Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore.
Department of Civil and Environmental Engineering, National University of Singapore, 1 Engineering Drive 2, 117576, Singapore; NUS Environmental Research Institute, National University of Singapore, 5A Engineering Drive 1, T-Lab Building, 117411, Singapore.
Chemosphere. 2019 May;222:275-285. doi: 10.1016/j.chemosphere.2019.01.116. Epub 2019 Jan 23.
Pharmaceuticals and personal care products (PPCPs) is an important class of environmental contaminants and has gained increasing concerns in recent years. The bioaccumulation behaviour of PPCPs in wetland plants is not well understood. In the present study we report results of a field investigation to assess the bioaccumulation behaviour and phytoremediation efficacy of several PPCPs in Lorong Halus Wetland, a large-scale constructed wetland system in Singapore, constructed for the treatment of landfill leachate. Liquid chromatography-tandem mass spectrometry (LC-MS/MS) based methods were employed to quantify concentrations of target PPCPs in leachate and flowing water, as well as wetland plants (roots and shoots), at different locations in the wetland system. The results indicated the presence of several PPCPs in leachate, water and vegetation in the wetland. Bioconcentration factors (BCFs) in the dominant wetland plant, Typha angustifolia, ranged between approximately 60 and 2000. Results indicated that Cattail Typha angustifolia was capable of remediating PPCPs to various extends, with bioconcentration factors ranging up to 2000. The suitability for phytoremediation depends on the physical chemical properties such as hydrophilicity and lipophilicity of these PPCPs.
药品和个人护理产品（PPCPs）是一类重要的环境污染物，近年来受到了越来越多的关注。PPCPs 在湿地植物中的生物积累行为还不太清楚。在本研究中，我们报告了一项现场调查的结果，该调查评估了几种 PPCPs 在新加坡大规模构建湿地系统——罗弄哈鲁士湿地（Lorong Halus Wetland）中的生物积累行为和植物修复效果，该湿地系统是为处理垃圾渗滤液而建造的。采用基于液相色谱-串联质谱（LC-MS/MS）的方法来定量检测垃圾渗滤液、流水以及湿地植物（根和茎）中目标 PPCPs 的浓度，这些植物位于湿地系统的不同位置。结果表明，垃圾渗滤液、湿地中的水中和植被中存在几种 PPCPs。优势湿地植物——狭叶香蒲（Typha angustifolia）中的生物浓缩因子（BCF）在 60 到 2000 之间。结果表明，香蒲（Typha angustifolia）能够在不同程度上修复 PPCPs，生物浓缩因子高达 2000。植物修复的适宜性取决于这些 PPCPs 的物理化学性质，如亲水性和疏水性。
