PHYTOAVAILABILITY AND CHEMICAL SPECIATION OF Cd IN DIFFERENT Cd-CONTAMINATED SOILS WITH CROP STRAW INCORPORATION

Straw returning is an important way to increase soil organic matter. Pot experiment under greenhouse conditions was conducted to investigate the phytoavailability and chemical speciation of cadmium(Cd) in two different types of Cd contaminated soil with crop straw incorporation. Results indicated th...

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Veröffentlicht in:Fresenius environmental bulletin 2022-03, Vol.31 (3A), p.3194
Hauptverfasser: Chen, Jie, Xu, Zhao, Li, Yongliang, Yao, Qixing, Rui, Yukui, Su, Dechun
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container_issue 3A
container_start_page 3194
container_title Fresenius environmental bulletin
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creator Chen, Jie
Xu, Zhao
Li, Yongliang
Yao, Qixing
Rui, Yukui
Su, Dechun
description Straw returning is an important way to increase soil organic matter. Pot experiment under greenhouse conditions was conducted to investigate the phytoavailability and chemical speciation of cadmium(Cd) in two different types of Cd contaminated soil with crop straw incorporation. Results indicated that uptake of Cd by maize was increased by crop straw incorporated into both natural Cd-contaminated soil and artificial Cd-contaminated soil. Crop straw incorporation also increased soil pH and dissolved organic carbon(DOC). Meanwhile the water soluble Cd concentration was increased in natural Cd-contaminated soil but decreased in artificial Cdcontaminated soil when the soil DOC increased. Majority of Cd existed in exchangeable fraction, but the concentration of Cd in exchangeable fraction reduced significantly with crop straw incorporated into both the two types of Cd-contaminated soil. Carbonate Cd concentration was increased in artificial Cd-contaminated soil. Therefore, crop straw incorporation may be a workable way to remediate soil, but the potential risk should be evaluated.
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Pot experiment under greenhouse conditions was conducted to investigate the phytoavailability and chemical speciation of cadmium(Cd) in two different types of Cd contaminated soil with crop straw incorporation. Results indicated that uptake of Cd by maize was increased by crop straw incorporated into both natural Cd-contaminated soil and artificial Cd-contaminated soil. Crop straw incorporation also increased soil pH and dissolved organic carbon(DOC). Meanwhile the water soluble Cd concentration was increased in natural Cd-contaminated soil but decreased in artificial Cdcontaminated soil when the soil DOC increased. Majority of Cd existed in exchangeable fraction, but the concentration of Cd in exchangeable fraction reduced significantly with crop straw incorporated into both the two types of Cd-contaminated soil. Carbonate Cd concentration was increased in artificial Cd-contaminated soil. Therefore, crop straw incorporation may be a workable way to remediate soil, but the potential risk should be evaluated.</description><identifier>ISSN: 1018-4619</identifier><identifier>EISSN: 1610-2304</identifier><language>eng</language><publisher>Freising: Parlar Scientific Publications</publisher><subject>Cadmium ; Chemical speciation ; Crops ; Dissolved organic carbon ; Incorporation ; Organic matter ; Organic soils ; Soil chemistry ; Soil contamination ; Soil organic matter ; Soil pH ; Soil pollution ; Soil remediation ; Soils ; Speciation ; Straw</subject><ispartof>Fresenius environmental bulletin, 2022-03, Vol.31 (3A), p.3194</ispartof><rights>Copyright Parlar Scientific Publications Mar 2022</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784</link.rule.ids></links><search><creatorcontrib>Chen, Jie</creatorcontrib><creatorcontrib>Xu, Zhao</creatorcontrib><creatorcontrib>Li, Yongliang</creatorcontrib><creatorcontrib>Yao, Qixing</creatorcontrib><creatorcontrib>Rui, Yukui</creatorcontrib><creatorcontrib>Su, Dechun</creatorcontrib><title>PHYTOAVAILABILITY AND CHEMICAL SPECIATION OF Cd IN DIFFERENT Cd-CONTAMINATED SOILS WITH CROP STRAW INCORPORATION</title><title>Fresenius environmental bulletin</title><description>Straw returning is an important way to increase soil organic matter. Pot experiment under greenhouse conditions was conducted to investigate the phytoavailability and chemical speciation of cadmium(Cd) in two different types of Cd contaminated soil with crop straw incorporation. Results indicated that uptake of Cd by maize was increased by crop straw incorporated into both natural Cd-contaminated soil and artificial Cd-contaminated soil. Crop straw incorporation also increased soil pH and dissolved organic carbon(DOC). Meanwhile the water soluble Cd concentration was increased in natural Cd-contaminated soil but decreased in artificial Cdcontaminated soil when the soil DOC increased. Majority of Cd existed in exchangeable fraction, but the concentration of Cd in exchangeable fraction reduced significantly with crop straw incorporated into both the two types of Cd-contaminated soil. Carbonate Cd concentration was increased in artificial Cd-contaminated soil. 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subjects Cadmium
Chemical speciation
Crops
Dissolved organic carbon
Incorporation
Organic matter
Organic soils
Soil chemistry
Soil contamination
Soil organic matter
Soil pH
Soil pollution
Soil remediation
Soils
Speciation
Straw
title PHYTOAVAILABILITY AND CHEMICAL SPECIATION OF Cd IN DIFFERENT Cd-CONTAMINATED SOILS WITH CROP STRAW INCORPORATION
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