An investigation of saturated vapor pressure regarding low-volatility organophosphorus extractants Di-(2-ethylhexyl) phosphoric acid and tributyl phosphate: Correlation and thermodynamics study

Srirachat, Wanchalerm; Pancharoen, Ura; Kheawhom, Soorathep

doi:10.1016/j.vacuum.2018.07.036

Cited by 7 publications

(2 citation statements)

References 39 publications

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“…In the literature, some data are available for the enthalpies of vaporization of TBP or TCPP, addressing the phase changes from polyurethane foams to air or from pure liquid compounds to air. − This approach allows the estimation of emissions at a desired temperature (here, at 23 °C). However, experimental measurements at a more elevated temperature limit the effect of the compound sink and strengthens the emission process.…”

Section: Resultsmentioning

confidence: 99%

Study of the Chemical Ionization of Organophosphate Esters in Air Using Selected Ion Flow Tube–Mass Spectrometry for Direct Analysis

Ghislain

Reyrolle

Sotiropoulos

et al. 2022

J. Am. Soc. Mass Spectrom.

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Organophosphate esters are an emerging environmental concern since they spread persistently across all environmental compartments (air, soil, water, etc.). Measurements of semivolatile organic compounds are important but not without challenges due to their physicochemical properties. Selected ion flow tube-mass spectrometry (SIFT-MS) can be relevant for their analysis in air because it is a direct analytical method without separation that requires little preparation and no external calibration. SIFT-MS is based on the chemical reactivity of analytes with reactant ions. For volatile and semivolatile organic compound analysis in the gas phase, knowledge of ion–molecule reactions and kinetic parameters is essential for the utilization of this technology. In the present work, we focused on organophosphate esters, semivolatile compounds that are now ubiquitous in the environment. The ion–molecule reactions of eight precursor ions that are available in SIFT-MS (H3O+, NO+, O2 •+, OH–, O•–, O2 •–, NO2 –, and NO3 –) with six organophosphate esters were investigated. The modeling of ion–molecule reaction pathways by calculations supported and complemented the experimental work. Organophosphate esters reacted with six of the eight precursor ions with characteristic reaction mechanisms, such as protonation with hydronium precursor ions and association with NO+ ions, while nucleophilic substitution occurred with OH–, O•–, and O2 •–. No reaction was observed with NO2 – and NO3 – ions. This work shows that the direct analysis of semivolatile organic compounds is feasible using SIFT-MS with both positive and negative ionization modes.

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Section: Resultsmentioning

confidence: 99%

Study of the Chemical Ionization of Organophosphate Esters in Air Using Selected Ion Flow Tube–Mass Spectrometry for Direct Analysis

Ghislain

Reyrolle

Sotiropoulos

et al. 2022

J. Am. Soc. Mass Spectrom.

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show abstract

“…The flow rate of the vaporized atoms using carrier gas is governed by Clausius–Clapeyron equation as written in the following equation (Eq. (1)):

where T is the temperature, P is the evaporated atoms' partial pressure, K is the Boltzmann constant, and △H is the evaporation enthalpy [ 47 ].…”

Section: Recent Advances In the Synthesis And Preparation Of Wsmentioning

confidence: 99%

Unleashing the potential of tungsten disulfide: Current trends in biosensing and nanomedicine applications

Bahri,

Yu,

Zhang

et al. 2024

Heliyon

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Development of integrated volatile organic compound purification system using tubular NaA zeolite membrane: Experimental and theoretical insights into vapor permeation and pervaporation process

Lim,

Kim,

Bak

et al. 2023

Separation and Purification Technology

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An investigation of saturated vapor pressure regarding low-volatility organophosphorus extractants Di-(2-ethylhexyl) phosphoric acid and tributyl phosphate: Correlation and thermodynamics study

Cited by 7 publications

References 39 publications

Study of the Chemical Ionization of Organophosphate Esters in Air Using Selected Ion Flow Tube–Mass Spectrometry for Direct Analysis

Study of the Chemical Ionization of Organophosphate Esters in Air Using Selected Ion Flow Tube–Mass Spectrometry for Direct Analysis

Unleashing the potential of tungsten disulfide: Current trends in biosensing and nanomedicine applications

Development of integrated volatile organic compound purification system using tubular NaA zeolite membrane: Experimental and theoretical insights into vapor permeation and pervaporation process

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