文献类型：期刊文献

中文题名：黄菖蒲对水中阿特拉津污染的去除贡献研究

英文题名：Contribution of Iris pseudacorus to atrazine dissipation in water:Effects of initial atrazine concentrations

作者：王庆海[1] 夏凡[1,2] 李翠[1] 却晓娥[3]

第一作者：王庆海

机构：[1]北京市农林科学院北京草业与环境研究发展中心,北京100097;[2]中南林业科技大学环境科学与工程学院,长沙410004;[3]中国林业科学研究院荒漠化研究所,北京100091

年份：2020

卷号：39

期号：11

起止页码：2613-2620

中文期刊名：农业环境科学学报

外文期刊名：Journal of Agro-Environment Science

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：北京市自然科学基金项目(5192004);国家自然科学基金项目(31370540)。

语种：中文

中文关键词：水污染;黄菖蒲;阿特拉津;消解

外文关键词：water pollution;Iris pseudacorus;atrazine;dissipation

分类号：X52

摘要：为了明确植物对水体阿特拉津(Atrazine,ATZ)污染去除的贡献,筛选适宜的修复植物,通过历时35 d的水培试验,比较了挺水植物黄菖蒲(Iris pseudacorus)在抑菌(添加氨苄青霉素)和不抑菌条件下对不同浓度(0.5、1、2、4 mg·L^-1)ATZ的消解率和消解速率,以及ATZ在植物体内的运移分布特征。结果表明:ATZ消解率随初始浓度的增加而显著降低,ATZ初始浓度、微生物和植物均是ATZ消解率的显著影响因素,影响的重要性依次为ATZ初始浓度>微生物>植物。植物对ATZ消解的贡献率不抑菌处理(34%~49%)显著高于抑菌处理;微生物对ATZ消解的贡献率,无植物处理(28%~41%)显著低于有植物处理;ATZ初始浓度≤4 mg·L^-1时,对植物去除污染物的贡献无显著影响(P=0.371),而对微生物去除污染物的贡献影响显著(P=0.039)。黄菖蒲能够吸收ATZ并向茎叶转运,植物体内ATZ含量与ATZ初始浓度呈正相关关系;同时ATZ可在植物体内发生降解。因此,黄菖蒲对水培系统中ATZ的去除贡献较高,具有修复水体ATZ污染的潜力。
Based on a 35 d hydroponic experiment,the phytoremediation potential of emergent plants for atrazine(ATZ)was evaluated by investigating the contribution of Iris pseudacorus to ATZ dissipation in culture solution at different initial levels(0.5,1.0,2.0,and 4.0 mg·L-1)and the translocation and distribution of ATZ in plants under sterilized(culture solutions with the addition of ampicillin)and unsterilized conditions.The results showed that the dissipation rate of ATZ decreased significantly with increasing initial ATZ concentrations.The initial ATZ concentration,microorganisms,and plants had significant influences on the ATZ dissipation rate;their order of importance according to the decreasing effect on the ATZ dissipation rate was the initial ATZ concentration,microorganisms,and plants.The contribution rate of plants to ATZ dissipation in non-sterile conditions(34%~49%)was significantly higher than that in sterile conditions.The contribution rate of microorganisms in treatments without plants(28%~41%)was significantly lower than that in treatments with plants.The initial ATZ concentration had no significant effect on the plant contribution to pollutant removal at concentrations up to 4 mg·L-1(P=0.371),but had a significant effect on the microorganism contribution to pollutant removal(P=0.039).I.pseudacorus can absorb ATZ and transport it from the roots to the shoots,and the ATZ content in plants is positively correlated with the initial ATZ concentration.Furthermore,ATZ can be degraded in plants.Thus,I.pseudacorus is a plant species with a great contribution to ATZ removal from water,and can serve as a promising phytoremediation agent.