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Title: Determination of N-nitrosodimethylamine at part-per-trillion levels in drinking waters and contaminated groundwaters

Abstract

N-nitrosodimethylamine is a high, carcinogenic manufacturing by-product of unsymmetrical dimethyl hydrazine a component of rocket fuel. Prior disposal practices resulted in the contamination of groundwater near certain military installations with both species. The current regulatory threshold promulgated by the US Environmental Protection Agency (EPA) for NDMA in surface waters designated for drinking is 0.7 ng NDMA/L (0.7 pptr)L. Existing procedures for determining NDMA in aqueous samples typically employ dichloromethane extraction followed by concentration to a final volume of 1 mL, and gas chromatographic analysis of a 2 {mu}L aliquot of concentrate using either a nitrogen-phosphorus detector (NPD), mass spectrometric detector, or chemiluminescent nitrogen detector (CLND). Such a protocol does not permit detection of NDMA at the desired health-based criterion unless high-resolution mass spectrometric (HRMS) detectors are employed. The analytical procedure described in this work employed an initial solid-phase extraction of groundwater samples with a preconditioned Empore C{sub 18} disk, used to remove interfering neutral species including di-isopropylmethane phosphonate (DIMP), prior to continuous overnight extraction.

Authors:
; ;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (United States)
Sponsoring Org.:
Department of Defense, Washington, DC (United States)
OSTI Identifier:
164458
Report Number(s):
CONF-9505309-1
ON: DE96003024
DOE Contract Number:
AC05-84OR21400
Resource Type:
Technical Report
Resource Relation:
Conference: 18. annual conference on analysis of pollutants in the environment, Norfolk, VA (United States), 3-4 May 1995; Other Information: PBD: [1995]
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 40 CHEMISTRY; GROUND WATER; CONTAMINATION; CHEMICAL ANALYSIS; DRINKING WATER; WATER QUALITY; LIQUID FUELS; ROCKETS; MILITARY FACILITIES; AMINES; MASS SPECTROSCOPY; COMPILED DATA

Citation Formats

Tomkins, B.A., Griest, W.H., and Higgins, C.E. Determination of N-nitrosodimethylamine at part-per-trillion levels in drinking waters and contaminated groundwaters. United States: N. p., 1995. Web. doi:10.2172/164458.
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Tomkins, B.A., Griest, W.H., & Higgins, C.E. Determination of N-nitrosodimethylamine at part-per-trillion levels in drinking waters and contaminated groundwaters. United States. doi:10.2172/164458.
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Tomkins, B.A., Griest, W.H., and Higgins, C.E. Fri . "Determination of N-nitrosodimethylamine at part-per-trillion levels in drinking waters and contaminated groundwaters". United States. doi:10.2172/164458. https://www.osti.gov/servlets/purl/164458.
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@article{osti_164458,
title = {Determination of N-nitrosodimethylamine at part-per-trillion levels in drinking waters and contaminated groundwaters},
author = {Tomkins, B.A. and Griest, W.H. and Higgins, C.E.},
abstractNote = {N-nitrosodimethylamine is a high, carcinogenic manufacturing by-product of unsymmetrical dimethyl hydrazine a component of rocket fuel. Prior disposal practices resulted in the contamination of groundwater near certain military installations with both species. The current regulatory threshold promulgated by the US Environmental Protection Agency (EPA) for NDMA in surface waters designated for drinking is 0.7 ng NDMA/L (0.7 pptr)L. Existing procedures for determining NDMA in aqueous samples typically employ dichloromethane extraction followed by concentration to a final volume of 1 mL, and gas chromatographic analysis of a 2 {mu}L aliquot of concentrate using either a nitrogen-phosphorus detector (NPD), mass spectrometric detector, or chemiluminescent nitrogen detector (CLND). Such a protocol does not permit detection of NDMA at the desired health-based criterion unless high-resolution mass spectrometric (HRMS) detectors are employed. The analytical procedure described in this work employed an initial solid-phase extraction of groundwater samples with a preconditioned Empore C{sub 18} disk, used to remove interfering neutral species including di-isopropylmethane phosphonate (DIMP), prior to continuous overnight extraction.},
doi = {10.2172/164458},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 1995},
month = {Fri Dec 01 00:00:00 EST 1995}
}
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Technical Report:
View Technical Report (0.97 MB)
DOI:  10.2172/164458
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