| Title | Mercury fractionation, bioavailability, and the major factors predicting its transfer and accumulation in soil-wheat systems |
| Authors | Hussain, Sajjad Yang, Jianjun Hussain, Jamshad Sattar, Abdul Ullah, Subhan Hussain, Imran Rahman, Shafeeq Ur Zandi, Peiman Xia, Xing Zhang, Liandong |
| Affiliation | Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China Beijing Forestry Univ, Sch Soil & Water Conservat, Beijing 100081, Peoples R China Comsats Univ Islamabad, Dept Biotechnol, Environm Biotechnol Lab, Abbottabad Campus, Abbottabad, Pakistan Baha Uddin Zakariya Univ, Coll Agr, Bahadur Subcampus Layyah, Multan, Pakistan Dongguan Univ Technol, Sch Environm & Civil Engn, Dongguan, Guangdong, Peoples R China Peking Univ, Coll Urban & Environm Sci, MOE Lab Earth Surface Proc, Beijing 100871, Peoples R China Adapt Res Farm, Karor, Pakistan Yibin Univ, Int Fac Appl Technol, Yibin 644000, Peoples R China |
| Keywords | HEAVY-METALS CONTAMINATED SOILS TRITICUM-AESTIVUM MINE TAILINGS PLANTS SPECIATION RISK METHYLMERCURY TRANSPORT CADMIUM |
| Issue Date | 15-Nov-2022 |
| Publisher | SCIENCE OF THE TOTAL ENVIRONMENT |
| Abstract | Soil mercury (Hg) and its bioaccumulation in food crops have attracted widespread concerns globally due to its harmful effects on biota. However, soil mercury fractionation, bioavailability, and the major factors predicting its transfer and ac-cumulation in soil-wheat-systems have not been thoroughly explored. Twenty-one (21) soil samples collected throughout China with a wide spectrum of physico-chemical characteristics were contaminated with HgCl2 and winter wheat (Triticum aestivum L.) was grown on the soils in a greenhouse pot-culture experiment for 180 days. A four-step sequential extraction was used segregating soil Hg into water-soluble (F1, 0.21 %), exchangeable (F2, 0.07 %), organically bound (F3, 16.40 %), and residual fractions (F4, 83.32 %). Step-wise multiple linear regression (SMLR) and path analysis (PA) were used to develop a prediction model and identify the major controlling factors of soil-wheat Hg transference. The SMLR results revealed that wheat Hg in leaves, husk, and grain was positively correlated with soil total and avail-able Hg, and crystalline manganese (Cryst-Mn), while negatively correlated with soil pH, amorphous manganese (Amor-Mn) and crystalline aluminium (Cryst-Al). Bioconcentration factor (BCF) values were significantly higher in acidic |
| URI | http://hdl.handle.net/20.500.11897/658308 |
| ISSN | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2022.157432 |
| Indexed | SCI(E) |
| Appears in Collections: | 城市与环境学院 地表过程分析与模拟教育部重点实验室 |
