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Title: Allocation and source attribution of lead and cadmium in maize (Zea mays L.) impacted by smelting emissions
Authors: Bi, Xiangyang
Feng, Xinbin
Yang, Yuangen
Li, Xiangdong
Shin, Grace P. Y.
Li, Feili
Qiu, Guangle
Li, Guanghui
Liu, Taoze
Fu, Zhiyou
Subjects: Lead
Pb isotopes
Atmospheric deposition
Zinc smelting
Issue Date: Mar-2009
Source: Environmental pollution, Mar. 2009, v. 157, no. 3, p. 834-839.
Abstract: Plants grown in contaminated areas may accumulate trace metals to a toxic level via their roots and/or leaves. In the present study, we investigated the distribution and sources of Pb and Cd in maize plants (Zea mays L.) grown in a typical zinc smelting impacted area of southwestern China. Results showed that the smelting activities caused significantly elevated concentrations of Pb and Cd in the surrounding soils and maize plants. Pb isotope data revealed that the foliar uptake of atmospheric Pb was the dominant pathway for Pb to the leaf and grain tissues of maize, while Pb in the stalk and root tissues was mainly derived from root uptake. The ratio of Pb to Cd concentrations in the plants indicated that Cd had a different behavior from Pb, with most Cd in the maize plants coming from the soil via root uptake.
Rights: Environmental Pollution © 2008 Elsevier. The journal web site is located at
Type: Journal/Magazine Article
DOI: 10.1016/j.envpol.2008.11.013
ISSN: 0269-7491
Appears in Collections:CEE Journal/Magazine Articles

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