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Influence of phosphate amendment and zinc foliar application on heavy metal accumulation in wheat and on soil extractability impacted by a lead smelter near Jiyuan, China.
Environ Sci Pollut Res Int. 2018 Nov; 25(31):31396-31406.ES

Abstract

Higher concentrations of Pb and Cd in wheat grains harvested in several lead-smelting-polluted areas in northern China have been reported. This field experiment was conducted to investigate the effect of phosphate amendment and Zn foliar application on the accumulation of Pb and Cd in wheat grains grown in a lead-smelting impacted area in Jiyuan in northern China. The soil (total Pb and Cd are 261 and 2.65 mg kg-1, respectively) was amended with superphosphate at P:Pb ratios (mol:mol) of 1.90 or 2.57 either during wheat (Triticum aestivum L.) planting or a split of 60% of the phosphate applied at planting, with remaining 40% applied at the jointing stage. Zn was sprayed on the canopy of the wheat plants at the jointing stage. The phosphate amendment resulted in lower DTPA (diethylene triamine pentaacetic acid)-extractable Pb (1.39-10.7% lower than the control) and Cd (0.040-7.12%) in the soil. No significant effect of split application of phosphate was found on Pb and Cd availability in soil; however, higher rates of P resulted in lower Pb and Cd availabilities in the soil. Grain Pb (5.41-21.5% lower than the control), Cd (3.62-6.76%), and Zn (4.29-9.02%) concentrations were negatively affected by the phosphate application, with higher rates of phosphate resulting in lower grain heavy metal concentrations. Foliar application had no statistically significant influence on Pb and Cd concentrations in the grain (p > 0.05). Although Pb and Cd concentrations in wheat grains were reduced by the phosphate application, their concentrations were still much higher than the maximum permissible concentrations for wheat in the national standards of China. The results suggest that it is feasible to reduce wheat grain concentrations of Pb and Cd in Pb-smelting-polluted areas in northern China by soil application of superphosphate; however, the split application of the phosphate and the foliar application of Zn compounds do not have substantial impact on reducing accumulation of Pb and Cd in the wheat grains.

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Authors+Show Affiliations

Xing W
School of Chemistry and the Environment, Henan University of Technology, Zhengzhou, 450001, Henan, China.
Cao E
School of Chemistry and the Environment, Henan University of Technology, Zhengzhou, 450001, Henan, China.
Scheckel KG
U. S. Environmental Protection Agency, National Risk Management Research Laboratory, Cincinnati, OH, 45224, USA.
Bai X
College of Grassland Science, Gansu Agricultural University, Lanzhou, 730070, China.
Li L
School of Chemistry and the Environment, Henan University of Technology, Zhengzhou, 450001, Henan, China. lilp@haut.edu.cn.

MeSH

AnimalsChinaEdible GrainEnvironmental MonitoringLeadMetallurgyMetals, HeavyPhosphatesSoilSoil PollutantsTriticumZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30196463

Citation

Xing, Weiqin, et al. "Influence of Phosphate Amendment and Zinc Foliar Application On Heavy Metal Accumulation in Wheat and On Soil Extractability Impacted By a Lead Smelter Near Jiyuan, China." Environmental Science and Pollution Research International, vol. 25, no. 31, 2018, pp. 31396-31406.
Xing W, Cao E, Scheckel KG, et al. Influence of phosphate amendment and zinc foliar application on heavy metal accumulation in wheat and on soil extractability impacted by a lead smelter near Jiyuan, China. Environ Sci Pollut Res Int. 2018;25(31):31396-31406.
Xing, W., Cao, E., Scheckel, K. G., Bai, X., & Li, L. (2018). Influence of phosphate amendment and zinc foliar application on heavy metal accumulation in wheat and on soil extractability impacted by a lead smelter near Jiyuan, China. Environmental Science and Pollution Research International, 25(31), 31396-31406. https://doi.org/10.1007/s11356-018-3126-4
Xing W, et al. Influence of Phosphate Amendment and Zinc Foliar Application On Heavy Metal Accumulation in Wheat and On Soil Extractability Impacted By a Lead Smelter Near Jiyuan, China. Environ Sci Pollut Res Int. 2018;25(31):31396-31406. PubMed PMID: 30196463.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Influence of phosphate amendment and zinc foliar application on heavy metal accumulation in wheat and on soil extractability impacted by a lead smelter near Jiyuan, China. AU - Xing,Weiqin, AU - Cao,Enze, AU - Scheckel,Kirk G, AU - Bai,Xiaoming, AU - Li,Liping, Y1 - 2018/09/08/ PY - 2018/03/18/received PY - 2018/09/03/accepted PY - 2018/9/10/pubmed PY - 2019/1/18/medline PY - 2018/9/10/entrez KW - Grain KW - Heavy metal KW - Lead smelting KW - Phosphate KW - Soil KW - Split application KW - Wheat SP - 31396 EP - 31406 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 31 N2 - Higher concentrations of Pb and Cd in wheat grains harvested in several lead-smelting-polluted areas in northern China have been reported. This field experiment was conducted to investigate the effect of phosphate amendment and Zn foliar application on the accumulation of Pb and Cd in wheat grains grown in a lead-smelting impacted area in Jiyuan in northern China. The soil (total Pb and Cd are 261 and 2.65 mg kg-1, respectively) was amended with superphosphate at P:Pb ratios (mol:mol) of 1.90 or 2.57 either during wheat (Triticum aestivum L.) planting or a split of 60% of the phosphate applied at planting, with remaining 40% applied at the jointing stage. Zn was sprayed on the canopy of the wheat plants at the jointing stage. The phosphate amendment resulted in lower DTPA (diethylene triamine pentaacetic acid)-extractable Pb (1.39-10.7% lower than the control) and Cd (0.040-7.12%) in the soil. No significant effect of split application of phosphate was found on Pb and Cd availability in soil; however, higher rates of P resulted in lower Pb and Cd availabilities in the soil. Grain Pb (5.41-21.5% lower than the control), Cd (3.62-6.76%), and Zn (4.29-9.02%) concentrations were negatively affected by the phosphate application, with higher rates of phosphate resulting in lower grain heavy metal concentrations. Foliar application had no statistically significant influence on Pb and Cd concentrations in the grain (p > 0.05). Although Pb and Cd concentrations in wheat grains were reduced by the phosphate application, their concentrations were still much higher than the maximum permissible concentrations for wheat in the national standards of China. The results suggest that it is feasible to reduce wheat grain concentrations of Pb and Cd in Pb-smelting-polluted areas in northern China by soil application of superphosphate; however, the split application of the phosphate and the foliar application of Zn compounds do not have substantial impact on reducing accumulation of Pb and Cd in the wheat grains. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/30196463/Influence_of_phosphate_amendment_and_zinc_foliar_application_on_heavy_metal_accumulation_in_wheat_and_on_soil_extractability_impacted_by_a_lead_smelter_near_Jiyuan_China_ DB - PRIME DP - Unbound Medicine ER -