Colloid-facilitated Pb transport in two shooting-range soils in Florida
Identifieur interne : 000793 ( Main/Exploration ); précédent : 000792; suivant : 000794Colloid-facilitated Pb transport in two shooting-range soils in Florida
Auteurs : XIANQIANG YIN [République populaire de Chine, États-Unis] ; BIN GAO [États-Unis] ; Lena Q. Ma [États-Unis] ; Uttam Kumar Saha [États-Unis] ; Huimin Sun [République populaire de Chine, États-Unis] ; GUODONG WANG [République populaire de Chine]Source :
- Journal of hazardous materials [ 0304-3894 ] ; 2010.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Plomb, Homme, Migration, Pompe, Eau souterraine.
English descriptors
- KwdEn :
Abstract
Shooting range soils with elevated Pb contents are of environmental concern due to their adverse impacts on human and animals. In Florida, the problem merits special attention because of Florida's sandy soil, high rainfall, and shallow groundwater level, which tend to favor Pb migration. This study used large intact soil column to examine colloid-facilitated Pb transport in two Florida shooting-range soils with different physicochemical properties (e.g., organic carbon content, pH, and clay content). Simulated rainwater (SRW) was pumped through the intact soil columns under different ionic strengths (0.07 and 5 mmol L-1) and flow rates (2.67, 5.30 and 10.6 cm h-1) to mobilize Pb and soil colloids. Our results showed that colloids dominated Pb transport in both soils and there was a significant correlation between colloids and Pb in the leachates. Decreases in ionic strength and increases in flow rate enhanced the release of both colloids and Pb in the soils. Size fraction analyses showed that in OCR soils (sandy soils with low organic carbon), most of the Pb (87%) was associated with coarse colloid fraction (0.45-8 μm). However, high Pb level (66%) was found in the dissolved and nano-sized colloid fraction (<0.1 μm) in the MPR soils (sandy soils with high organic carbon). This suggests that soil properties are important to Pb migration in soils and groundwater. Our study indicated that colloids play an important role in facilitating Pb transport in shooting range soils.
Affiliations:
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Ma</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Soil and Water Science Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Saha, Uttam Kumar" sort="Saha, Uttam Kumar" uniqKey="Saha U" first="Uttam Kumar" last="Saha">Uttam Kumar Saha</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Soil and Water Science Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Sun, Huimin" sort="Sun, Huimin" uniqKey="Sun H" first="Huimin" last="Sun">Huimin Sun</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>College of Resources and Environment, Northwest A&F University</s1><s2>Yangling, Shaanxi 712100</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Yangling, Shaanxi 712100</wicri:noRegion></affiliation><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Agricultural and Biological Engineering, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Guodong Wang" sort="Guodong Wang" uniqKey="Guodong Wang" last="Guodong Wang">GUODONG WANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>College of Resources and Environment, Northwest A&F University</s1><s2>Yangling, Shaanxi 712100</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Yangling, Shaanxi 712100</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">10-0190647</idno><date when="2010">2010</date><idno type="stanalyst">PASCAL 10-0190647 INIST</idno><idno type="RBID">Pascal:10-0190647</idno><idno type="wicri:Area/PascalFrancis/Corpus">000188</idno><idno type="wicri:Area/PascalFrancis/Curation">000589</idno><idno type="wicri:Area/PascalFrancis/Checkpoint">000167</idno><idno type="wicri:doubleKey">0304-3894:2010:Xianqiang Yin:colloid:facilitated:pb</idno><idno type="wicri:Area/Main/Merge">000798</idno><idno type="wicri:Area/Main/Curation">000793</idno><idno type="wicri:Area/Main/Exploration">000793</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Colloid-facilitated Pb transport in two shooting-range soils in Florida</title><author><name sortKey="Xianqiang Yin" sort="Xianqiang Yin" uniqKey="Xianqiang Yin" last="Xianqiang Yin">XIANQIANG YIN</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>College of Resources and Environment, Northwest A&F University</s1><s2>Yangling, Shaanxi 712100</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Yangling, Shaanxi 712100</wicri:noRegion></affiliation><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Soil and Water Science Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Bin Gao" sort="Bin Gao" uniqKey="Bin Gao" last="Bin Gao">BIN GAO</name><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Agricultural and Biological Engineering, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Ma, Lena Q" sort="Ma, Lena Q" uniqKey="Ma L" first="Lena Q." last="Ma">Lena Q. Ma</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Soil and Water Science Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Saha, Uttam Kumar" sort="Saha, Uttam Kumar" uniqKey="Saha U" first="Uttam Kumar" last="Saha">Uttam Kumar Saha</name><affiliation wicri:level="2"><inist:fA14 i1="03"><s1>Soil and Water Science Department, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>4 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Sun, Huimin" sort="Sun, Huimin" uniqKey="Sun H" first="Huimin" last="Sun">Huimin Sun</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>College of Resources and Environment, Northwest A&F University</s1><s2>Yangling, Shaanxi 712100</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Yangling, Shaanxi 712100</wicri:noRegion></affiliation><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Agricultural and Biological Engineering, University of Florida</s1><s2>Gainesville, FL 32611</s2><s3>USA</s3><sZ>2 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Floride</region></placeName></affiliation></author><author><name sortKey="Guodong Wang" sort="Guodong Wang" uniqKey="Guodong Wang" last="Guodong Wang">GUODONG WANG</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>College of Resources and Environment, Northwest A&F University</s1><s2>Yangling, Shaanxi 712100</s2><s3>CHN</s3><sZ>1 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>Yangling, Shaanxi 712100</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of hazardous materials</title><title level="j" type="abbreviated">J. hazard. mater.</title><idno type="ISSN">0304-3894</idno><imprint><date when="2010">2010</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of hazardous materials</title><title level="j" type="abbreviated">J. hazard. mater.</title><idno type="ISSN">0304-3894</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Colloid particle</term><term>Correlation</term><term>Correlation analysis</term><term>Ground water</term><term>Human</term><term>Ionic strength</term><term>Leachate</term><term>Lead</term><term>Migration</term><term>Physicochemical properties</term><term>Property of soil</term><term>Pump</term><term>Rain</term><term>Rain water</term><term>Sandy soil</term><term>Shallow water</term><term>Transport process</term><term>pH</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Particule colloïdale</term><term>Plomb</term><term>Phénomène transport</term><term>Homme</term><term>Sol sableux</term><term>Pluie</term><term>Eau peu profonde</term><term>Migration</term><term>Propriété physicochimique</term><term>pH</term><term>Eau pluie</term><term>Pompe</term><term>Force ionique</term><term>Corrélation</term><term>Analyse corrélation</term><term>Lessivat</term><term>Caractéristique sol</term><term>Eau souterraine</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Plomb</term><term>Homme</term><term>Migration</term><term>Pompe</term><term>Eau souterraine</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Shooting range soils with elevated Pb contents are of environmental concern due to their adverse impacts on human and animals. In Florida, the problem merits special attention because of Florida's sandy soil, high rainfall, and shallow groundwater level, which tend to favor Pb migration. This study used large intact soil column to examine colloid-facilitated Pb transport in two Florida shooting-range soils with different physicochemical properties (e.g., organic carbon content, pH, and clay content). Simulated rainwater (SRW) was pumped through the intact soil columns under different ionic strengths (0.07 and 5 mmol L<sup>-1</sup>) and flow rates (2.67, 5.30 and 10.6 cm h<sup>-1</sup>) to mobilize Pb and soil colloids. Our results showed that colloids dominated Pb transport in both soils and there was a significant correlation between colloids and Pb in the leachates. Decreases in ionic strength and increases in flow rate enhanced the release of both colloids and Pb in the soils. Size fraction analyses showed that in OCR soils (sandy soils with low organic carbon), most of the Pb (87%) was associated with coarse colloid fraction (0.45-8 μm). However, high Pb level (66%) was found in the dissolved and nano-sized colloid fraction (<0.1 μm) in the MPR soils (sandy soils with high organic carbon). This suggests that soil properties are important to Pb migration in soils and groundwater. Our study indicated that colloids play an important role in facilitating Pb transport in shooting range soils.</div></front></TEI><affiliations><list><country><li>République populaire de Chine</li><li>États-Unis</li></country><region><li>Floride</li></region></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Xianqiang Yin" sort="Xianqiang Yin" uniqKey="Xianqiang Yin" last="Xianqiang Yin">XIANQIANG YIN</name></noRegion><name sortKey="Guodong Wang" sort="Guodong Wang" uniqKey="Guodong Wang" last="Guodong Wang">GUODONG WANG</name><name sortKey="Sun, Huimin" sort="Sun, Huimin" uniqKey="Sun H" first="Huimin" last="Sun">Huimin Sun</name></country><country name="États-Unis"><region name="Floride"><name sortKey="Xianqiang Yin" sort="Xianqiang Yin" uniqKey="Xianqiang Yin" last="Xianqiang Yin">XIANQIANG YIN</name></region><name sortKey="Bin Gao" sort="Bin Gao" uniqKey="Bin Gao" last="Bin Gao">BIN GAO</name><name sortKey="Ma, Lena Q" sort="Ma, Lena Q" uniqKey="Ma L" first="Lena Q." last="Ma">Lena Q. Ma</name><name sortKey="Saha, Uttam Kumar" sort="Saha, Uttam Kumar" uniqKey="Saha U" first="Uttam Kumar" last="Saha">Uttam Kumar Saha</name><name sortKey="Sun, Huimin" sort="Sun, Huimin" uniqKey="Sun H" first="Huimin" last="Sun">Huimin Sun</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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