Application of the method of chromatographic equilibration to air pollution studies

Gelbicova-Ruzickova, Jarmila.; Novák, Josef; Janák, J.

doi:10.1016/s0021-9673(00)92944-3

Cited by 27 publications

(7 citation statements)

References 12 publications

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“…We have examined three methods of integrated sampling with regard to these special problems: sampling with adsorption tubes, with evacuated bottles and with organic vapour dosimeters. Collection of pollutants by drawing air through adsorption tubes is a standard method in industrial pollution control (Pellizzari et al, 1976;Brookes, Jickells and Nicolson, 1978) and has been applied to the problems of operating room pollution monitoring (Gelbicova-Ruzickova, Novak and Janak, 1972;Carter and Halliday, 1978;Halliday and Carter, 1978). Integrated sampling using evacuated aluminium bottles is a recent adaptation by Davenport and colleagues (1976) of a spot sampling method.…”

Section: -0912/80/090885-08 80100 I Macmulan Publishers Ltd 1980mentioning

confidence: 99%

Comparison of Personal Pollution Monitoring Techniques for Use in the Operating Room

Campbell

Davis²,

Halliday

et al. 1980

British Journal of Anaesthesia

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Three personal pollution monitors (adsorption tubes, diffusion dosimeters and evacuated bottles) have been tested, in routinely used operating rooms and under controlled laboratory conditions, for their accuracy and reproducibility relative to one another and to measurements by infra-red spectroscopy. All the techniques provide time-weighted average measurements of pollutant concentrations. Tubes and dosimeters measure halothane with greater accuracy than that required by N.I.O.S.H. regulations, but neither technique can measure inorganic pollutants such as nitrous oxide. The prototype evacuated bottles tested are unsatisfactory at their present stage of development for the measurement of both halothane and nitrous oxide concentrations. We believe that, at the present time, surveys of operating room pollution can best be carried out using adsorption tubes of diffusion dosimeters for personal halothane concentrations and a portable infra-red spectrometer for measurement of background nitrous oxide concentrations.

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Section: -0912/80/090885-08 80100 I Macmulan Publishers Ltd 1980mentioning

confidence: 99%

Comparison of Personal Pollution Monitoring Techniques for Use in the Operating Room

Campbell

Davis²,

Halliday

et al. 1980

British Journal of Anaesthesia

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“…The adsorption of gaseous compounds to sorbent materials by chromatographic equilibration is widely applied, e.g. for the determination of toxic volatile organic compounds (VOCs) [1], trace impurities [2,3] and studies on pollutants in the atmosphere [4][5][6][7][8][9] or other gaseous samples. For sampling, the sampled gas (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…For sampling, the sampled gas (i.e. the gas in which the volatiles are dissolved) passes through the sorbent material until both, the concentration of the analyte in the gas phase and in the sorbent reach the equilibrium state [6]. Individual components are trapped according to their partition coefficients, inversely related to their volatility [4].…”

Section: Introductionmentioning

confidence: 99%

Challenges of fast sampling of volatiles for thermal desorption gas chromatography - mass spectrometry

Marcillo

Weiß

Widdig

et al. 2020

Journal of Chromatography A

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Fast active sampling of volatile organic compounds (VOCs) under field conditions still is a great challenge especially when the exposure time to the source of emissions is a restricting factor. Hence, to identify ideal conditions for such applications, we systematically compared fast active sampling of VOCs collected on two common adsorbents under two regimes: first, very low gas volumes (from 300 mL) sampled at nominal flow rate and, second, sampling at the maximal applicable flow rate (0.5 L/min) before loss of sorbent material was experienced. For XAD-2 and Tenax TA, efficient sorbents for on-site VOC-sampling followed by thermal desorption GC-MS, significant differences in the signal response of volatile compounds were related not only to the varied experimental factors alone, but also to their interactions and to compound volatility. In the first regime, volatiles (~ 0.004-3.13 mM) from Tenax TA gave the highest signal response only above 800 mL sampled gas volume while at low concentrations (~ 0.004-0.12 mM), satisfactory recovery from XAD-2 required longer analyte-sorbent interaction. For the second regime, the relative recovery was severely impaired down to 73 ± 23 %, n=56 for Tenax TA and 72 ± 17 %, n=56 for XAD-2 at equimolar intermediate concentration, and 79 ± 11 %, n=84 for Tenax TA at high concentration compared to the relative recovery at standard flow rate. Neither Tenax TA nor XAD-2 provided a 100% total recovery (calculated using breakthrough values) for any of the evaluated compounds. Finally, two-way and three-way interactions identified in a multi-variable model, explained not only the dependence of the signal response on different experimental variables, but also their complex interplay affecting the recovery of the VOCs. In conclusion, we show for the first time that XAD-2, a material only recently introduced for the adsorption of volatiles from the gas phase, competes well with the standard material Tenax TA under conditions of fast sampling. Due to the similar absolute recovery with Tenax TA even at low concentration and with regard to the better detection limits, we consider XAD-2 the better choice for fast sampling of VOCs, particularly with low sample volumes at regular flow. For fast sampling with high flow rate, however, both sorbents might be selected only if the corresponding recovery loss can be accepted for the study.

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“…NIOSH has found personal sampling most valuable in evaluation of exposure to industrial chemicals. In this respect, sampling on solid sorbents has been particularly effective and convenient (12)(13)(14)(15)(16)(17)(18). Thus, it is not surprising that since the recognition of the carcinogenic potential of vinyl chloride several methods using solid sorbents for sampling of vinyl chloride have appeared (19)(20)(21)(22)(23)(24)(25).…”

mentioning

confidence: 99%

Gas-chromatographic determination of vinyl chloride in air samples collected on charcoal

Hill¹,

McCammon²,

Saalwaechter³

et al. 1976

Anal. Chem.

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Application of the method of chromatographic equilibration to air pollution studies

Cited by 27 publications

References 12 publications

Comparison of Personal Pollution Monitoring Techniques for Use in the Operating Room

Comparison of Personal Pollution Monitoring Techniques for Use in the Operating Room

Challenges of fast sampling of volatiles for thermal desorption gas chromatography - mass spectrometry

Gas-chromatographic determination of vinyl chloride in air samples collected on charcoal

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