DC Field | Value | Language |
---|---|---|
dc.contributor.author | Neculita, Carmen Mihaela | ko |
dc.contributor.author | Zagury, GJ | ko |
dc.contributor.author | Deschenes, L | ko |
dc.date.accessioned | 2009-09-02T07:08:26Z | - |
dc.date.available | 2009-09-02T07:08:26Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2005 | - |
dc.identifier.citation | JOURNAL OF ENVIRONMENTAL QUALITY, v.34, no.1, pp.255 - 262 | - |
dc.identifier.issn | 0047-2425 | - |
dc.identifier.uri | http://hdl.handle.net/10203/10939 | - |
dc.description.abstract | A four-step novel sequential extraction procedure (SEP) was developed to assess Hg fractionation and mobility in three highly contaminated soils from chlor-alkali plants (CAPs). The SEP was validated using a certified reference material (CRM) and pure Hg compounds. Total, volatile, and methyl Hg concentrations were also determined using single extractions. Mercury was separated into four fractions defined as water-soluble (F1), exchangeable (F2) (0.5 M NH(4)Ac-EDTA and 1 M CaCl(2) were tested), organic (F3) (successive extractions with 0.2 M NaOH and CH(3)COOH 4% [v/v]), and residual (F4) (HNO(3) + H(2)SO(4) + HClO(4)). The soil characterization revealed extremely contaminated (295 +/- 18 to 11500 +/- 500 mg Hg kg(-1)) coarse-grained sandy soils having an alkaline pH (7.9-9.1), high chloride concentrations (5-35 ing kg(-1)), and very low organic carbon content (0.00-18.2 g kg(-1)). Methyl Hg concentrations were low (0.2-19.3 mug kg(-1)) in all soils. Sequential extractions indicated that the majority of the Hg was associated with the residual fraction (F4). In Soils I and 3, however, high percentages (88-98%) of the total Hg were present as volatile Hg. Therefore, in these two soils, a high proportion of volatile Hg was present in the residual fraction. The nonresidual fraction (F1 + F2 + F3) was most abundant in Soil 1 (14-42%), suggesting a higher availability of Hg in this soil. The developed and validated SEP was reproducible and efficient for highly contaminated samples. Recovery ranged between 93 and 98% for the CRM and 70 and 130% for the CAP-contaminated soils. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Amer Soc Agronomy | - |
dc.subject | SEQUENTIAL EXTRACTIONS | - |
dc.subject | YATSUSHIRO SEA | - |
dc.subject | SEDIMENTS | - |
dc.subject | MOBILITY | - |
dc.subject | AVAILABILITY | - |
dc.subject | GENOTOXICITY | - |
dc.subject | ADSORPTION | - |
dc.subject | PYROLYSIS | - |
dc.subject | POLLUTION | - |
dc.subject | PITFALLS | - |
dc.title | Mercury speciation in highly contaminated soils from chlor-alkali plants using chemical extractions | - |
dc.type | Article | - |
dc.identifier.wosid | 000226428200027 | - |
dc.identifier.scopusid | 2-s2.0-12344292823 | - |
dc.type.rims | ART | - |
dc.citation.volume | 34 | - |
dc.citation.issue | 1 | - |
dc.citation.beginningpage | 255 | - |
dc.citation.endingpage | 262 | - |
dc.citation.publicationname | JOURNAL OF ENVIRONMENTAL QUALITY | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Neculita, Carmen Mihaela | - |
dc.contributor.nonIdAuthor | Zagury, GJ | - |
dc.contributor.nonIdAuthor | Deschenes, L | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | SEQUENTIAL EXTRACTIONS | - |
dc.subject.keywordPlus | YATSUSHIRO SEA | - |
dc.subject.keywordPlus | SEDIMENTS | - |
dc.subject.keywordPlus | MOBILITY | - |
dc.subject.keywordPlus | AVAILABILITY | - |
dc.subject.keywordPlus | GENOTOXICITY | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | PYROLYSIS | - |
dc.subject.keywordPlus | POLLUTION | - |
dc.subject.keywordPlus | PITFALLS | - |
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