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Showing 1-30 of 48 results for "30139-U" within Papers
Alejandra Ribes et al.
Journal of chromatography. A, 1140(1-2), 44-55 (2006-12-26)
An analytical method based on thermal desorption (TD) coupled to gas chromatography (GC) and mass spectrometry detection (MS) has been developed and validated for the determination of a wide range of odor nuisance and air-quality volatile organic compounds (VOC) in
S Ghittori et al.
Giornale italiano di medicina del lavoro, 10(4-5), 201-205 (1988-07-01)
A laboratory study, using generated atmosphere containing 0.14/23.3 mg/m3 of Benzene, was conducted to adapt an existing industrial hygiene monitoring method for measuring low concentrations of Benzene. This method was developed to determine concentrations of Benzene in the ambient air
E Gallego et al.
Waste management (New York, N.Y.), 32(12), 2469-2481 (2012-08-14)
Municipal solid waste treatment facilities are generally faced with odorous nuisance problems. Characterizing and determining the odorous charge of indoor air through odour units (OU) is an advantageous approach to evaluate indoor air quality and discomfort. The assessment of the
Florian Gahleitner et al.
Bioanalysis, 5(18), 2239-2247 (2013-09-24)
In-community non-invasive identification of asthma-specific volatile organic compounds (VOCs) in exhaled breath presents opportunities to characterize phenotypes, and monitor disease state and therapies. The feasibility of breath sampling with children and the preliminary identification of childhood asthma markers were studied.
E Gallego et al.
Talanta, 85(1), 662-672 (2011-06-08)
A simple comparison is made to evaluate the relative performance of active and passive sampling methods for the analysis of volatile organic compounds (VOCs) in ambient air. The active sampling is done through a multi-sorbent bed tube (Carbotrap, Carbopack X
William A McClenny et al.
Journal of environmental monitoring : JEM, 4(5), 695-705 (2002-10-29)
Ambient air spiked with 1-10 ppbv concentrations of 41 toxic volatile organic compounds (VOCs) listed in US Environmental Protection Agency (EPA) Compendium Method TO-14A was monitored using solid sorbents for sample collection and a Varian Saturn 2000 ion trap mass
S Ghittori et al.
Journal of toxicology and environmental health, 38(3), 233-243 (1993-03-01)
Benzene concentrations in urine samples (Cu, ng/L) from 110 workers exposed to benzene in chemical plants and gasoline pumps were determined by injecting urine supernate into a gas chromatograph. The urine was saturated with anhydrous N2SO4 to facilitate the passage
E Biondi et al.
Talanta, 129, 422-430 (2014-08-17)
A commercial electronic nose (e-nose) equipped with a metal oxide sensor array was trained to recognize volatile compounds emitted by potatoes experimentally infected with Ralstonia solanacearum or Clavibacter michiganensis subsp. sepedonicus, which are bacterial agents of potato brown and ring
K S Chen et al.
Journal of the Air & Waste Management Association (1995), 53(1), 102-112 (2003-02-06)
Twenty-five volatile organic compounds (VOCs) up to C10 were measured using Carbotrap multibed thermal adsorption tubes during the morning and afternoon rush hours on four different days in all three traffic tunnels in Kaohsiung, Taiwan. A gas chromatograph (GC) equipped
T Larsson et al.
Analytical chemistry, 75(20), 5584-5591 (2004-01-09)
Instrumentation and methodology for determination of the gaseous mercury species Hg0, (CH3)2Hg, and CH3Hg+ has been developed. The method is based on continuous addition of gaseous isotopically enriched Hg species (tracers) at the point of sample acquisition, in combination with
Roy M Harrison et al.
Research report (Health Effects Institute), (143), 3-96 (2009-12-17)
The overall aim of our investigation was to quantify the magnitude and range of individual personal exposures to a variety of air toxics and to develop models for exposure prediction on the basis of time-activity diaries. The specific research goals
Rafał Borusiewicz et al.
Journal of forensic sciences, 52(1), 70-74 (2007-01-11)
The aim of research was to compare two adsorbents, Tenax TA and Carbotrap 300, to evaluate their usefulness as passive adsorbents of flammable liquids compounds. It was also to determine whether Carbotrap 300 could be used in a passive adsorption
John D Donaldson et al.
Journal of AOAC International, 86(1), 39-43 (2003-02-28)
A fast and accurate analytical method, which uses commercially available adsorbents (Tenax TA, Carbotrap B and C, and Carbosieve S-III), was developed for the sampling and determination of aromatic hydrocarbons, chloroaromatic compounds, and 2,3,7,8-tetrachlorodibenzo-p-dioxin. The breakthrough volume data show that
Maria Basanta et al.
The Analyst, 135(2), 315-320 (2010-01-26)
The rapid, accurate and non-invasive diagnosis of respiratory disease represents a challenge to clinicians, and the development of new treatments can be confounded by insufficient knowledge of lung disease phenotypes. Exhaled breath contains a complex mixture of volatile organic compounds
Jun Wang et al.
Environmental science & technology, 36(4), 797-808 (2002-03-07)
Laboratory experiments were conducted in a two-stage horizontal muffle furnace in order to monitor emissions from batch combustion of polystyrene (PS) and identify conditions that minimize them. PS is a dominant component of municipal and hospital waste streams. Bench-scale combustion
Wojciech Kornacki et al.
The Analyst, 130(5), 632-636 (2005-04-27)
Graphitized carbons, Carbopack X, Carbograph 5TD and Carbotrap B, used to enrich samples of C(3)-C(4) alcohols determined in the atmospheric air produce experimental artefacts. After thermal desorption, recoveries for alcohols are much smaller than unity with a concomitant appearance of
D M Obenland et al.
Journal of agricultural and food chemistry, 47(12), 5184-5188 (1999-12-22)
A number of volatile compounds that contribute to orange flavor were quantified following high-temperature forced-air (HTFA) treatment of the fruit to determine if a relationship exists between the flavor loss that is observed following HTFA treatment and the volatile composition
Jan Pollmann et al.
Journal of chromatography. A, 1134(1-2), 1-15 (2006-10-03)
Nine commercial solid adsorbent materials (in order of decreasing surface area: Carboxen 1000, Carbosieve S III, molecular sieve 5A, molecular sieve 4A, silica gel, Carboxen 563, activated alumina, Carbotrap and Carboxen 1016) were investigated for their ability to trap and
M L Matney et al.
AIHAJ : a journal for the science of occupational and environmental health and safety, 61(1), 69-75 (2000-04-20)
The sampling capability of Tenax-TA tubes, used in the National Aeronautics and Space Administration's solid sorbent air sampler to trap and concentrate contaminants from air aboard spacecraft, was improved by incorporating two sorbents within the tubes. Existing tubes containing only
C Sarbach et al.
Annales pharmaceutiques francaises, 71(4), 203-215 (2013-07-10)
The effect of oxygen on markers of oxidative stress has been partially elucidated. Volatile organic compounds (VOCs) are created during the oxidative burst and excreted in the human alveolar breath, which indeed contains biomarkers. A general concept including collection, separation
Marco D'Alessandro et al.
Chemical senses, 30(9), 739-753 (2005-10-26)
Many parasitic wasps (parasitoids) exploit volatile organic compounds (VOCs) emitted by herbivore-infested plants in order to locate their hosts, but it remains largely unknown which specific compounds within the volatile blends elicit the attractiveness to parasitoids. One way of studying
Eva Gallego et al.
The Science of the total environment, 618, 1440-1448 (2017-11-08)
1,3-Butadiene is a carcinogenic compound that can be emitted to the atmosphere from several sources, such as the combustion of organic matter or traffic. However, petrochemical industry is one of the main origins of this compound. Several campaigns (2013-2017) were
M L Fiorentino et al.
La Medicina del lavoro, 81(2), 107-118 (1990-03-01)
Benzene is a widely diffuse solvent (atmosphere, cigarette smoke, some foods); in the industrial environment benzene is currently present at concentrations of ppm. A valid method of biological monitoring that is easy to perform is needed for assessing occupational and
Fabienne Palluau et al.
Environmental monitoring and assessment, 127(1-3), 177-187 (2006-08-10)
By using a dynamic dilution system, the atmospheric measurement of 11 selected toxics VOCs (ethylene, acetylene, propene, 1-butene, 1,3-butadiene, 1-pentene, 1-hexene, benzene, toluene, ethylbenzene, m+p-xylene) from the list WHO of 1996 and TO-14 method of US EPA by preconcentration by
A R Bahrami
Archives of environmental health, 56(4), 380-383 (2001-09-27)
Transportation sources have created a major hydrocarbon pollution problem in the ambient air of Tehran. The authors used a Carbotrap tube to determine volatile organic compounds in air. Such compounds can be desorbed thermally and analyzed with gas chromatography-mass spectrometry.
Yifei Sun et al.
Journal of environmental sciences (China), 25(1), 213-219 (2013-04-17)
A group parameter approach using "total organic halogen" is effective for monitoring gaseous organic halogen compounds, including fluorine, chlorine, and bromine compounds, generated from combustion. We described the use of barrier-discharge radiofrequency-helium-plasma/atomic emission spectrometry, for the detection of semi- and
Qiang Gao et al.
Talanta, 101, 198-202 (2012-11-20)
A sensitive and reliable method was developed for the determination of volatile components emitted from cut tobacco processing using thermal desorption (TD) followed by gas chromatography-mass spectrometry (GC-MS). In the work, to obtain the optimal sorbent, three commercial sorbents were
W A McClenny et al.
Journal of chromatography. A, 813(1), 101-111 (1998-08-11)
An evaluation of performance criteria for US Environmental Protection Agency Compendium Method TO-17 for monitoring volatile organic compounds (VOCs) in air has been accomplished. The method is a solid adsorbent-based sampling and analytical procedure including performance criteria for four merit
Pascale A Baya et al.
Analytica chimica acta, 786, 61-69 (2013-06-26)
This study evaluates the suitability of commercially available adsorbents for the measurement of gaseous organic mercury species namely monomethylmercury (MMHg) and dimethylmercury (DMHg). Bond Elut ENV (BE), a new generation of divinylbenzene (DVB), is evaluated the first time for simultaneous
Y H Lee et al.
The Science of the total environment, 304(1-3), 107-113 (2003-03-29)
A procedure for sampling gaseous methylmercury (MeHg) in ambient air using a refluxing mist chamber (MC) has been developed. The MC consists of a glass bulb with an air inlet tube at the bottom. Via a capillary mounted adjacent to
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