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Title: Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry

Abstract

Molecular secondary ion mass spectrometry (SIMS) has been investigated for sensitivity and selectivity in the analysis of gaseous organophosphorus compounds. Abundant analyte ions were observed when the gaseous organophosphorus compounds were admitted into the secondary ion source, where a matrix was under primary ion bombardment. The best matrix for the detection of dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), and diisopropyl methylphosphonate (DIMP) was determined to be polyphosphoric acid. The abundance of secondary analyte ions was observed to be linear with the introduction rate of gaseous analyte. The introduction rate necessary to produce a 3:1 signal-to-noise ratio in the intensity of secondary protonated molecular ions from DMMP was estimated to be 4 x 10/sup -11/ mols/sup -1/. Substantially more analyte fragmentation is observed by using SIMS than by using methane chemical ionization mass spectrometry. Ten compounds representative of other compound classes were investigated in the same manner as the organic phosphonates; characteristic secondary protonated molecular ions were detected from amines only.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN
OSTI Identifier:
5424109
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Journal Article
Journal Name:
Anal. Chem.; (United States)
Additional Journal Information:
Journal Volume: 57:4
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; AMINES; ION MICROPROBE ANALYSIS; MASS SPECTROSCOPY; ORGANOMETALLIC COMPOUNDS; PHOSPHORUS; EXPERIMENTAL DATA; GASES; PHOSPHORIC ACID; QUANTITATIVE CHEMICAL ANALYSIS; CHEMICAL ANALYSIS; DATA; ELEMENTS; FLUIDS; HYDROGEN COMPOUNDS; INFORMATION; INORGANIC ACIDS; MICROANALYSIS; NONDESTRUCTIVE ANALYSIS; NONMETALS; NUMERICAL DATA; ORGANIC COMPOUNDS; SPECTROSCOPY; 400104* - Spectral Procedures- (-1987); 400301 - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)

Citation Formats

Groenewold, G S, and Todd, P J. Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry. United States: N. p., 1985. Web. doi:10.1021/ac00281a024.
Groenewold, G S, & Todd, P J. Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry. United States. https://doi.org/10.1021/ac00281a024
Groenewold, G S, and Todd, P J. Mon . "Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry". United States. https://doi.org/10.1021/ac00281a024.
@article{osti_5424109,
title = {Detection of gaseous organophosphorus compounds using secondary ion mass spectrometry},
author = {Groenewold, G S and Todd, P J},
abstractNote = {Molecular secondary ion mass spectrometry (SIMS) has been investigated for sensitivity and selectivity in the analysis of gaseous organophosphorus compounds. Abundant analyte ions were observed when the gaseous organophosphorus compounds were admitted into the secondary ion source, where a matrix was under primary ion bombardment. The best matrix for the detection of dimethyl methylphosphonate (DMMP), trimethyl phosphate (TMP), and diisopropyl methylphosphonate (DIMP) was determined to be polyphosphoric acid. The abundance of secondary analyte ions was observed to be linear with the introduction rate of gaseous analyte. The introduction rate necessary to produce a 3:1 signal-to-noise ratio in the intensity of secondary protonated molecular ions from DMMP was estimated to be 4 x 10/sup -11/ mols/sup -1/. Substantially more analyte fragmentation is observed by using SIMS than by using methane chemical ionization mass spectrometry. Ten compounds representative of other compound classes were investigated in the same manner as the organic phosphonates; characteristic secondary protonated molecular ions were detected from amines only.},
doi = {10.1021/ac00281a024},
url = {https://www.osti.gov/biblio/5424109}, journal = {Anal. Chem.; (United States)},
number = ,
volume = 57:4,
place = {United States},
year = {1985},
month = {4}
}