Gas phase retention volume behavior of organic compounds on the sorbent poly(oxy-m-terphenyl-2',5'-ylene)

Pankow, James F.

doi:10.1021/ac00160a024

Cited by 30 publications

(7 citation statements)

References 30 publications

(28 reference statements)

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“…The low breakthrough was a result of the low sample volumes (~200 L), the quantity of Tenax used, the inherent high affinities of the target compounds for Tenax, and the relatively low sampling temperatures (mean temperature for the five events was ~10 °C). Pankow (21) has reviewed the retention volume information available for Tenax.…”

Section: Breakthrough Of Target Compounds On Pufssmentioning

confidence: 99%

High-volume air sampler for particle and gas sampling. 1. Design and gas sampling performance

Hart¹,

Isabelle²,

Pankow³

1992

Environ. Sci. Technol.

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Section: Breakthrough Of Target Compounds On Pufssmentioning

confidence: 99%

High-volume air sampler for particle and gas sampling. 1. Design and gas sampling performance

Hart¹,

Isabelle²,

Pankow³

1992

Environ. Sci. Technol.

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“…If the sorption kinetics were infinitely fast, then the particles would be in complete equilibrium with the influent concentration when t = Tm. The dependence of TM upon KpMp illustrates the similarity between sorption processes on/in a filter and those in a PUF plug or a Tenax cartridge; it is the product of the partition coefficient and the mass that determines the retention volume (26). (This is just one of many examples of why Kp is a more intuitive type of partition coefficient than is K.) The dimensionless time, then, is…”

Section: Model Compounds and Parameter Estimationmentioning

confidence: 99%

Application of a radial diffusion model to describe gas/particle sorption kinetics

Rounds¹,

Pankow²

1990

Environ. Sci. Technol.

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A radial diffusion model is adapted to describe the kinetics of the exchange of organic compounds between the gas and particulate phases in the atmosphere. A Crank-Nicolson finite difference scheme with variable time stepping is used in applying the model to polydisperse particle size distributions. Two sets of conditions are simulated: (1) airborne particles, as in the ambient atmosphere, and (2) filter-bound particles, such as those found in an air filtration apparatus. The time scale of the intraparticle diffusion reaction, TD, is greatly dependent upon the atmospheric partition coefficient of the compound, Kp (m3/pg), and the particle size distribution of the aerosol. For most compounds typically determined in atmospheric samples, sorption equilibrium with airborne particles is approached rapidly. Sorption reactions that take place on /in filters are controlled not only by TD but also by an equilibrium mass-transfer time scale, TM, which is a function of Kp, the amount of particulate mass, Mp, and the volumetric flow rate, /. The kinetics of sorption reactions on/in filters are predicted to play an important role in the determination of both the probability and the magnitude of sorption-related artifacts within field-derived values of Kp.

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“…Specific retention volumes (V" m3 g"1) for organic vapors on Tenax-GC and PUF have been reviewed and correlated topLe by (2,17) log V" = m log pL°+ b…”

Section: Introductionmentioning

confidence: 99%

Collection of nonpolar organic compounds from ambient air using polyurethane foam-granular adsorbent sandwich cartridges

Zaranski¹,

Patton²,

McConnell³

et al. 1991

Anal. Chem.

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Glass cartridges containing 6-10 g of Tenax-GC or 15 g of XAD-2 resin packed between two slices of polyurethane foam (PUF) were used in a General Metal Works PS-1 high-volume sampler to collect chlorobenzenes (CBs) containing three to six chlorine atoms, hexachlorocyclohexanes (HCHs), and two-ring aromatic hydrocarbons from 35-385 m3 of air. Laboratory experiments were run by vaporizing known quantities of analytes into a clean airstream for sampling by the PS-1 system at 20 degrees C. Collection efficiencies, determined from mass balance of the quantities introduced and recovered, ranged from 70 to 120% for individual compounds and averaged 93% overall. Penetration of analytes to backup adsorbent traps showed an inverse correlation to vapor pressure. The method was used to collect the above compounds from urban and rural air.

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Gas phase retention volume behavior of organic compounds on the sorbent poly(oxy-m-terphenyl-2',5'-ylene)

Cited by 30 publications

References 30 publications

High-volume air sampler for particle and gas sampling. 1. Design and gas sampling performance

High-volume air sampler for particle and gas sampling. 1. Design and gas sampling performance

Application of a radial diffusion model to describe gas/particle sorption kinetics

Collection of nonpolar organic compounds from ambient air using polyurethane foam-granular adsorbent sandwich cartridges

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