title: Phytoremediation of atrazine by three emergent hydrophytes in a hydroponic system.
abstract: A hydroponic system was used to evaluate atrazine (ATZ) removal and uptake by three emergent hydrophytes, Iris pseudacorus, Lythrum salicaria and Acorus calamus, determining their potential as phytoremediation agents for ATZ-contaminated water. After 20 days of exposure, the relative growth rate of plants in sterile conditions was less than in natural conditions. ATZ amount in a culture solution planted with emergent plants decreased significantly compared with an unplanted solution, and the removal rate of ATZ in natural conditions was greater than in sterile conditions (p < 0.05). The degradation contributions of I. pseudacorus, L. salicaria and A. calamus were 75.6, 65.5 and 61.8%, respectively. Those of the corresponding microbial population in the solution were 5.4, 11.4 and 17.4%, respectively. Emergent plants play a dominant role in reducing the ATZ level in the water body and could be used as phytoremediation agents.
authors: Beijing Research & Development Center for Grass and Environment, Beijing Academy of Agriculture and Forestry Sciences, China. qinghaiw@sina.com
authors: Qinghai
authors: Q
authors: Wang
authors: Wei
authors: W
authors: Zhang
authors: Cui
authors: C
authors: Li
authors: Bo
authors: B
authors: Xiao
mesh_terms: D029023:Acorus / Q000378:metabolism*; D001280:Atrazine / Q000737:chemistry / Q000378:metabolism*; D001673:Biodegradation, Environmental; D006540:Herbicides / Q000737:chemistry / Q000378:metabolism; D018527:Hydroponics / Q000379:methods*; D031323:Iris Plant / Q000378:metabolism*; D031561:Lythrum / Q000378:metabolism*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000378:metabolism
chemical_list: D006540:Herbicides; D014874:Water Pollutants, Chemical; D001280:Atrazine