Results 191 to 200 of about 8,462 (221)
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Food Additives and Contaminants, 2006
An investigation was undertaken to establish the concentration in paper products of dehydroabietic (DHA) and abietic (AA) resin acids, present in rosin, which are major toxicants of pulp- and paper-mill effluent. Their migration was studied from paper and paperboard products into various food-simulating solvents and the substitute fatty food simulant ...
Asako, Ozaki +2 more
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An investigation was undertaken to establish the concentration in paper products of dehydroabietic (DHA) and abietic (AA) resin acids, present in rosin, which are major toxicants of pulp- and paper-mill effluent. Their migration was studied from paper and paperboard products into various food-simulating solvents and the substitute fatty food simulant ...
Asako, Ozaki +2 more
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Journal of Chromatography B, 2015
We developed a new device for the in vitro extraction of small molecule metabolites excreted from cancer cells. The extraction device, which was biocompatible and incubated with cancer cells, consists of a thin Tenax TA film deposited on the surface of a cylindrical aluminum rod.
Takuma, Nozoe +7 more
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We developed a new device for the in vitro extraction of small molecule metabolites excreted from cancer cells. The extraction device, which was biocompatible and incubated with cancer cells, consists of a thin Tenax TA film deposited on the surface of a cylindrical aluminum rod.
Takuma, Nozoe +7 more
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Biodegradation, 2012
The effectiveness of many bioremediation systems for PAH-contaminated soil may be constrained by low contaminant bioaccessibility due to limited aqueous solubility or large sorption capacity. Information on the extent to which PAHs can be readily biodegraded is of vital importance in the decision whether or not to remediate a contaminated soil.
Mingming, Sun +5 more
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The effectiveness of many bioremediation systems for PAH-contaminated soil may be constrained by low contaminant bioaccessibility due to limited aqueous solubility or large sorption capacity. Information on the extent to which PAHs can be readily biodegraded is of vital importance in the decision whether or not to remediate a contaminated soil.
Mingming, Sun +5 more
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Atmospheric Environment, 2010
Abstract Adsorbent tube materials, bed retainers and Tenax-TA were evaluated for their respective roles in adsorbing biogenic volatile organic compounds from air and their tendencies to cause chemical transformation of analytes upon thermal desorption.
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Abstract Adsorbent tube materials, bed retainers and Tenax-TA were evaluated for their respective roles in adsorbing biogenic volatile organic compounds from air and their tendencies to cause chemical transformation of analytes upon thermal desorption.
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Journal of Environmental Monitoring, 2008
The usability of the solid phase extraction method with Tenax-TA adsorbent for the forecasting of polycyclic aromatic hydrocarbon losses during sewage sludges composting has been evaluated in the present study. Four municipal sewage sludges were composted for 76 days. The PAH content in the sludges ranged from 3674 to 11 236 microg kg(-1).
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The usability of the solid phase extraction method with Tenax-TA adsorbent for the forecasting of polycyclic aromatic hydrocarbon losses during sewage sludges composting has been evaluated in the present study. Four municipal sewage sludges were composted for 76 days. The PAH content in the sludges ranged from 3674 to 11 236 microg kg(-1).
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Journal of the Chinese Chemical Society, 1992
AbstractWe have evaluated an analytical method for the determination of polycyclic aromatic hydrocarbons (PAHs) and sulfur compounds in air by means of adsorption/temperature‐programmed thermal desorption (ATPTD) with small bed volume (0.08g) Tenax‐TA cartridges, followed by a cryogenic trap in a precolumn with liquid nitrogen as an appropriate ...
Wen‐Fa Sye, Chun‐Yi Wu
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AbstractWe have evaluated an analytical method for the determination of polycyclic aromatic hydrocarbons (PAHs) and sulfur compounds in air by means of adsorption/temperature‐programmed thermal desorption (ATPTD) with small bed volume (0.08g) Tenax‐TA cartridges, followed by a cryogenic trap in a precolumn with liquid nitrogen as an appropriate ...
Wen‐Fa Sye, Chun‐Yi Wu
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Journal of Chromatography A, 2004
In this work the breakthrough volumes (BTVs) of volatile organic compounds (VOCs) on Tenax TA were determined in the -10 to 170 degrees C temperature range by using microtrap (MT) technology. The MT technology allowed experimental investigation of the temperature dependence of BTVs.
Antonín, Kroupa +3 more
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In this work the breakthrough volumes (BTVs) of volatile organic compounds (VOCs) on Tenax TA were determined in the -10 to 170 degrees C temperature range by using microtrap (MT) technology. The MT technology allowed experimental investigation of the temperature dependence of BTVs.
Antonín, Kroupa +3 more
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Chinese Journal of Chromatography, 2014
Migration investigations were carried out on paper food packaging in contact with dry food simulant Tenax TA. The aim was to explore the migration behaviours of 4-cumylphenol (CP) and 4-tert-butylphenyl salicylate (TBS) as potential contaminants, from paper materials to Tenax TA at different migration temperatures for variant migration times.
Wei, Han +3 more
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Migration investigations were carried out on paper food packaging in contact with dry food simulant Tenax TA. The aim was to explore the migration behaviours of 4-cumylphenol (CP) and 4-tert-butylphenyl salicylate (TBS) as potential contaminants, from paper materials to Tenax TA at different migration temperatures for variant migration times.
Wei, Han +3 more
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Wei sheng yan jiu = Journal of hygiene research, 2006
A method for monitoring low concentration of benzene, toluene, p-xylene, o-xylene (BTX) in ambient air is set up. The optimum of desorption and analysis parameter is selected.Tenax TA adsorption/thermal desorption/capillary gas chromatography is used.The relative standard deviation of benzene, toluene, p-xylene, o-xylene in ambient air are from 4.30 ...
Dongqun, Xu +6 more
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A method for monitoring low concentration of benzene, toluene, p-xylene, o-xylene (BTX) in ambient air is set up. The optimum of desorption and analysis parameter is selected.Tenax TA adsorption/thermal desorption/capillary gas chromatography is used.The relative standard deviation of benzene, toluene, p-xylene, o-xylene in ambient air are from 4.30 ...
Dongqun, Xu +6 more
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Journal of Chromatography A, 1994
Abstract A method for the determination of chloronitrobenzenes (CNBs) and chlorobenzene (CB) in air was developed. CNBs and CB were sampled on Tenax TA sampling tubes, thermally desorbed and analysed by capillary gas chromatography (cGC) with flame ionization detection.
S.F. Patil, S.T. Lonkar
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Abstract A method for the determination of chloronitrobenzenes (CNBs) and chlorobenzene (CB) in air was developed. CNBs and CB were sampled on Tenax TA sampling tubes, thermally desorbed and analysed by capillary gas chromatography (cGC) with flame ionization detection.
S.F. Patil, S.T. Lonkar
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