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Simultaneous determination of alachlor, metolachlor, atrazine, and simazine in water and soil by isotope dilution gas chromatography/mass spectrometry

Journal Article · · J. Assoc. Off. Anal. Chem.; (United States)
OSTI ID:6078520
A multiresidue method was developed for the simultaneous determination of low parts per billion (ppb) concentrations of the herbicides alachlor, metolachlor, atrazine, and simazine in water and soil using isotope dilution gas chromatography/mass spectrometry (GC/MS). Known amounts of /sup 15/N,/sup 13/C-alachlor and /sup 2/H/sub 5/-atrazine were added to each sample as internal standards. The samples were then prepared by a solid phase extraction with no further cleanup. A high resolution GC/low resolution MS system with data acquisition in selected ion monitoring mode was used to quantitate herbicides in the extract. The limit of detection was 0.05 ppb for water and 0.5 ppb for soil. Accuracy greater than 80% and precision better than 4% was demonstrated with spiked samples.
Research Organization:
Connecticut Agricultural Experiment Station, New Haven (USA)
OSTI ID:
6078520
Journal Information:
J. Assoc. Off. Anal. Chem.; (United States), Journal Name: J. Assoc. Off. Anal. Chem.; (United States) Vol. 72:2; ISSN JANCA
Country of Publication:
United States
Language:
English

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Related Subjects

510101 -- Environment
Terrestrial-- Basic Studies-- Radiometric Techniques-- (-1989)
510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
520101 -- Environment
Aquatic-- Basic Studies-- Radiometric Techniques-- (-1989)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCURACY
CARBON 13
CARBON ISOTOPES
CHROMATOGRAPHY
DEUTERIUM
ECOLOGICAL CONCENTRATION
EVEN-ODD NUCLEI
GAS CHROMATOGRAPHY
HERBICIDES
HYDROGEN ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPE DILUTION
ISOTOPES
LAND POLLUTION
LIGHT NUCLEI
MASS SPECTROSCOPY
MEASURING METHODS
NITROGEN 15
NITROGEN ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PESTICIDES
POLLUTION
SEPARATION PROCESSES
SOILS
SPECTROSCOPY
STABLE ISOTOPES
TRACER TECHNIQUES
WATER POLLUTION