title: Organochlorine pesticides levels in Portuguese coastal areas.
abstract: Data on levels of persistent organochlorine pesticides (OCPs) that exhibit potentially harmful effects to the environment all over the Portuguese coastal sediments were scarce. Therefore, in 2007-2008 12 OCPs were surveyed in surface sediments from 11 coastal sites (estuarine or lagoonal) covering north, centre and south areas of Portugal. Analyzes were performed using a previously validated method, involving pre-extraction of OCPs from sediments assisted by microwave and headspace solid-phase microextraction followed by gas chromatography with electron capture detection for quantification and mass spectrometry for OCPs identification. Measurable levels (0.08-26ng g(-1)) of alpha-hexachlorocyclohexane (alpha -HCH), gamma-hexachlorocyclohexane (lindane), aldrin, dieldrin, endrin, 4,4'-DDT, 4,4'-DDD, 4,4'-DDE, heptachlor, heptachlor epoxide, endosulfan I and methoxychlor were observed in all cases. In few cases, the found levels denote the probability of occurrence of adverse biological effects.
authors.affiliation: CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental and Faculdade de Ciências, Universidade do Porto, R. Campo Alegre 687, 4169-007 Porto, Portugal.
authors.forename: Pedro N
authors.initials: PN
authors.lastname: Carvalho
authors.affiliation: CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental and Faculdade de Ciências, Universidade do Porto, R. Campo Alegre 687, 4169-007 Porto, Portugal.
authors.forename: Pedro Nuno R
authors.initials: PNR
authors.lastname: Rodrigues
authors.affiliation: CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental and Faculdade de Ciências, Universidade do Porto, R. Campo Alegre 687, 4169-007 Porto, Portugal.
authors.forename: M Clara P
authors.initials: MCP
authors.lastname: Basto
authors.affiliation: CIMAR/CIIMAR - Centro Interdisciplinar de Investigação Marinha e Ambiental and Faculdade de Ciências, Universidade do Porto, R. Campo Alegre 687, 4169-007 Porto, Portugal. Electronic address: mtvascon@fc.up.pt.
authors.forename: M Teresa S D
authors.initials: MTSD
authors.lastname: Vasconcelos
mesh_terms: D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000032:analysis* / Q000302:isolation & purification; D019015:Geologic Sediments / Q000032:analysis*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000302:isolation & purification; D008872:Microwaves; D010573:Pesticide Residues / Q000032:analysis* / Q000302:isolation & purification; D011174:Portugal; D052617:Solid Phase Microextraction
chemical_list: D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues