions did not interfere.  The  method was successfully applied to the determination of Pd(II) in some  water and alloy samples, jewels, and palladium catalysts.

Makale detayları

In situ formed 1-hexyl-3-methylimidazolium hexafluorophosphate for dispersive liquid-liquid microextraction of Pd(II) prior to electrothermal AAS and spectrophotometry

Yazarlar: Habibollah ESKANDARI

Yayıncı: TUBITAK

Dergi: Turkish Journal of Chemistry 2012 Vol.36 Issue 4, pp.631-643

Belge Tipi: Makale

Yayın Tarihi: 3/2012

Belge Dili: Türkçe

Document ID (Org No.): 2000727604

Sıklık: İki Aylık

eISSN: 1303-6130

pISSN: 1300-0527

Sayı

Yazarlar:

Habibollah ESKANDARI

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Chemistry 2012 Vol.36 Issue 4, pp.631-643

Belge Tipi:

Makale

Yayın Tarihi:

3/2012

Belge Dili:

Türkçe

Document ID (Org No.):

2000727604

Sıklık:

İki Aylık

eISSN:

1303-6130

pISSN:

1300-0527