Chromium speciation in river sediment pore water contaminated by tannery effluent

Burbridge, David J.; Koch, Iris; Zhang, Jun; Reimer, Kenneth J.

doi:10.1016/j.chemosphere.2012.05.005

Cited by 37 publications

(19 citation statements)

References 31 publications

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“…The site of interest was "the property of a large former tannery, into which Cr-contaminated effluent was discharged over a 55-year period, and where extremely high Cr concentrations have been found in the sediments." Analysis revealed the absence of Cr(VI) species, suggesting the ubiquitous presence of reductants in sediments [179].…”

Section: Treatment Of Tanning Wastesmentioning

confidence: 99%

“…This difficulty did not deter efforts by Burbridge et al . to investigate chromium speciation in pore waters of river sediments in Lake Ontario (Ontario, Canada). The site of interest was “the property of a large former tannery, into which Cr‐contaminated effluent was discharged over a 55‐year period, and where extremely high Cr concentrations have been found in the sediments.” Analysis revealed the absence of Cr(VI) species, suggesting the ubiquitous presence of reductants in sediments .…”

Section: Description Of Treatment Technologiesmentioning

confidence: 99%

“…and Cr(VI) species were present in tannery waste; however, in practice, it was difficult to determine the entire speciation profile, qualitatively and quantitatively, as chromium species were distributed amongst many phases, including colloidal materials. This difficulty did not deter efforts by Burbridge et al [179] to investigate chromium speciation in pore waters of river sediments in Lake Ontario (Ontario, Canada). The site of interest was "the property of a large former tannery, into which Cr-contaminated effluent was discharged over a 55-year period, and where extremely high Cr concentrations have been found in the sediments."…”

Section: Treatment Of Tanning Wastesmentioning

confidence: 99%

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Separation of transition metals and chelated complexes in wastewaters

Cheung

2014

Env Prog and Sustain Energy

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This review responds to the ongoing needs of wastewater engineers tasked with treating aqueous solutions containing chelated complexes of metal ions, of which nickel citrate in electrodeless plating and copper–EDTA in electronic chip board manufacturing are two key examples. Because of the presence of these sequestering agents, metallic ions cannot be readily precipitated by alkalinity, making a compelling case for the discovery of alternative methods of treatment. This review is a critical appraisal of the varying degrees of success in separation process strategies deployed for the recovery of metallic ions under such challenging chemical conditions. Guidance is provided on making progress toward satisfactory industrial solutions to surmount these difficulties. © 2014 American Institute of Chemical Engineers Environ Prog, 34: 761–783, 2015

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Section: Treatment Of Tanning Wastesmentioning

confidence: 99%

Section: Description Of Treatment Technologiesmentioning

confidence: 99%

Section: Treatment Of Tanning Wastesmentioning

confidence: 99%

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Separation of transition metals and chelated complexes in wastewaters

Cheung

2014

Env Prog and Sustain Energy

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“…Indeed, to minimize contamination, losses of chromium species or redox conversion, and to gain specificity, it is now well admitted that the on-line coupling between HPLC and a highly sensitive detector such as ICP MS is the methodology of choice. This coupling has received the most attention for Cr speciation in the last decade in samples like water [15,16], sediments [17], workplace atmospheres [18], cements [19,20], corrosive preventive coatings [21], or materials used in the automotive industry [22].…”

Section: Introductionmentioning

confidence: 99%

Cr(VI) speciation in foods by HPLC-ICP-MS: investigation of Cr(VI)/food interactions by size exclusion and Cr(VI) determination and stability by ion-exchange on-line separations

2015

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A method has been developed for the specific and sensitive determination of Cr(VI) in foods. First, the interactions between Cr(VI) and the matrices were investigated by size-exclusion HPLC-ICP-MS (SEC-ICP-MS). Evidence was found for the complexation of Cr(VI) potentially present with the ligands. For quantification of Cr(VI), the method was based on an alkaline extraction (NH4OH solution at pH 11.5) followed by Cr(VI) determination by anion-exchange HPLC-ICP-MS. Analytical performances of the method were satisfactory in terms of linearity, specificity, accuracy, repeatability, and intermediate precision. Detection limits ranged from 1 to 10 μg/kg, depending on the matrices investigated. The method was then applied for the determination of Cr(VI) in several products (dairy products, flour, chocolate, vegetables, fruits, meat, fish, eggs, and beverages) from different brands and origins. Cr(VI) was found in none of the samples investigated. To further investigate the reason for this absence, a stability study of spiked Cr(VI) was therefore conducted. A semi-skimmed cow milk was selected for this study. Cr(VI) was shown to be unstable in this matrix with a degradation rate increasing with the temperature.

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“…The quantification of both Cr(III) and Cr(VI) simultaneously remains a challenge because the high reactivity of Cr(III) and the presence of interfering ions and substances, such as, carbonate, chloride, and humic acid, which could dramatically interfere with the chromatographic separation of Cr(III) (Seby et al, 2003). Complimentary methods have been tested to cope with the difficulties in speciation of Cr(VI) and Cr(III) in pore water samples contaminated by tannery effluent (Burbridge et al, 2012). …”

Section: Intoductionmentioning

confidence: 99%

Occurrence and speciation of polymeric chromium(III), monomeric chromium(III) and chromium(VI) in environmental samples

Cai

Jiang

2016

Chemosphere

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Laboratory experiments suggest that polymeric Cr(III) could exist in aqueous solution for a relative long period of time. However, the occurrence of polymeric Cr(III) has not been reported in environmental media due partially to the lack of method for speciating polymeric Cr. We observed an unknown Cr species during the course of study on speciation of Cr in the leachates of chromated-copper-arsenate (CCA)-treated wood. Efforts were made to identify structure of the unknown Cr species. Considering the forms of Cr existed in the CCA-treated woods, we mainly focused our efforts to determine if the unknown species were polymeric Cr(III), complex of Cr/As or complex of Cr with dissolved organic matter (DOM). In order to evaluate whether polymeric Cr(III) largely exist in wood leachates, high performance liquid chromatography coupled with inductively coupled mass spectrometry (HPLC-ICPMS was used) for simultaneous speciation of monomeric Cr(III), polymeric Cr(III), and Cr(VI). In addition to wood leachates where polymeric Cr (III) ranged from 39.1 to 67.4 %, occurrence of the unknown Cr species in other environmental matrices, including surface waters, tap and waste waters, was also investigated. It was found that polymeric Cr(III) could exist in environmental samples containing μg/L level of Cr, at a level up to 60% of total Cr, suggesting that polymeric Cr(III) could significantly exist in natural environments. Failure in quantifying polymeric Cr(III) would lead to the underestimation of total Cr and bias in Cr speciation. The environmental implication of the presence of polymeric Cr(III) species in the environment deserves further study.

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Chromium speciation in river sediment pore water contaminated by tannery effluent

Cited by 37 publications

References 31 publications

Separation of transition metals and chelated complexes in wastewaters

Separation of transition metals and chelated complexes in wastewaters

Cr(VI) speciation in foods by HPLC-ICP-MS: investigation of Cr(VI)/food interactions by size exclusion and Cr(VI) determination and stability by ion-exchange on-line separations

Occurrence and speciation of polymeric chromium(III), monomeric chromium(III) and chromium(VI) in environmental samples

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