scholarly journals GAS EXTRACTION GENERATION OF STANDARD GAS MIXTURES OF HIGH-TOXIC VOLATILE ORGANIC COMPOUNDS AT THE MAC LEVEL

2020 ◽  
Author(s):  
O.V. Rodinkov ◽  
A.R. Petrunina ◽  
M.E. Greg ◽  
A.S. Bugaychenko
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Mixtures ◽  
Gas Extraction ◽  
Volatile Organic ◽  
Standard Gas Mixtures ◽  
Standard Gas

Sprayed liquid–gas extraction of semi-volatile organophosphate malathion from air and contaminated surfaces

2018 ◽  
Vol 10 (21) ◽  
pp. 2503-2511 ◽  
Author(s):  
Mashaalah Zarejousheghani ◽  
Andreas Walte ◽  
Helko Borsdorf
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sampling Method ◽  
Air Sampling ◽  
Gas Extraction ◽  
Volatile Organic

In this study, a new air sampling method termed sprayed liquid–gas extraction (SLGE) was developed for semi-volatile organic compounds.

scholarly journals Evaluation of simple and easy method for the preparation of a standard gas of volatile organic compounds from their mixed solution.

1999 ◽  
Vol 48 (1) ◽  
pp. 121-127 ◽  
Author(s):  
K. IMAMURA ◽  
M. EGUCHI ◽  
S. OHIRA ◽  
T. TASHIRO ◽  
S. TADANO ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Mixed Solution ◽  
Easy Method ◽  
Volatile Organic ◽  
Standard Gas

Polymer coated quartz crystal microbalance sensors for detection of volatile organic compounds in gas mixtures

2007 ◽  
Vol 597 (2) ◽  
pp. 223-230 ◽  
Author(s):  
Pengchao Si ◽  
John Mortensen ◽  
Alexei Komolov ◽  
Jens Denborg ◽  
Preben Juul Møller
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Gas Mixtures ◽  
Volatile Organic

Flammability of gas mixtures containing volatile organic compounds and hydrogen

2000 ◽  
Vol 13 (3-5) ◽  
pp. 377-384 ◽  
Author(s):  
Kevin J. Liekhus ◽  
Isaac A. Zlochower ◽  
Kenneth L. Cashdollar ◽  
Sinisa M. Djordjevic ◽  
Cindy A. Loehr
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Gas Mixtures ◽  
Volatile Organic

scholarly journals Photochemical aging of volatile organic compounds associated with oil and natural gas extraction in the Uintah Basin, UT, during a wintertime ozone formation event

2015 ◽  
Vol 15 (10) ◽  
pp. 5727-5741 ◽  
Author(s):  
A. R. Koss ◽  
J. de Gouw ◽  
C. Warneke ◽  
J. B. Gilman ◽  
B. M. Lerner ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Natural Gas ◽  
Organic Compounds ◽  
Emission Rate ◽  
Secondary Compounds ◽  
Gas Extraction ◽  
Volatile Organic ◽  
Carbon Mass ◽  
Oil And Natural Gas ◽  
Emission Ratios

Abstract. High concentrations of volatile organic compounds (VOCs) associated with oil and natural gas extraction were measured during a strong temperature inversion in the winter of 2013 at a rural site in the Uintah Basin, Utah. During this period, photochemistry enhanced by the stagnant meteorological conditions and concentrated VOCs led to high ozone mixing ratios (150 ppbv). A simple analysis of aromatic VOCs measured by proton-transfer-reaction mass-spectrometry (PTR-MS) is used to estimate (1) VOC emission ratios (the ratio of two VOCs at the time of emission) relative to benzene, (2) aromatic VOC emission rates, and (3) ambient OH radical concentrations. These quantities are determined from a best fit to VOC : benzene ratios as a function of time. The main findings are that (1) emission ratios are consistent with contributions from both oil and gas producing wells; (2) the emission rate of methane (27–57 × 103 kg methane h−1), extrapolated from the emission rate of benzene (4.1 ± 0.4 × 105 molecules cm−3 s−1), agrees with an independent estimate of methane emissions from aircraft measurements in 2012; and (3) calculated daily OH concentrations are low, peaking at 1 × 106 molecules cm−3, and are consistent with Master Chemical Mechanism (MCM) modeling. The analysis is extended to photochemical production of oxygenated VOCs measured by PTR-MS and is able to explain daytime variability of these species. It is not able to completely reproduce nighttime behavior, possibly due to surface deposition. Using results from this analysis, the carbon mass of secondary compounds expected to have formed by the sixth day of the stagnation event was calculated, then compared to the measured mass of primary and secondary compounds. Only 17% of the expected secondary carbon mass is accounted for by gas phase, aerosol, and snow organic carbon measurements. The disparity is likely due to substantial amounts of unquantified oxygenated products.

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