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Document ID (ISN)60089
CIS number 93-902
ISSN - Serial title 0002-8894 - American Industrial Hygiene Association Journal
Year 1992
Convention or series no.
Author(s) Kuo H.W., Wang J.D., Lin J.M.
Title Determination of 4,4'-bipyridine vapor
Bibliographic information Aug. 1992, Vol.53, No.8, p.514-518. Illus. 14 ref.
Abstract 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.
Descriptors (primary) personal sampling; 4,4'-dipyridyl; desorption efficiency; sampling and analysis; air sampling; toxic gases
Descriptors (secondary) description of equipment; description of technique; paraquat
Document type D - Periodical articles
Country / State or ProvinceTaiwan (China)
Subject(s) Toxic and dangerous substances
Broad subject area(s) Chemical safety
Browse category(ies) Heterocyclic compounds