Laser Two-Photon Ionization of Pyrene on Contaminated Soils

Vladimir V. Gridin; Alona Korol; Valery Bulatov; Israel Schechter

doi:10.1021/ac9603237

Laser Two-Photon Ionization of Pyrene on Contaminated Soils

Vladimir V. Gridin, Alona Korol, Valery Bulatov, Israel Schechter^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

We report a first attempt to use the laser multiphoton ionization method for analysis of trace aromatic compounds on the surface of environmental (soils) and artificial (silica) samples. The measurement setup is composed of a N₂ pulsed laser and a fast conductivity detection system. The technique has been tested for detection of pyrene deposited on moist fine-powdered samples. The observed photoionization signals have indicated a gradual increase in the photoionization current and charge as a function of increasing concentration of pyrene/hexane solutions used for sample contamination. Contaminants have been analyzed in several (organic and inorganic) environmental samples, and a method to compensate for matrix effects is suggested. A contamination model is assumed and applied in order to renormalize all signals and provide an useful calibration plot. This calibration plot provides an upper estimate of pyrene LOD as 35 ng/g.

Original language	English
Pages (from-to)	3359-3363
Number of pages	5
Journal	Analytical Chemistry
Volume	68
Issue number	19
DOIs	https://doi.org/10.1021/ac9603237
State	Published - 1 Oct 1996
Externally published	Yes

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title = "Laser Two-Photon Ionization of Pyrene on Contaminated Soils",

abstract = "We report a first attempt to use the laser multiphoton ionization method for analysis of trace aromatic compounds on the surface of environmental (soils) and artificial (silica) samples. The measurement setup is composed of a N2 pulsed laser and a fast conductivity detection system. The technique has been tested for detection of pyrene deposited on moist fine-powdered samples. The observed photoionization signals have indicated a gradual increase in the photoionization current and charge as a function of increasing concentration of pyrene/hexane solutions used for sample contamination. Contaminants have been analyzed in several (organic and inorganic) environmental samples, and a method to compensate for matrix effects is suggested. A contamination model is assumed and applied in order to renormalize all signals and provide an useful calibration plot. This calibration plot provides an upper estimate of pyrene LOD as 35 ng/g.",

author = "Gridin, {Vladimir V.} and Alona Korol and Valery Bulatov and Israel Schechter",

year = "1996",

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T1 - Laser Two-Photon Ionization of Pyrene on Contaminated Soils

AU - Gridin, Vladimir V.

AU - Korol, Alona

AU - Bulatov, Valery

AU - Schechter, Israel

PY - 1996/10/1

Y1 - 1996/10/1

N2 - We report a first attempt to use the laser multiphoton ionization method for analysis of trace aromatic compounds on the surface of environmental (soils) and artificial (silica) samples. The measurement setup is composed of a N2 pulsed laser and a fast conductivity detection system. The technique has been tested for detection of pyrene deposited on moist fine-powdered samples. The observed photoionization signals have indicated a gradual increase in the photoionization current and charge as a function of increasing concentration of pyrene/hexane solutions used for sample contamination. Contaminants have been analyzed in several (organic and inorganic) environmental samples, and a method to compensate for matrix effects is suggested. A contamination model is assumed and applied in order to renormalize all signals and provide an useful calibration plot. This calibration plot provides an upper estimate of pyrene LOD as 35 ng/g.

AB - We report a first attempt to use the laser multiphoton ionization method for analysis of trace aromatic compounds on the surface of environmental (soils) and artificial (silica) samples. The measurement setup is composed of a N2 pulsed laser and a fast conductivity detection system. The technique has been tested for detection of pyrene deposited on moist fine-powdered samples. The observed photoionization signals have indicated a gradual increase in the photoionization current and charge as a function of increasing concentration of pyrene/hexane solutions used for sample contamination. Contaminants have been analyzed in several (organic and inorganic) environmental samples, and a method to compensate for matrix effects is suggested. A contamination model is assumed and applied in order to renormalize all signals and provide an useful calibration plot. This calibration plot provides an upper estimate of pyrene LOD as 35 ng/g.

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JO - Analytical Chemistry

JF - Analytical Chemistry

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ER -

Laser Two-Photon Ionization of Pyrene on Contaminated Soils

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