Occupational exposure to 4,4'-bipyridyl vapor and aerosol during paraquat manufacturing

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      <subfield code="a">Occupational exposure to 4,4'-bipyridyl vapor and aerosol during paraquat manufacturing</subfield>
      <subfield code="c">Hsien-Wen Kuo, Chih-Shan Li, Jung-Der Wang</subfield>
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      <subfield code="a">In this field study, the mass concentrations of vapour and aerosol phases of 4,4'-bipyridyl at different locations were determined in the paraquat manufacturing environment. Meanwhile, the enclosure efficiency of a hood attached to a suction tube for both aerosol and vapor phases of 4,4'-bipyridyl was evaluated</subfield>
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      <subfield code="t">American Industrial Hygiene Association journal</subfield>
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      <subfield code="g">Vol. 54, nº 8, August 1993 ; p. 440-445</subfield>
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