Department of Chemistry, University of Girona, Campus Montilivi, E-17071 Girona, Spain.
Chemosphere. 2012 Aug;88(9):1083-9. doi: 10.1016/j.chemosphere.2012.04.048. Epub 2012 May 26.
Pollution mitigation is an important target for restored wetlands, and although there is much information in relation to nutrient removal, little attention has been paid to emerging contaminants. This paper reports on the occurrence and attenuation capacity of 17 emerging contaminants in a restored wetland and two rivers in North-East Denmark. The compounds belong to the groups of pharmaceuticals, fragrances, antiseptics, fire retardants, pesticides, and plasticizers. Concentrations in surface waters ranged from 2 to 1476 ng L(-1). The compounds with the highest concentrations were diclofenac, 2-methyl-4-chlorophenoxyacetic acid (MCPA), caffeine, and tris(2-chloroethyl) phosphate (TCEP). The herbicide concentrations increased after a rain-fall event, demonstrating the agricultural run-off origin of these compounds, whereas the concentration of the other emerging contaminants was rather conservative. The mitigation capacity of the restored wetland for the compounds ranged from no attenuation to 84% attenuation (19% on average). Hence, restored wetlands may be considered as a feasible alternative for mitigating emerging contaminants from river waters.
减轻污染是湿地修复的一个重要目标，尽管有关养分去除的信息很多，但对新兴污染物的关注却很少。本文报道了丹麦东北部一个湿地和两条河流中 17 种新兴污染物的发生情况和衰减能力。这些化合物属于药物、香料、防腐剂、阻燃剂、杀虫剂和增塑剂。地表水中的浓度范围为 2 至 1476ng/L。浓度最高的化合物为双氯芬酸、2-甲基-4-氯苯氧基乙酸（MCPA）、咖啡因和三（2-氯乙基）磷酸酯（TCEP）。在一场降雨事件后，除草剂浓度增加，表明这些化合物来自农业径流，而其他新兴污染物的浓度则相对稳定。修复湿地对这些化合物的去除率从无衰减到 84%（平均为 19%）不等。因此，修复湿地可以被认为是减轻河流中新兴污染物的一种可行替代方法。
