[Exposure levels and biological monitoring of pyrethroids in spraymen].
In order to assess the exposure levels of pyrethroids in spraymen, 50 adult male cotton growers were selected as monitoring subjects. The exposure levels were evaluated by measuring the air concentration, dermal exposure and urinary content of pyrethroids. The results showed that the air concentrations of deltamethrin at breathing zone were 0.02-0.32 micrograms/m3 in deltamethrin exposed group, and of fenvalerate at 0.69-1.09 micrograms/m3 in exposed spraymen. The dermal exposure was more prominent and indicated the most significant route of absorption. In one-day spraying, the urinary deltamethrin was not detected at 12 hours after the beginning of exposure while the fenvalerate was still detected 24 hours after starting exposure. However, both can be consecutively detected even two days after cessation of a three-day spraying. Health effects were investigated by interviews and physical examination. 32 out of 50 spraymen at the above exposure levels complained of abnormal facial sensations. No acute pyrethroid poisoning cases were found.
Zhang
Z W
ZW
Institute of Occupational Medicine, Chinese Academy of Preventive Medicine, Beijing.
D000328:Adult; D000393:Air Pollutants / Q000032:analysis*; D006801:Humans; D007306:Insecticides / Q000032:analysis; D008297:Male; D009570:Nitriles; D010292:Paresthesia / Q000139:chemically induced; D010573:Pesticide Residues / Q000032:analysis*; D011722:Pyrethrins / Q000009:adverse effects / Q000032:analysis*
D000393:Air Pollutants; D007306:Insecticides; D009570:Nitriles; D010573:Pesticide Residues; D011722:Pyrethrins; C017180:decamethrin; C017690:fenvalerate