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Title: Organic toxicants in air and precipitation samples from the Lake Michigan area

Abstract

Measurements of PCBs, organochlorine insecticides, PAHs, and atrazine were made in air and precipitation samples collected at regionally-representative locations near Lake Michigan from 1992-1995. The purpose of these measurements was to provide information needed to estimate the atmospheric deposition of organic toxicants to Lake Michigan. Twenty-four hour samples of airborne particles and vapor were collected at 12-day intervals on quartz fiber filters and XAD-2 resin vapor traps using modified high volume sampleers. Twenty-eight day precipitation samples were collected using wet-only samplers with stainless steel sampling surfaces and heated enclosure containing an XAD-2 resin adsorption column. Samples were Soxhlet extracted for 24 hours with hexane:acetone (1:1), and concentrated by rotary evaporation. Interferences were removed and the samples separated into analyte groups by silica gel chromatography. Four fractions were collected for GC-ECD and GC-Ion Trap MS analyses. Ten pesticides, 101 PCB congeners, 18 PAHs, and atrazine were measured in all samples. Quality assurance was maintained by including field duplicate samples, field blanks, alboratory matrix spikes, laboratory matrix blanks, and laboratory surrogate spikes in the sampling/analytical protocols. Preliminary results from urban and remote sites show geographical variations in the concentrations of some toxicants due to contributions from local sources. For all sites themore » total PCB levels are higher in the vapor phase than the particulate phase and show strong seasonal variations. Seasonal variations were also observed for several pesticides.« less

Authors:
; ;
Publication Date:
OSTI Identifier:
598183
Report Number(s):
CONF-950980-
TRN: 98:001165-0002
Resource Type:
Conference
Resource Relation:
Conference: 109. international annual meeting and exposition of the Association of Official Analytical Chemists: for analytical science that solves today`s problems and anticipates tomorrow`s needs, Nashville, TN (United States), 17-21 Sep 1995; Other Information: PBD: 1995; Related Information: Is Part Of 109th AOAC international annual meeting & exposition. Final program; PB: 110 p.
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AIR; DEPOSITION; FILTERS; GEOGRAPHICAL VARIATIONS; LAKE MICHIGAN; SEASONAL VARIATIONS; ORGANIC CHLORINE COMPOUNDS; POLYCHLORINATED BIPHENYLS; VAPORS; AIR POLLUTION

Citation Formats

Harlin, K S, Sweet, C W, and Gatz, D F. Organic toxicants in air and precipitation samples from the Lake Michigan area. United States: N. p., 1995. Web.
Harlin, K S, Sweet, C W, & Gatz, D F. Organic toxicants in air and precipitation samples from the Lake Michigan area. United States.
Harlin, K S, Sweet, C W, and Gatz, D F. 1995. "Organic toxicants in air and precipitation samples from the Lake Michigan area". United States.
@article{osti_598183,
title = {Organic toxicants in air and precipitation samples from the Lake Michigan area},
author = {Harlin, K S and Sweet, C W and Gatz, D F},
abstractNote = {Measurements of PCBs, organochlorine insecticides, PAHs, and atrazine were made in air and precipitation samples collected at regionally-representative locations near Lake Michigan from 1992-1995. The purpose of these measurements was to provide information needed to estimate the atmospheric deposition of organic toxicants to Lake Michigan. Twenty-four hour samples of airborne particles and vapor were collected at 12-day intervals on quartz fiber filters and XAD-2 resin vapor traps using modified high volume sampleers. Twenty-eight day precipitation samples were collected using wet-only samplers with stainless steel sampling surfaces and heated enclosure containing an XAD-2 resin adsorption column. Samples were Soxhlet extracted for 24 hours with hexane:acetone (1:1), and concentrated by rotary evaporation. Interferences were removed and the samples separated into analyte groups by silica gel chromatography. Four fractions were collected for GC-ECD and GC-Ion Trap MS analyses. Ten pesticides, 101 PCB congeners, 18 PAHs, and atrazine were measured in all samples. Quality assurance was maintained by including field duplicate samples, field blanks, alboratory matrix spikes, laboratory matrix blanks, and laboratory surrogate spikes in the sampling/analytical protocols. Preliminary results from urban and remote sites show geographical variations in the concentrations of some toxicants due to contributions from local sources. For all sites the total PCB levels are higher in the vapor phase than the particulate phase and show strong seasonal variations. Seasonal variations were also observed for several pesticides.},
doi = {},
url = {https://www.osti.gov/biblio/598183}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}

Conference:
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