Accuracy and precision of determinations of chlorinated pesticides and polychlorinated biphenyls with automated interpretation of mass spectrometric data

Journal Article · Fri Aug 01 04:00:00 EDT 1986 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00122a021· OSTI ID:5335182

Alford-Stevens, A L; Bellar, T A; Eichelberger, J W; Budde, W L

Performance characteristics were determined for an analytical method that includes automated interpretation of mass spectra of polychlorinated biphenyls (PCBs) and 21 chlorinated pesticides. Determination of PCBs was by level of chlorination. After three capillary column injection techniques were evaluated, a splitless, cold-trapping technique was used. Reproducibility of mass spectrometer response to calibration compounds relative to two internal standards was evaluated over a period of 3 months. In the three sets of fortified water extracts, the largest relative standard deviation of replicate measurements was 8.4% for individual pesticides (concentrations of 3-10 ..mu..g/L), 16% for PCB isomer groups (concentrations unknown), and 2.9% for total PCBs (concentrations of 27-130 ..mu..g/L). Method bias was calculated for each pesticide and for total PCB concentrations in each of the three data sets. The highest method bias was observed with river water extracts. The detection limit for each pesticide in reagent water is approximately 1 ..mu..g/L.

• Research Organization: Environmental Protection Agency, Cincinnati, OH
• OSTI ID: 5335182
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 58:9; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
520200 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACCURACY
AROMATICS
AUTOMATION
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHLORINATED AROMATIC HYDROCARBONS
CHLORINATION
DATA
EXPERIMENTAL DATA
FRESH WATER
HALOGENATED AROMATIC HYDROCARBONS
HALOGENATION
HYDROGEN COMPOUNDS
INFORMATION
ISOMERS
MASS SPECTROSCOPY
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PESTICIDES
QUANTITATIVE CHEMICAL ANALYSIS
SPECTROSCOPY
TRACE AMOUNTS
WATER