Department of Environmental Sciences, COMSATS University Islamabad, Abbottabad Campus, Abbottabad, 22060, Pakistan.
State Key Laboratory of Urban Water Resource and Environment, Shenzhen Key Laboratory of Organic Pollution Prevention and Control, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen, 518055, People's Republic of China.
Environ Monit Assess. 2024 May 13;196(6):541. doi: 10.1007/s10661-024-12714-y.
Metal pollution in water, soil, and vegetation is an emerging environmental issue. Therefore, this study investigated the abundance of heavy metals (HMs) within roots and shoots of native plant species i.e., Bromus pectinatus, Cynodon dactylon, Poa annua, Euphorbia heliscopa, Anagallis arvensis, and Stellaria media grown in the adjoining area of municipal wastewater channels of a Pakistani city of Abbottabad. HMs concentrations (mg L) in municipal wastewater were: chromium (Cr) (0.55) > nickel (Ni) (0.09) > lead (Pb) (0.07) > cadmium (Cd) (0.03). Accumulation of HMs in both roots and shoots of plant species varied as B. pectinatus > C. dactylon > P. annua > E. heliscopa > A. arvensis > S. media. Irrespective of the plant species, roots exhibited higher concentrations of HMs than shoots. Higher amount of Cr (131.70 mg kg) was detected in the roots of B. pectinatus and the lowest amount (81 mg kg) in A. arvensis, Highest Cd concentration was found in the shoot of B. pectinatus and the lowest in the E. heliscopa. The highest concentration of Ni was found in the roots of S. media (37.40 mg kg) and the shoot of C. dactylon (15.70 mg kg) whereas the lowest Ni concentration was achieved in the roots of A. arvensis (12.10 mg kg) and the shoot of E. heliscopa (5.90 mg kg). The concentration of HMs in individual plant species was less than 1000 mg kg. Considering the higher values (> 1) of biological concentration factor (BCF), biological accumulation co-efficient (BAC), and translocation factor (TF), B. pectinatus and S. media species showed greater potential for HMs accumulation than other species. Therefore, these plants might be helpful for the remediation of HM-contaminated soil.
水、土壤和植被中的金属污染是一个新出现的环境问题。因此，本研究调查了生长在巴基斯坦阿伯塔巴德市市政污水渠道邻域的本地植物物种，包括雀稗、狗牙根、草地早熟禾、乳浆大戟、繁缕和麦蓝菜的根和茎叶中重金属（HM）的丰度。市政废水中的 HM 浓度（mg L）为：铬（Cr）（0.55）>镍（Ni）（0.09）>铅（Pb）（0.07）>镉（Cd）（0.03）。植物物种的根和茎叶中 HM 的积累量表现为雀稗>B. pectinatus>狗牙根>C. dactylon>草地早熟禾>P. annua>乳浆大戟>E. heliscopa>繁缕>A. arvensis>麦蓝菜>S. media。无论植物物种如何，根中 HM 的浓度均高于茎叶。在雀稗的根中检测到最高量的 Cr（131.70 mg kg），在繁缕的根中检测到最低量（81 mg kg），在雀稗的茎叶中检测到最高量的 Cd，在乳浆大戟的茎叶中检测到最低量。在麦蓝菜的根中检测到最高浓度的 Ni（37.40 mg kg），在狗牙根的茎叶中检测到最高浓度（15.70 mg kg），在繁缕的根中检测到最低浓度（12.10 mg kg），在乳浆大戟的茎叶中检测到最低浓度（5.90 mg kg）。个别植物物种中 HM 的浓度低于 1000 mg kg。考虑到生物浓缩因子（BCF）、生物积累系数（BAC）和迁移因子（TF）的值较高（>1），雀稗和麦蓝菜物种比其他物种更有潜力积累 HM。因此，这些植物可能有助于受 HM 污染土壤的修复。
