翅碱蓬对石油烃类污染物的吸收  

Uptake of Petroleum Hydrocarbon Pollutants by Suaeda salsa

作　　者：李玉茹 徐凌[1] 赵洪霞[1] 张小娜 王庆芝 池勾剑 张硕[1] LI Yuru;XU Ling;ZHAO Hongxia;ZHANG Xiaonuo;WANG Qingzhi;CHI Goujian;ZHANG Shuo(Key Laboratory of Industrial Ecology and Environmental Engineering of Ministry of Education,School of Environmental Science and Technology,Dalian University of Technology,Dalian 400000,China)

机构地区：[1]大连理工大学环境学院工业生态和环境工程教育部重点实验室,辽宁大连400000

出　　处：《环境科学与技术》2022年第1期61-66,共6页Environmental Science & Technology

基　　金：中石油科技创新基金(2019D-5007-0502)。

摘　　要：该文采用溶液培养体系,以翅碱蓬为研究对象,研究了翅碱蓬对5种石油烃类污染物的吸收。结果表明,翅碱蓬可以吸收石油烃类污染物,且根部显著高于茎叶部。在该实验条件下,0~10 d内,翅碱蓬的5种目标污染物(菲、荧蒽、正二十烷、正二十四烷、正二十八烷)含量均先快速升高而后趋于降低,在3~4 d含量达到峰值(148~521μg/g)。翅碱蓬对污染物的富集作用明显,5种石油烃类污染物均可由根部传输到茎叶部,疏水性相对较高的石油烃类污染物更容易被根系吸收,疏水性较低的石油烃类污染物更容易发生易位,石油烃类污染物的迁移取决于其物理化学性质。研究结果有助于更好地理解翅碱蓬中石油烃类污染物的吸收和传输,从而为评估植物修复潜力提供理论依据。The uptake of five petroleum hydrocarbon pollutants by Suaeda salsa were investigated in solution culture system.The results showed that petroleum hydrocarbon pollutants could be absorbed by Suaeda salsa,and the content in the root was significantly higher than those in the shoot.Under the experimental conditions,the content of five target pollutants(PHE,FLA,C20,C24,C28)in Suaeda salsa increased rapidly and then tended to decrease,and reached the peak value(148~521μg/g)in approximate 3~4 days.Suaeda salsa has obvious enrichment effect on pollutants,all the petroleum hydrocarbon pollutants could be translocated from root to shoot.Petroleum hydrocarbon pollutants with relatively high hydrophobicity were more easily uptaken by roots,and had a relatively tough translocation,as a result,the migration of petroleum hydrocarbon pollutants depended on their physicochemical properties.This study was beneficial to better understand the uptake and translocation of petroleum hydrocarbon pollutants in Suaeda salsa,and further provided theoretical support for evaluation of the phytoremediation potential.

关 键 词：翅碱蓬 植物吸收 石油污染 溶液培养 

分 类 号：X503.23[环境科学与工程—环境工程]