Arid
DOI10.1016/j.scitotenv.2016.01.177
Monitoring priority substances, other organic contaminants and heavy metals in a volcanic aquifer from different sources and hydrological processes
Estevez, Esmeralda1,3; del Carmen Cabrera, Maria1,2; Ramon Fernandez-Vera, Juan3; Molina-Diaz, Antonio4; Robles-Molina, Jose4; del Pino Palacios-Diaz, Maria5
通讯作者del Carmen Cabrera, Maria
来源期刊SCIENCE OF THE TOTAL ENVIRONMENT
ISSN0048-9697
EISSN1879-1026
出版年2016
卷号551页码:186-196
英文摘要

Irrigation with reclaimed water (R) is necessary to guarantee the sustainability of semi-arid areas. Results obtained during a two years monitoring network (2009-2011) in Gran Canaria are presented, including the analysis of chemical parameters, N and S isotopes, priority substances (2008/105/EC, 2013/39/EU), other organic contaminants and heavy metals in groundwater and R used to irrigate a golf course. The aims of this work are to evaluate the contamination in a volcanic aquifer, relate the presence of organic contaminants and heavy metals with the hydrogeochemistry and identify pollution sources in the area. No priority substance exceeded the EU thresholds for surface water, although seventeen were detected in R. The most frequent compounds were hexachlorobenzene, chlorpyrifos ethyl, fluorene, phenanthrene and pyrene. These compounds were detected at low concentration, except chlorpyrifos. Chlorpyrifos ethyl, terbuthylazine, diuron, terbutryn, procymidone, atrazine and propazine exceeded the European threshold concentration for pesticides in groundwater (100 ng L-1). Therefore, the priority substances chlorpyrifos ethyl and diuron must be included in monitoring studies. The priority pesticides chlorfenvinphos and diazinon were always detected in R but rarely in groundwater. Besides, the existence of contaminants not related to the current R irrigation has been identified. Absence of environmental problems related to heavy metals can be expected. The relationship among contaminant presence, hydrogeochemistry, including the stable isotopic prints of delta O-18, delta N-15 and delta S-34 and preferential recharge paths has been described. The coastal well shows high values of EC, nitrate, a variable chemistry, and 50% of organic contaminants detected above 100 ng L-1. The well located in the recharge area presents a stable hydrochemistry, the lowest value of delta N-15 and the lowest contaminants occurrence. The area is an example of a complex volcanic media with several sources of contaminants such as leakages from septic tanks and sewerage, agriculture practices, irrigation with reclaimed water or urban runoff. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Reclaimed water Organic contaminants Heavy metals Groundwater Chlorpyrifos ethyl Diuron
类型Article
语种英语
国家Spain
收录类别SCI-E
WOS记录号WOS:000372589800022
WOS关键词DISSOLVED SULFATE ; GRAN-CANARIA ; EMERGING CONTAMINANTS ; GROUNDWATER ; WATER ; NITRATE ; FATE ; PHARMACEUTICALS ; ISOTOPE ; POLLUTANTS
WOS类目Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196207
作者单位1.Univ Las Palmas Gran Canaria, Dept Fis GEOVOL, Las Palmas Gran Canaria 35017, Canary Islands, Spain;
2.IMDEA Water Inst, Madrid, Spain;
3.Agrifood & Phytopathol Lab Cabildo de Gran Canari, Arucas 35413, Canary Islands, Spain;
4.Univ Jaen, Dept Phys & Analyt Chem, Analyt Chem Res Grp, Jaen 23071, Spain;
5.Univ Las Palmas Gran Canaria, Dept Patol Anim Prod Anim Bromatol & Tecnol Alime, Arucas 35413, Canary Islands, Spain
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GB/T 7714
Estevez, Esmeralda,del Carmen Cabrera, Maria,Ramon Fernandez-Vera, Juan,et al. Monitoring priority substances, other organic contaminants and heavy metals in a volcanic aquifer from different sources and hydrological processes[J],2016,551:186-196.
APA Estevez, Esmeralda,del Carmen Cabrera, Maria,Ramon Fernandez-Vera, Juan,Molina-Diaz, Antonio,Robles-Molina, Jose,&del Pino Palacios-Diaz, Maria.(2016).Monitoring priority substances, other organic contaminants and heavy metals in a volcanic aquifer from different sources and hydrological processes.SCIENCE OF THE TOTAL ENVIRONMENT,551,186-196.
MLA Estevez, Esmeralda,et al."Monitoring priority substances, other organic contaminants and heavy metals in a volcanic aquifer from different sources and hydrological processes".SCIENCE OF THE TOTAL ENVIRONMENT 551(2016):186-196.
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