Solid adsorbents were used to concentrate organic compounds in air, and sol vents were thermally desorbed into a gas-chromatographic column for quanti tation. Organic compounds in air or solvent samples in parts per billion level were determined easily. Operation of this technique took about 10 min.
National Institute for Occupational Safety and Health: NIOSH Manual of Analytical Methods, ed 3. Cincinnati, Division of Physical Sciences and Engineering , 1984.
2.
Institute of Occupational Medicine, Chinese Academy of Preventive Medicine: Analysis of Air Pollutants in the Workplace , ed 3. Beijng, People's Health Publishing House, 1990.
3.
Hang SP: Determination of Toxic Substance in Air, ed 2. Beijing, People's Health Publishing House, 1986.
4.
International Organization for Standardization : Workplace air - determination of vinyl chloride - Charcoal tube/gas chromatographic method. International Organization for Standardization1986;ISO/DIS8762.
5.
Hang SP, Yang XZ, Han KQ, Liu YW, Zhang YA: Concentrator for gas chromatograph. Acta Acad Med Sin1981;3:188-194.
6.
Liu W., Hang SP: A GC solution-concentration method for the determination of trace ethylbenzene in air. J Hyg Res1987;16:10-13.
