Detection Limit and Surface Coverage Determination for Tributyl Phosphate on Soils by Static SIMS

Jani C Ingram, G. S. Groenewold, A. D. Appelhans, D. A. Dahl, J. E. Delmore

Research output: Contribution to journalArticle

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Abstract

The minimum detectable limit (MDL) and semiquantitative determination of surface coverages of tributyl phosphate (TBP) on soils by static SIMS are reported. Two soils with similar bulk chemistries having surface areas of 3 and 20 m2/g were exposed to TBP (solution-phase and gas-phase exposures). These samples were investigated using two SIMS instruments, one utilizing a quadrupole mass analyzer and the other an ion trap mass analyzer. The SIMS response plotted as a function of exposure exhibited a leveling of the signal at a surface concentration estimated at 1 monolayer. The overall results of these studies were similar for both solution- and gas-phase exposures and for both soils. A minimum detection limit for TBP on both soils was determined to be 0.06 ± 0.03 monolayer (∼70 pg/mm2) for the quadrupole SIMS. Preliminary results suggest that the MDL for TBP analysis on soils using ion trap SIMS is lower; however, because the ion trap SIMS is still evolving, the MDL for that instrument was not determined. These results provide a basis for evaluation of static SIMS for use as a screening tool and illustrate the potential for investigating submonolayer surface coverages of organic contaminants on environmental surfaces by static SIMS.

Original languageEnglish (US)
Pages (from-to)1309-1316
Number of pages8
JournalAnalytical Chemistry
Volume68
Issue number8
StatePublished - Apr 15 1996
Externally publishedYes

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Secondary ion mass spectrometry
Soils
Ions
Monolayers
Gases
tributyl phosphate
Surface chemistry
Screening
Impurities

ASJC Scopus subject areas

  • Analytical Chemistry

Cite this

Ingram, J. C., Groenewold, G. S., Appelhans, A. D., Dahl, D. A., & Delmore, J. E. (1996). Detection Limit and Surface Coverage Determination for Tributyl Phosphate on Soils by Static SIMS. Analytical Chemistry, 68(8), 1309-1316.

Detection Limit and Surface Coverage Determination for Tributyl Phosphate on Soils by Static SIMS. / Ingram, Jani C; Groenewold, G. S.; Appelhans, A. D.; Dahl, D. A.; Delmore, J. E.

In: Analytical Chemistry, Vol. 68, No. 8, 15.04.1996, p. 1309-1316.

Research output: Contribution to journalArticle

Ingram, JC, Groenewold, GS, Appelhans, AD, Dahl, DA & Delmore, JE 1996, 'Detection Limit and Surface Coverage Determination for Tributyl Phosphate on Soils by Static SIMS', Analytical Chemistry, vol. 68, no. 8, pp. 1309-1316.
Ingram JC, Groenewold GS, Appelhans AD, Dahl DA, Delmore JE. Detection Limit and Surface Coverage Determination for Tributyl Phosphate on Soils by Static SIMS. Analytical Chemistry. 1996 Apr 15;68(8):1309-1316.
Ingram, Jani C ; Groenewold, G. S. ; Appelhans, A. D. ; Dahl, D. A. ; Delmore, J. E. / Detection Limit and Surface Coverage Determination for Tributyl Phosphate on Soils by Static SIMS. In: Analytical Chemistry. 1996 ; Vol. 68, No. 8. pp. 1309-1316.
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