Determination of hexavalent chromium by species specific isotope dilution mass spectrometry and ion chromatography–1,5-diphenylcarbazide spectrophotometry

Tirez, Kristof; Brusten, Wilfried; Cluyts, Annick; Patyn, Johan; Brucker, Nicole De

doi:10.1039/b302313c

Cited by 47 publications

(27 citation statements)

References 26 publications

(51 reference statements)

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“…Total chromium was estimated by atomic absorption spectrophotometry (SensAA GBC) and hexavalent chromium was determined by 1,5‐diphenylcarbazide method . Trivalent chromium was calculated by subtracting Cr(VI) from total chromium.…”

Section: Methodsmentioning

confidence: 99%

Efficacy of Aspergillus fumigatus MCC 1175 for Bioremediation of Tannery Wastewater

Chaudhary

Beniwal

Kaur

et al. 2019

CLEAN Soil Air Water

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Tannery effluent is characterized by high concentrations of chromium, nitrogen, sulfur compounds, and organic matter such as tannins. Chromium and tannins are considered an important source of contamination due to their toxic nature and large volume of liquid discharged and solid sludge produced. In the present study, bioremediation of chromium and tannic acid is studied in a batch culture system using response surface methodology. Scanning electron microscopy (SEM) coupled with energy‐dispersive X‐ray (EDX) and Fourier‐transform infrared spectroscopy (FTIR) are used to investigate adsorption phenomena. A chromium and tannic acid resistance fungal strain is isolated from tannery effluent, and identified as Aspergillus fumigatus MCC 1175 based on its 18S rDNA gene sequence. The minimum inhibitory condition (MIC) of the isolate against chromium and tannic acid was found to be 0.2 and 10 mg mL−1, respectively. The maximum Cr(VI) removal efficiency of 65.1% is found at optimum condition of pH 7, 96 h incubation period, 2.75% inoculum, and 0.1 mg mL−1 chromium. The maximum degradation of tannic acid (63.0%) occurs at pH 5, 27.5 mg mL−1 tannic acid, 100 rpm agitation speed, and an incubation period of 96 h. FTIR analysis of A. fumigatus MCC 1175 revealed the presence of carboxyl and phosphate groups as possible binding sites.

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Section: Methodsmentioning

confidence: 99%

Efficacy of Aspergillus fumigatus MCC 1175 for Bioremediation of Tannery Wastewater

Chaudhary

Beniwal

Kaur

et al. 2019

CLEAN Soil Air Water

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show abstract

“…Method EPA 3060A 4 is considered one of most reliable extraction methods, allowing the quantitative extraction of total Cr(VI) from soils and prevention of Cr(III)-Cr(VI) interconversion. 5,6 For selective determination of Cr(VI) in soils several ion-chromatography methods connected with UV-visible, conductivity, or inductively coupled plasma mass spectrometry (ICP-MS) detection have been proposed. 4,7,8 These procedures are limited by laboratory available instrumentation.…”

Section: Introductionmentioning

confidence: 99%

Determination of hexavalent chromium in aqueous and alkaline soil extracts

Voyslavov¹,

Tsakovski²,

Ganeva³

2016

Turk J Chem

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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 µ 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.

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“…Up to now, the most widely used separation techniques for the elemental speciation include high-performance liquid chromatography (HPLC) [7], gas chromatography (GC) [8], ion chromatography (IC) [9], capillary electrophoresis (CE) [10], solvent extraction [11], solid phase extraction [12], coprecipitation [13] and voltammetry method [14]. Solid phase microextraction (SPME), as a novel sample pretreatment technique for elemental speciation by GC-ICP-MS [15,16], was also directly coupled with ICP-MS for the speciation of various elemental species in biological and environmental samples [17,18].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous separation and speciation of inorganic As(III)/As(V) and Cr(III)/Cr(VI) in natural waters utilizing capillary microextraction on ordered mesoporous Al2O3 prior to their on-line determination by ICP-MS

Hu¹,

Zheng²,

Hu³

2008

Journal of Hazardous Materials

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Determination of hexavalent chromium by species specific isotope dilution mass spectrometry and ion chromatography–1,5-diphenylcarbazide spectrophotometry

Cited by 47 publications

References 26 publications

Efficacy of Aspergillus fumigatus MCC 1175 for Bioremediation of Tannery Wastewater

Efficacy of Aspergillus fumigatus MCC 1175 for Bioremediation of Tannery Wastewater

Determination of hexavalent chromium in aqueous and alkaline soil extracts

Simultaneous separation and speciation of inorganic As(III)/As(V) and Cr(III)/Cr(VI) in natural waters utilizing capillary microextraction on ordered mesoporous Al2O3 prior to their on-line determination by ICP-MS

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