Jamali Muhammad K, Kazi Tasneem G, Arain Muhammad B, Afridi Hassan I, Jalbani Nusrat, Kandhro Ghulam A, Shah Abdul Q, Baig Jameel A
Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, Pakistan.
J Hazard Mater. 2009 May 30;164(2-3):1386-91. doi: 10.1016/j.jhazmat.2008.09.056. Epub 2008 Sep 24.
The concentrations of heavy metals (HMs) in plants served to indicate the metal contamination status of the site, and also revealed the abilities of various plant species to take up and accumulate them from the soil dressed with sewage sludge. A study to comprehend the mobility and transport of HMs from soil and soil amended with untreated sewage sludge to different newly breaded varieties of wheat (Anmol, TJ-83, Abadgar and Mehran-89) in Pakistan. A pot-culture experiment was conducted to study the transfer of HMs to wheat grains, grown in soil (control) and soil amended with sewage sludge (test samples). The total and ethylenediaminetetraaceticacid (EDTA)-extractable HMs in agricultural soil and soil amended with domestic sewage sludge (SDWS) and wheat grains were analysed by flame atomic absorption spectrometer/electrothermal atomic absorption spectrometer, prior to microwave-assisted wet acid digestion method. The edible part of wheat plants (grains) from test samples presented high concentration of all HMs understudy (mgkg(-1)). Significant correlations were found between metals in exchangeable fractions of soil and SDWS, with total metals in control and test samples of wheat grains. The bio-concentration factors of all HMs were high in grains of two wheat varieties, TJ-83 and Mehran-89, as compared to other varieties, Anmol and Abadgar grown in the same agricultural plots.
植物中重金属（HMs）的浓度用于指示场地的金属污染状况，还揭示了各种植物物种从施用污水污泥的土壤中吸收和积累重金属的能力。一项旨在了解重金属从土壤以及用未经处理的污水污泥改良的土壤向巴基斯坦不同新培育的小麦品种（Anmol、TJ - 83、Abadgar和Mehran - 89）的迁移和转运情况的研究。进行了盆栽试验，以研究重金属向生长在土壤（对照）和用污水污泥改良的土壤（测试样品）中的小麦籽粒的转移。在采用微波辅助湿酸消解方法之前，通过火焰原子吸收光谱仪/电热原子吸收光谱仪分析了农业土壤、用生活污水污泥（SDWS）改良的土壤以及小麦籽粒中的总重金属和乙二胺四乙酸（EDTA）可提取的重金属。测试样品中小麦植株（籽粒）的可食用部分呈现出所有被研究重金属的高浓度（mgkg(-1)）。在土壤和SDWS的可交换部分中的金属与小麦籽粒对照和测试样品中的总金属之间发现了显著相关性。与在相同农田中种植的其他品种Anmol和Abadgar相比，两个小麦品种TJ - 83和Mehran - 89籽粒中所有重金属的生物富集系数都很高。
