Department of Biology, Hong Kong Baptist University, 224 Waterloo Road, HKSAR, Kowloon Tong, Hongkong.
History Department, Hong Kong Shue Yan University, HKSAR, North Point, Hongkong.
Environ Sci Pollut Res Int. 2019 Dec;26(34):35275-35280. doi: 10.1007/s11356-019-06771-x. Epub 2019 Nov 19.
The objective of this study is to investigate the contributions of Mikania micrantha (chinese creeper) to remediate heavy metal pollutants present in an e-waste-contaminated soil. Different proportions of e-waste soil (0%, 25%, 50%, 75%, and 100% w/w) planted with Cynodon dactylon together with the test species were prepared for testing relative seed germination (RSG), relative root growth (RRG), and germination index (GI) tests. A significant higher value of GI (77.8%) was found in M. micrantha than that of the other species when planting in 100% e-waste-contaminated soil. A significant correlation (< 0.05) was found between heavy metal concentration and germination assays in M. micrantha. A significant decrease in heavy metal concentration of the polluted soil after the experiment indicated that biomolecule development studies to determine the aggregate benefit of M. micrantha for phytoremediation remain to be studied in future.
本研究旨在探讨薇甘菊（中国长春藤）对修复受电子废物污染土壤中重金属污染物的贡献。为了进行相对种子发芽率（RSG）、相对根生长率（RRG）和发芽指数（GI）测试，准备了不同比例的电子废物土壤（0%、25%、50%、75%和 100%w/w），并种植了狗牙根草和测试物种。在种植 100%受电子废物污染的土壤中，薇甘菊的 GI 值（77.8%）显著高于其他物种。在薇甘菊中，重金属浓度与发芽试验之间存在显著相关性（<0.05）。实验后，受污染土壤中的重金属浓度显著下降，表明仍需研究生物分子发育研究，以确定薇甘菊在植物修复中的综合效益。
