Selective extraction of chromium(VI) using a leaching procedure with sodium carbonate from some plant leaves, soil and sediment samples

Elci L., Divrikli U., Akdogan A., Hol A., Cetin A., SOYLAK M.

JOURNAL OF HAZARDOUS MATERIALS, cilt.173, ss.778-782, 2010 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 173
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.jhazmat.2009.09.005
  • Dergi Adı: JOURNAL OF HAZARDOUS MATERIALS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.778-782
  • Anahtar Kelimeler: Speciation, Chromium, Selective leaching, Plant, Soil, Sediment, SOLID-PHASE EXTRACTION, ABSORPTION SPECTROMETRIC DETERMINATION, ENVIRONMENTAL-SAMPLES, HEXAVALENT CHROMIUM, BIOLOGICAL SAMPLES, CARRIER ELEMENT, SPECIATION, CR(VI), PRECONCENTRATION, WATER
  • Erciyes Üniversitesi Adresli: Evet

Özet

Speciation of chromium in some plant leaves, soil and sediment samples was carried out by selective leaching of Cr(VI) using a sodium carbonate leaching procedure. Total chromium from the samples was extracted using aqua regia and oxidative acid digestion, respectively. The concentrations of chromium species in the extracts were determined using by graphite furnace atomic absorption spectrometry (GFAAS). Uncoated graphite furnace tubes were used as an atomizer. Due to the presence of relatively high amounts of Na(2)CO(3) in the resulting samples, the possible influences of Na(2)CO(3) on the absorbance signals were checked. There is no interference of Na(2)CO(3) on the chromium absorbance up to 0.1 mol L(-1) Na(2)CO(3). A limit of detection (LOD) for determination of Cr(VI) in 0.1 Na(2)CO(3) solution by GFAAS was found to be 0.93 mu g L(-1). The procedure was applied to environmental samples. The relative standard deviation, R.S.D. as precision for 10 replicate measurements of 20 mu L(-1) Cr in processed soil sample was 4.2%. (C) 2009 Published by Elsevier B.V.