气候变化领域集成服务门户(CCPortal): A conceptual model of organochlorine fate from a combined analysis of spatial and mid-to long-term trends of surface and ground water contamination in tropical areas (FWI)

CCPortal

DOI	10.5194/hess-23-691-2019
	A conceptual model of organochlorine fate from a combined analysis of spatial and mid-to long-term trends of surface and ground water contamination in tropical areas (FWI)
	Cattan P.; Charlier J.-B.; Clostre F.; Letourmy P.; Arnaud L.; Gresser J.; Jannoyer M.
发表日期	2019
ISSN	1027-5606
起始页码	691
结束页码	709
卷号	23 期号:2
英文摘要	In this study, we investigated the management of long-term environmental pollution by organic pollutants such as organochlorine pesticides. We set out to identify conditions that are conducive to reducing pollution levels for these persistent molecules and then propose a conceptual model of organochlorine fate in water. Our approach looked at spatiooral changes in pollutant contents in surface water (SW) and groundwater (GW) on a large scale, in order to decipher the respective roles of soil, geology, hydrology and past treatment practices. The case of chlordecone (CLD) on the island of Martinique (1100 km 2 ) was selected given the sampling campaigns carried out since 2007 over more than 150 sites. CLD, its metabolite chlordecone-5b-hydro (5bCLD) and the metabolite-to-parent-compound ratio were compared. As regards the spatial variability of water contamination, our results showed that banana cropping areas explained the location of contaminated SW and GW, whereas the combination of soil and geology factors explained the main spatial variability in the 5bCLD CLD ratio. For temporal variability, these conditions defined a high diversity of situations in terms of the duration of pollution, highlighting two groups: water draining old geological formations and ferralsols or vertisols vs. recent geology and andosols. A conceptual leaching model provided some key information to help interpret downward trends in CLD and 5bCLD observed in water. Lastly, a conceptual model of organochlorine fate is proposed to explain the diversity of the 5bCLD CLD ratio in water. Our conclusions highlight the combined role of soil and groundwater residence time for differentiating between conditions that are more conducive, or not, to the disappearance of CLD from the environment. This paper presents a model that provides an overall perception of organochlorine pesticide fate in the environment. © 2019 Author(s).
语种	英语
scopus关键词	Geology; Groundwater; Insecticides; Metabolites; Organic pollutants; River pollution; Soil pollution; Soils; Surface waters; Tropics; Environmental pollutions; Geological formation; Groundwater residence time; Organochlorine pesticides; Spatial variability; Surface and ground waters; Temporal variability; Water contamination; Groundwater pollution; chlordecone; groundwater pollution; hydrological modeling; long-term change; organochlorine pesticide; residence time; soil classification; spatial variation; Martinique; Windward Islands [Lesser Antilles]
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159767
作者单位	Cattan, P., CIRAD, Unité Propre de Recherche GECO, Montpellier, 34398, France, GECO, University of Montpellier, CIRAD, Montpellier, France; Charlier, J.-B., BRGM, University of Montpellier, Montpellier, 34000, France; Clostre, F., CIRAD, Unité Propre de Recherche HortSys, Le Lamentin, Martinique, 97285, France, HortSys, University of Montpellier, CIRAD, Montpellier, France; Letourmy, P., CIRAD, Unité Propre de Recherche AIDA, Montpellier, 34398, France, AIDA, University of Montpellier, CIRAD, Montpellier, France; Arnaud, L., BRGM, Fort-de-France, Martinique, 97200, France; Gresser, J., Office de l'EAU, Fort-de-France, Martinique, 97201, France; Jannoyer, M., CIRAD, DGDRS, Montpellier, 34398, France
推荐引用方式 GB/T 7714	Cattan P.,Charlier J.-B.,Clostre F.,et al. A conceptual model of organochlorine fate from a combined analysis of spatial and mid-to long-term trends of surface and ground water contamination in tropical areas (FWI)[J],2019,23(2).
APA	Cattan P..,Charlier J.-B..,Clostre F..,Letourmy P..,Arnaud L..,...&Jannoyer M..(2019).A conceptual model of organochlorine fate from a combined analysis of spatial and mid-to long-term trends of surface and ground water contamination in tropical areas (FWI).Hydrology and Earth System Sciences,23(2).
MLA	Cattan P.,et al."A conceptual model of organochlorine fate from a combined analysis of spatial and mid-to long-term trends of surface and ground water contamination in tropical areas (FWI)".Hydrology and Earth System Sciences 23.2(2019).