Specific Procedure for Metal Solid Speciation in Heavily Polluted River Sediments

Rauret, G.; Rubio, R.; López-Sánchez, José Fermı́n; Casassas, E.

doi:10.1080/03067318908028382

Cited by 79 publications

(42 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…If the concentration of metal is too high, the efficiency of the fraction may be reduced, as reported for lead (Staelens, et al, 2000;Rauret, et al, 1989). Since the Fe concentration is very high the sequential extraction may be less effective with other fractionations.…”

Section: Discussionmentioning

confidence: 99%

“…Later, Karbassi, et al (2006) reported that higher elemental concentrations have been observed in estuarine zone when compared with riverine sediments (except for Al, Fe, Pb and Mn). Saeedi, et al, (2004) reported the potential of reverine suspended particulate matter and bottom sediments in adsorbing dissolved metals like Cd, Mn. Ni, Cu, Zn.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Speciation of heavy metals in electroplating industry sludge and wastewater residue using inductively coupled plasma

Venkateswaran

Vellaichamy

Palanivelu

2007

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

ABSTRACT:The speciation of metals in environmental samples is a critical factor in assessing the potential environmental impacts, before their disposal. The distribution and speciation of toxic heavy metals in plating wastewater residues and sludge was investigated for four samples using sequential extraction method. Tessier method was used to fractionate the metal content into exchangeable, acid extractable, reducible and oxidizable fractions. Residual and total metal contents were determined in aqua regia digest. The extracts were analysed for metals using inductively coupled plasma -atomic emission spectrometry. The bioavailable fraction (exchangeable and acid extractable fractions) is comprised less than the other forms. The oxidisable and reducible forms are dominants for all the four samples studied. The major metal constitute in the samples is iron, the wastewater residue contains (12.3 and 7.4 g/Kg respectively on dry basis) and the sludge contains (31.5 and 41.6 g /Kg) respectively. Cr concentration is higher in wastewater residue of second electroplating industry. The descending order of the average total metal contents for these four samples were Fe > Cr > Sn > Zn >Cu > Ni > Mn > Pb > Cd > Ag. Based on the average of absolute values for the four samples the highest bioavailability order of metals is Cr (39 %) in wastewater residues and Zn (32 %) in sludge samples. Metal recovery was good, with < 10 % difference between the total metal recovered through the extractant steps and the total metal determined using aqua regia extract.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Speciation of heavy metals in electroplating industry sludge and wastewater residue using inductively coupled plasma

Venkateswaran

Vellaichamy

Palanivelu

2007

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Iron was the predominant metal in these samples and 80% of the Fe is in residual form, followed by reducible and oxidizable. If the concentration of the metal is too high, the efficiency of the fractionation may be reduced, as reported for Pb (Staelens et al, 2000;Rauret et al, 1989). Since Fe concentration is very high the sequential extraction may be less effective with other fractionations.…”

Section: Ironmentioning

confidence: 99%

Assessment of heavy metal species in decomposed municipal solid waste

Esakku

Selvam

Joseph

et al. 2005

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

Heavy metal speciation studies on municipal solid waste samples collected from Kodungaiyur dumpsite in Chennai, India, were carried out for Cu, Ni, Pb, Zn, Cr, Fe, Mn and Cd. Three samples were collected at depths of 0 -1 m, 1 -2 m and 2 -3 m, and analyzed. X-ray diffraction studies showed the presence of montmorillonite, illite, quartz and calcium carbonate minerals. The Tessier method was used to fractionate the metal content into exchangeable, acid extractable, reducible and oxidizable fractions. Residual and total metal contents were determined in the aqua regia digest. Iron was the major metal constituent (20 g kg À1 ) while the lowest metal concentration was found for cadmium (3 mg kg À1 ). Descending order of the average total metal contents for these three depth levels was Fe, Cu, Zn, Cr, Mn, Pb, Ni and Cd. The bioavailable fraction (exchangeable and acid extractable fractions) comprised less than 40% of the total metal content for all the metals studied, except Cd. Most of the Fe and Cr were found to be associated with the residual fraction, which is almost inert. Based on the average of absolute values for the three depth levels, the bioavailability order of metals is Zn4Mn4Pb4Ni4Cu4Fe4Cr4Cd. Recovery obtained by comparing the aqua regia extracted metal content with the sum of sequentially extracted fractions was in the range of 91 -110%.

show abstract

“…Though several batch and sequential extraction schemes exist for assessing the various species of metals in soils (Gupta and Chen, 1975;McLaren and Crawford, 1973;Stover et al, 1976;Tessier et al, 1979;Welte et al, 1983;Chao, 1984;Clevenger, 1990;Shuman, 1985;Rauret et al, 1989;Oviasogie and Ukpebor, 2003), the usefulness or otherwise of these extraction schemes is dependent to a large extent on the final use of the data acquired.…”

Section: Introductionmentioning

confidence: 99%

Screening and speciation of heavy metal contaminated soil from an automobile spare-parts market

Asagba

Okieimen

Osokpor

2007

Chemical Speciation & Bioavailability

View full text Add to dashboard Cite

The contributions of automobile spare-parts market activities to heavy metals burden and the forms in which some of these metals exist in the soil environment were assessed. Total values of 150.0 mgykg lead, 98.7 mgykg copper, 5.0 mgykg cadmium, 250.3 mgykg manganese, and 14.0 mgykg nickel were obtained on screening the soil in an automobile spare-parts market. Only lead, cadmium and copper were above threshold values and were consequently speciated. Upon speciating, 6.2% lead, 25.7% copper and 52.0% cadmium were potentially bioavailable.

show abstract

Specific Procedure for Metal Solid Speciation in Heavily Polluted River Sediments

Cited by 79 publications

References 11 publications

Speciation of heavy metals in electroplating industry sludge and wastewater residue using inductively coupled plasma

Speciation of heavy metals in electroplating industry sludge and wastewater residue using inductively coupled plasma

Assessment of heavy metal species in decomposed municipal solid waste

Screening and speciation of heavy metal contaminated soil from an automobile spare-parts market

Contact Info

Product

Resources

About