PMID- 15386137
OWN - NLM
STAT- MEDLINE
DCOM- 20041018
LR  - 20091119
IS  - 0090-4341 (Print)
IS  - 0090-4341 (Linking)
VI  - 47
IP  - 2
DP  - 2004 Aug
TI  - A sonication extraction method for the analysis of pyrethroid, organophosphate, 
      and organochlorine pesticides from sediment by gas chromatography with 
      electron-capture detection.
PG  - 141-7
AB  - A method was developed for the simultaneous determination of 5 pyrethroid, 1 
      organophosphate, and 20 organochlorine pesticides in sediment. Pesticide residues 
      were extracted using sonication with acetone-methylene chloride (1:1 vol/vol) and 
      the extracts were subsequently cleaned with deactivated Florisil (magnesium 
      silicate; U.S. Silica, Berkeley Springs, West Virginia). Gas chromatography with 
      an electroncapture detector was used for analyte determination, and two columns 
      were used for confirmation of the analytes. Four control sediments from different 
      sources were spiked with a pesticide mix and analyzed for method validation. The 
      method detection limits ranged from 0.22 to 0.85 microg/kg dry sediment. 
      Recoveries for spiked samples at four concentrations (1, 5, 20, and 400 microg/kg 
      dry sediment) were 71.9% to 129.8% with relative standard deviations (RSDs) < 
      11%. Taking the matrix effect into account, 1 microg/kg was chosen for the 
      threshold of detection, but 0.5 microg/kg of spiked control sediment still 
      provided good recoveries and RSDs. This method was validated using 
      field-collected sediment taken from agricultural areas of Fresno County, 
      California.
FAU - You, J
AU  - You J
AD  - Fisheries and Illinois Aquaculture Center and Department of Zoology, Southern 
      Illinois University-Carbondale, Carbondale, Illinois 62901, USA.
FAU - Weston, D P
AU  - Weston DP
FAU - Lydy, M J
AU  - Lydy MJ
LA  - eng
PT  - Journal Article
PT  - Research Support, U.S. Gov't, Non-P.H.S.
PL  - United States
TA  - Arch Environ Contam Toxicol
JT  - Archives of environmental contamination and toxicology
JID - 0357245
RN  - 0 (Pesticide Residues)
RN  - 0 (Pesticides)
RN  - 0 (Soil Pollutants)
SB  - IM
MH  - Chemistry Techniques, Analytical/methods
MH  - Chromatography, Gas
MH  - Geologic Sediments/*chemistry
MH  - Pesticide Residues/*analysis
MH  - Pesticides/*analysis
MH  - Soil Pollutants/*analysis
MH  - *Ultrasonics
EDAT- 2004/09/24 05:00
MHDA- 2004/10/19 09:00
CRDT- 2004/09/24 05:00
PHST- 2004/09/24 05:00 [pubmed]
PHST- 2004/10/19 09:00 [medline]
PHST- 2004/09/24 05:00 [entrez]
AID - 10.1007/s00244-003-3165-8 [doi]
PST - ppublish
SO  - Arch Environ Contam Toxicol. 2004 Aug;47(2):141-7. doi: 
      10.1007/s00244-003-3165-8.