NDLI: Soil heavy-metal speciation and wheat phytotoxicity in the vicinity of an abandoned lead

Content Provider	Springer Nature Link
Author	Cui, Yanshan Du, Xin
Copyright Year	2010
Abstract	Sixteen soil samples were collected from the vicinity of an abandoned lead–zinc mine in Shangyu City, eastern China, and the heavy-metal speciation and wheat phytotoxicity in the soils were studied. The results showed that the concentrations of free Cu$^{2+}$, Zn$^{2+}$, Cd$^{2+}$ and Pb$^{2+}$ were highly variable and ranged from <0.01 to 0.32, 0.06 to 10.62, <0.01 to 1.40 and 0.02 to 37.10 μmol l$^{−1}$, respectively. The concentrations of soluble Cu, Zn, Cd and Pb ranged from 0.38 to 3.24, 0.72 to 78.74, <0.01 to 1.95 and 0.15 to 639.34 μmol l$^{−1}$, respectively. The general trend of mean solid/liquid partition coefficient and percentage of free metal ion to total soluble metal concentration were Cu > Pb > Zn > Cd and Cd > Zn > Cu > Pb, respectively. Stepwise multiple linear regression with pH, log(total metal) and log(organic matter) showed that log(total metal) was an important factor that controlled log(free metal ion) and log(soluble metal). Of the variability in log(free Cu$^{2+}$), log(free Cd$^{2+}$) and log(free Pb$^{2+}$), 55.2, 58.6 and 64.3% could be explained by log(total Cu), log(total Cd) and log(total Pb) alone, respectively. Of the variability in log(soluble Cu) and log(soluble Cd), 77.1 and 72.5% could be explained by log(total Cu) and log(total Cd) alone, respectively. Wheat root length was controlled by the various metals with different free and soluble concentrations, and 99.2% of the variability in root length could be explained by concentrations of free and soluble Pb, soluble Cu and total Zn in the soils.
Starting Page	257
Ending Page	264
Page Count	8
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	62
Issue Number	2
e-ISSN	18666299
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-03-27
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Heavy metals Speciation Phytotoxicity Mining area Geology
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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