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MAP20071020197Kuo, Hsien-WenDetermination of 4,4'-bipyridine vapor / Hsien-Wen Kuo, Jung-Der Wang, Jia-Ming LinSumario: Paraquat has been extensively used as a herbicide in Taiwan because of its superior herbicidal effect. 4,4'-bipyridine is the major intermediate product in paraquat manufacturing. In this paper, the development and validation of an air-sampling method that used XAD-2 for the collection of 4,4'-bipyridine gas is described. Also, this study assessed the desorption efficiency, recovery, and stability of sorbent 4,4'-bipyridineEn: American Industrial Hygiene Association journal. - Akron, Ohio. - Vol. 53, nº 8, August 1992 ; p. 514-5181. Higiene industrial. 2. Contaminantes químicos. 3. Vapores. 4. Productos químicos. 5. Paraquat. 6. Muestreos. 7. Taiwan. I. Wang, Jung-Der. II. Lin, Jia-Ming. III. Title. IV. Título: American Industrial Hygiene Association journal.