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 Province | Taiwan (China) |
Subject(s) |
Toxic and dangerous substances
|
Broad subject area(s) |
Chemical safety
|
Browse category(ies) |
Heterocyclic compounds
|