NDLI: Analysis of Organochlorine Pesticides in Coral (Porites evermanni) Samples Using Accelerated Solvent Extraction and Gas Chromatography/Ion Trap Mass Spectrometry

Content Provider	Springer Nature Link
Author	Wang, Dongli Miao, Xiusheng Li, Qing X.
Copyright Year	2007
Abstract	A gas chromatography/ion trap mass spectrometry method was developed for analysis of organochlorine pesticides (OCPs) in coral samples, which were extracted with accelerated solvent extraction (ASE) and cleaned up on a sulfuric acid-modified silica gel column. The optimal ASE conditions were found to be 100°C and 2000 psi, with a mixture of acetone and methylene chloride (1:1, v/v). The target analytes include hexachlorocyclohexanes (HCHs, specifically, α-, β-, γ-, and δ-HCH isomers), heptachlor, and hexachlorobenzene (HCB), o,p′-, p,p′-dichlorodiphenyltrichloroethane (o,p′-, p,p′-DDT), o,p′-, p,p′-dichlorodiphenyl-dichloroethylene (o,p′-, p,p′-DDE), and o,p′-, p,p′-dichlorodiphenyldichloroethane (o,p′-, p,p′-DDD). Standard sand samples were used as an alternative matrix spiked with OCP standards to determine the method precision and accuracy. Average recoveries of OCPs ranged from 82% to 102%, with relative standard deviations (RSDs) of 3%–6%, at a level of 10 ng/g and from 50% to 68%, with RSDs of 13%–19% at a level of 2 ng/g. The developed method was applied for analysis of OCPs in coral samples collected from Tern Island and Bikini Atoll in the Pacific Ocean. The concentrations of HCB were 7–26 pg/g dry weight in the samples from Bikini Atoll and 3–45 pg/g in those from Tern Island, and heptachlor concentrations were 208–2200 and 44–104 pg/g in the coral samples from Bikini Atoll and Tern Island, respectively. ∑HCH (sum of α-, β-, γ-, and δ-HCH) were 8–82 pg/g in Bikini Atoll coral and 86–629 pg/g in Tern island coral, and ∑DDT (sum of o,p′-, p,p′-DDD, o,p′-, p,p′-DDE, and o,p′- p,p′-DDT) were 80–212 pg/g in Bikini Atoll coral and 593–3165 pg/g in Tern Island coral. The results suggest that coral is a viable indicator species for pollution monitoring, which pollutants and their concentrations may be related to dated carbonate layers.
Starting Page	211
Ending Page	218
Page Count	8
File Format	PDF
ISSN	00904341
Journal	Archives of Environmental Contamination and Toxicology
Volume Number	54
Issue Number	2
e-ISSN	14320703
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-08-25
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Organochlorine pesticides Coral Marine pollution Environmental monitoring Soil Science & Conservation Environment Forestry Ecology Agriculture Terrestrial Pollution
Content Type	Text
Resource Type	Article
Subject	Pollution Health, Toxicology and Mutagenesis Medicine Toxicology

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