An evaluation of a new desorption technique for air sampling sorbent tubes. 1987

L B Coyne, and J S Warren, and C S Cerbus

Air sampling sorbent tubes have been used for many years in determining concentrations of chemicals in the work environment. The conventional way to desorb analytes from the sorbents involves physical removal and transfer of the sorbent from the tube to a vial containing desorption solution. A new desorption technique, whole tube desorption--which involves adding the glass tube containing the sorbent to the vial containing the desorption solvents--has been evaluated. With this technique there is no transfer of sorbent out of the glass tube. Recovery efficiencies for several chemicals including ethylene oxide, methylene chloride and styrene were comparable to those obtained using traditional solvent desorption procedures. The utilization of this new desorption technique will involve a simple modification in the design of commercially available sorbent tubes so that the front and back sections can be physically separated. This new technique allows for a significant reduction in the time spent in the desorption of air sampling sorbent tubes and easier adaptation to laboratory robotic systems.

UI MeSH Term Description Entries
D008752 Methylene Chloride A chlorinated hydrocarbon that has been used as an inhalation anesthetic and acts as a narcotic in high concentrations. Its primary use is as a solvent in manufacturing and food technology. Dichloromethane,Methylene Bichloride,Methylene Dichloride,Solaesthin,Bichloride, Methylene,Chloride, Methylene,Dichloride, Methylene
D002606 Charcoal An amorphous form of carbon prepared from the incomplete combustion of animal or vegetable matter, e.g., wood. The activated form of charcoal is used in the treatment of poisoning. (Grant & Hackh's Chemical Dictionary, 5th ed) Activated Charcoal,Actidose,Actidose-Aqua,Adsorba,Carbomix,Charbon,CharcoAid,CharcoCaps,Charcodote,Formocarbine,Insta-Char,Kohle-Compretten,Kohle-Hevert,Kohle-Pulvis,Kohle-Tabletten Boxo-Pharm,Liqui-Char,Norit,Ultracarbon,Charcoal, Activated
D000042 Absorption The physical or physiological processes by which substances, tissue, cells, etc. take up or take in other substances or energy.
D000395 Air Pollutants, Occupational Toxic air-borne matter related to work performed They are usually produced by the specific nature of the occupation. Occupational Air Pollutants,Pollutants, Occupational Air
D013343 Styrenes Derivatives and polymers of styrene. They are used in the manufacturing of synthetic rubber, plastics, and resins. Some of the polymers form the skeletal structures for ion exchange resin beads.
D014241 Trichloroethylene A highly volatile inhalation anesthetic used mainly in short surgical procedures where light anesthesia with good analgesia is required. It is also used as an industrial solvent. Prolonged exposure to high concentrations of the vapor can lead to cardiotoxicity and neurological impairment. Ethinyl Trichloride,Trichloroethene,Trielina,Trilene,Trichloride, Ethinyl
D015084 2,4-Dichlorophenoxyacetic Acid An herbicide with irritant effects on the eye and the gastrointestinal system. 2,4-D,2,4-Dichlorophenoxyacetic Acid, Ammonium Salt,2,4-Dichlorophenoxyacetic Acid, Lithium Salt,2,4-Dichlorophenoxyacetic Acid, Potassium Salt,2,4-Dichlorophenoxyacetic Acid, Sodium Salt,Monosan,2,4 Dichlorophenoxyacetic Acid

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