|Document ID (ISN)||60089|
|ISSN - Serial title
||0002-8894 - American Industrial Hygiene Association Journal
|Convention or series no.
||Kuo H.W., Wang J.D., Lin J.M.
||Determination of 4,4'-bipyridine vapor
||Aug. 1992, Vol.53, No.8, p.514-518. Illus. 14 ref.
||An air-sampling and analytical method was developed and evaluated for the personal monitoring of 4,4'-bipyridine vapour, the major intermediate product in the manufacturing of paraquat. 4,4'-bipyridine vapour was collected in XAD-tubes, desorbed from the tubes with diethyl ether, and determined by high-performance liquid chromatography. The desorption efficiency of XAD-2 sorbent was 100.7% for the spikes between 0.6 and 12.0µg. A dynamic U-tube system was used for testing the air sampling of known quantities of 4,4'-bipyridine into XAD-2 tubes. An average vapour collection of 96.3% was obtained at average concentrations ranging between 0.07 and 0.7mg/m3 under controlled temperature and humidity conditions. The detection limit of the analytical method was 2ng of 4,4'-bipyridine corresponding to a 0.5µg/sample. It is believed that this method is suitable for personal monitoring of 4,4'-bipyridine vapour.
||personal sampling; 4,4'-dipyridyl; desorption efficiency; sampling and analysis; air sampling; toxic gases
||description of equipment; description of technique; paraquat
||D - Periodical articles
|Country / State or Province||Taiwan (China)|
||Toxic and dangerous substances
|Broad subject area(s)