Tsvetomil VOYSLAVOV, Stefan TSAKOVSKI, Sonya GANEVA

83101

Determination of hexavalent chromium in aqueous and alkaline soil extracts

A fast, simple, and reliable method for determination of hexavalent chromium species in soil aqueous and alkaline extracts has been developed. The procedure is based on the ion-pair extraction of Cr(VI) with methyltrioctylammonium chloride (Aliquat 336) into xylene. The extract is analyzed by flame (FAAS) or electrothermal atomic absorption spectrometry (ETAAS). The method allows the detection of up to 2 mg kg$^{-1}$ Cr(VI) by FAAS and up to 25 $\mu $g kg$^{-1}$ Cr(VI) by ETAAS. The relative standard deviation varied in the range 2%-12% depending on the Cr(VI) levels in the samples. The analysis of certified reference material CRM041-30G Chromium VI--Soil and spike experiments showed recoveries from 91% to 106%. The procedure was applied to industrially polluted soils.
Keywords:

Soil, liquid phase extraction Cr(VI), flame atomic absorption spectrometry, electrothermal atomic absorption spectrometry,

PDF
Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: 6
  • Yayıncı: TÜBİTAK
Arşiv
Sayıdaki Diğer Makaleler

Analytical capabilities of two-phase hollow- ber liquid phase microextraction fortrace multielement determination in aqueous samples by means of portable totalre ection X-ray instrumentation

Manuela HIDALGO, Eva MARGU

Development of a method for the determination of cadmium levels in seawater by ame atomic absorption spectrometry using an online cloud-point extractionsystem

Graziele Santos SALES, Rebeca Moraes MENEZES, Valfredo Azevedo LEMOS, Rafael Vasconcelos OLIVEIRA, Uelber Silva VIEIRA, Mardson Vasconcelos MACIEL, Thais Souza NERI

Chromate surface-imprinted silica gel sorbent for speciation of Cr in surfacewaters

Mariya MITREVA, Tanya YORDANOVA, Irina KARADJOVA, Ivanka DAKOVA

Chromium redox speciation in food samples

Krystyna PYRZYNSKA

Latest trends, green aspects, and innovations in liquid-phase{basedmicroextraction techniques: a review

Erkan YILMAZ, Mustafa SOYLAK

Spectrophotometric determination of mercury using vortex-assisted liquid{liquidmicroextraction

Tatiana ANTOLOVA, Serhii ZARUBA, Jana SANDREJOVA, Livia KOCUROVA, Andriy B. VISHNIKIN, Yaroslav BAZEL, Vasil ANDRUCH, Ioseph S. BALOGH

Mariya MITREVA, İvanka DAKOVA, Tanya YORDANOVA, İrina KARADJOVA

Solidi ed oating organic drop microextraction for speciation of Se (IV) and Se(VI) in water samples prior to electrothermal atomic absorption spectrometricdetection

Mustafa TÜZEN, Demirhan ÇITAK

Determination of hexavalent chromium in aqueous and alkaline soil extracts

Tsvetomil VOYSLAVOV, Sonya GANEVA, Stefan TSAKOVSKI

Speciation of trace metals and metalloids by solid phase extraction withspectrometric detection: a critical review

Ali Rehber TÜRKER