Effect of Polyethylene (LDPE) Microplastic on Remediation of Cadmium Contaminated Soil by <i>Solanum nigrum</i>L.  

作　　者：Jiying Zou Chenyu Wang Jianwei Li Jia Wei Ying Liu Liangyu Hu Hui Liu Hongfeng Bian Dazhi Sun Jiying Zou;Chenyu Wang;Jianwei Li;Jia Wei;Ying Liu;Liangyu Hu;Hui Liu;Hongfeng Bian;Dazhi Sun(College of Resource and Environmental Engineering, Jilin Institute of Chemical Technology, Jilin, China;College of Land Science and Technology, China Agricultural University, Beijing, China;School of Environment, Northeast Normal University, Changchun, China;Yangtze River Shipping Public Security Bureau, Wuhan, China)

机构地区：[1]College of Resource and Environmental Engineering, Jilin Institute of Chemical Technology, Jilin, China [2]College of Land Science and Technology, China Agricultural University, Beijing, China [3]School of Environment, Northeast Normal University, Changchun, China [4]Yangtze River Shipping Public Security Bureau, Wuhan, China

出　　处：《Journal of Geoscience and Environment Protection》2022年第1期49-64,共16页地球科学和环境保护期刊（英文）

摘　　要：<i><span style="font-family:;" "="">Solanum nigrum</span></i><span style="font-family:;" "=""> L. has a delightful prospect as a hyperaccumulation plant for cadmium pollution remediation, and microplastic is a new type of pollution that has received wide attention. In this study, the effects of polyethylene microplastics (LDPE) (0.135, 0.27, 0.81 and 1.35 mg·kg^-1) and cadmium (20 mg·kg^-1) on the growth indexes and soil physical and chemical properties of <i>Solanum nigrum</i> L. were investigated in a 17-day microcosm experiment. The results showed that single LDPE contamination showed a trend of low concentration promotion and medium-high concentration inhibited the growth index of <i>Solanum nigrum</i> L. and soil physicochemical index, and single Cd contamination was more stressful to plants than single LDPE contamination, while low concentration of LDPE could reduce the effect of Cd on soil physical and chemical properties and promote plant growth and uptake of soil nutrients. These findings suggest that high concentrations of microplastics can inhibit the growth of <i>Solanum nigrum</i> L. alone or in combination with Cd, rather than reducing the toxicity of Cd.</span><i><span style="font-family:;" "="">Solanum nigrum</span></i><span style="font-family:;" "=""> L. has a delightful prospect as a hyperaccumulation plant for cadmium pollution remediation, and microplastic is a new type of pollution that has received wide attention. In this study, the effects of polyethylene microplastics (LDPE) (0.135, 0.27, 0.81 and 1.35 mg·kg^-1) and cadmium (20 mg·kg^-1) on the growth indexes and soil physical and chemical properties of <i>Solanum nigrum</i> L. were investigated in a 17-day microcosm experiment. The results showed that single LDPE contamination showed a trend of low concentration promotion and medium-high concentration inhibited the growth index of <i>Solanum nigrum</i> L. and soil physicochemical index, and single Cd contamination was more stressful to plants than single LDPE contamination, while low concentration of LDPE could reduce the effect of Cd on soil physical and chemical properties and promote plant growth and uptake of soil nutrients. These findings suggest that high concentrations of microplastics can inhibit the growth of <i>Solanum nigrum</i> L. alone or in combination with Cd, rather than reducing the toxicity of Cd.</span>

关 键 词：Microplastics Heavy Metal Compound Pollution PHYTOREMEDIATION Solanum nigrum L. 

分 类 号：TQ3[化学工程]