安全与环境工程2024，Vol.31Issue(6)：251-258,8.DOI:10.13578/j.cnki.issn.1671-1556.20230082
聚合态羟基铝的植物毒性研究
Phytotoxicity study of polyhydroxy aluminum
摘要
Abstract
Polyhydroxy aluminum Al13 and Al30 are the dominant forms of polyaluminum chloride(PAC)in water treatment process.The residual aluminum after water treatment will enter the soil through land use.Some studies have reported that aluminum is one of the factors which is limited to the crop development in acidic soil,but there is still a lack of in-depth studies on the effects and mechanisms of different polymerized forms of hydroxy aluminum on plants.The seed germination index of Chinese cabbage was used to evaluate the toxicity of three different forms of aluminum Al3+,Al13 and Al30 to plants,and the plant toxicity effects of polymerized hydroxyl aluminum were tested.The responses of apical nuclear staining(PI)distribution,content of reactive oxygen species(ROS),activity of superoxide dismutase(SOD)and content of malondialdehyde(MDA)to the physiological properties of polyhydroxy-aluminum were tested.The results of plant toxicity study show that under the condition of a concentration of 100 mg/L,the three forms of aluminum have significant inhibitory effects on the root growth of Chinese cabbage,and the toxicity of polymerized aluminum Al13 and Al30 is weaker than that of mononuclear Al3+.The three aluminum forms have no significant effect on the germination rate of Chinese cabbage.Moreover,the physiological response of plants to polymerized hydroxyl aluminum showes that aluminum toxicity promotes the accumulation of reactive oxygen species and increases SOD activity.Intracellular peroxidation of root cells results in lipid oxidation of membrane and damage of plasma membrane,which results in the increase of intracellular MDA content.This paper can provide basic information for the better control of aluminium toxicity in soil.关键词
聚合氯化铝/聚合态羟基铝/铝形态/植物毒性/毒性机制/土壤铝毒害Key words
polyaluminum chloride/polyhydroxy aluminum/aluminum species/phytotoxicity/mechanism of toxicity/aluminium toxicity in soil分类
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孙鹏,徐元强,余钰泽,周浩,胡爱彬,赵海军,张伟军..聚合态羟基铝的植物毒性研究[J].安全与环境工程,2024,31(6):251-258,8.基金项目
宁夏回族自治区银川市科技创新重点项目(2022ZDGX08) （2022ZDGX08）
