水生大型植物对杀菌剂的植物修复：毒性与去除率
Phytoremediation of fungicides by aquatic macrophytes: toxicity and removal rate.
作者信息
Dosnon-Olette Rachel, Couderchet Michel, Eullaffroy Philippe
机构信息
Laboratoire Plantes, Pesticides et Développement Durable (PPDD), URVVC-SE EA 2069, Université de Reims Champagne-Ardenne, BP 1039, 51687 Reims Cedex 2, France.
出版信息
Ecotoxicol Environ Saf. 2009 Nov;72(8):2096-101. doi: 10.1016/j.ecoenv.2009.08.010. Epub 2009 Sep 3.
The rate of removal of two fungicides (dimethomorph and pyrimethanil) from water by five macrophyte species (L. minor, S. polyrhiza, C. aquatica, C. palustris and E. canadensis) was assessed in laboratory tests. In order to assure that these studies were performed with healthy plants the effects of the fungicides on chlorophyll fluorescence were studied as well. At exposure concentrations of 600microgL(-1) the effects of the fungicides on chlorophyll fluorescence were minor, so that this initial concentration level was selected for the fungicide removal rate tests. The removal yields during the 4-d test periods varied from 10% to 18% and 7% to 12% for dimethomorph and pyrimethanil, respectively. The maximum removal rate during the 4-d test period was 48microgg(-1) fresh weight (FW) for dimethomorph and 33microgg(-1) FW for pyrimethanil. L. minor and S. polyrhiza showed the highest removal efficiency for the two fungicides.
在实验室测试中评估了5种大型植物（浮萍、紫萍、水葫芦、菖蒲和加拿大一枝黄花）对水中两种杀菌剂（烯酰吗啉和嘧霉胺）的去除率。为确保这些研究是在健康植物上进行的，还研究了杀菌剂对叶绿素荧光的影响。在600μg L⁻¹的暴露浓度下，杀菌剂对叶绿素荧光的影响较小，因此选择该初始浓度水平进行杀菌剂去除率测试。在4天的测试期内，烯酰吗啉和嘧霉胺的去除率分别为10%至18%和7%至12%。在4天的测试期内，烯酰吗啉的最大去除率为48μg g⁻¹鲜重（FW），嘧霉胺为33μg g⁻¹ FW。浮萍和紫萍对这两种杀菌剂的去除效率最高。
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