Detection of alkylmethylphosphonic acids on leaf surfaces by static secondary ion mass spectrometry

Journal Article · Sun Jan 01 00:00:00 EST 1995 · Analytical Chemistry (Washington); (United States)

DOI:https://doi.org/10.1021/ac00097a029· OSTI ID:6862610

Ingram, J C; Groenewold, G S; Appelhans, A D; Delmore, J E; Dahl, D A ^[1]

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1. Idaho National Engineering Lab., Idaho Falls, ID (United States)

Detection of environmental degradation products of nerve agents directly from the surface of plant leaves using static secondary ion mass spectrometry (SIMS) is demonstrated. Pinacolylmethylphosphonic acid (PMPA), isopropylmethylphosphonic acid (IMPA), and ethylmethylphosphonic acid (EMPA) were spiked from aqueous solutions onto philodendron leaves prior to analysis by static SIMS. Fragment ions were observed in the anion SIMS spectra from all three compounds at m/z 63, 77, 79, and 95, which are attributed to PO[sub 2][sup [minus]], CH[sub 2]PO[sub 2][sup [minus]], PO[sub 3][sup [minus]], and CH[sub 3]PO[sub 2]OH[sup [minus]], respectively. Additionally, peaks due to [M - H][sup [minus]] were observed at m/z 179 for PMPA, m/z 137 for IMPA, and m/z 123 for EMPA. The minimum detection limits for PMPA and IMPA on philodendron leaves were estimated to be between 4 and 0.4 ng/mm[sup 2]. The minimum detection limit for EMPA on philodendron leaves was estimated to be between 40 and 4 ng/mm[sup 2]. SIMS analyses of IMPA adsorbed on 10 different crop leaves were also performed in order to investigate the general applicability of static SIMS for detection of alkylmethylphosphonic acids (AMPAs) on a wide variety of leaves. 30 refs., 11 figs., 4 tabs.

• DOE Contract Number: AC07-76ID01570
• OSTI ID: 6862610
• Journal Information: Analytical Chemistry (Washington); (United States), Vol. 67:1; ISSN 0003-2700
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
47 OTHER INSTRUMENTATION
ORGANIC ACIDS
DETECTION
MASS SPECTROSCOPY
CHEMICAL WARFARE
ENVIRONMENTAL EXPOSURE
ENVIRONMENTAL IMPACTS
LEAVES
PESTICIDES
PLANTS
ORGANIC COMPOUNDS
SPECTROSCOPY
WARFARE
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)
400102 - Chemical & Spectral Procedures
440800 - Miscellaneous Instrumentation- (1990-)