diazinon, trichloronate, coumaphos, tetraethylpyrophosphate, mevinphos, monocrotophos, naled, parathion, ronnel, sulfotepp
, sulprofos, tetrachlorvinphos, and protothiofos.
The findings indicate that the recommended PPE may be inadequate to protect workers using sulfotepp fumigants from pesticide poisoning.
The patient was a pesticide applicator employed at a greenhouse and had applied sulfotepp fumigants (Plantfume 103 and Fulex)(*) the previous night.
The patient reported onset of symptoms shortly after igniting the sulfotepp fumigant canisters in the first of four interconnected greenhouses where chrysanthemums, poinsettias, and other plants were grown.
Although he had applied other fumigants in the past, this was the first time he had applied sulfotepp and the first time the chemical was used in this greenhouse.
Of these, 43 (81%) reported ever using fumigants, and 30 (70%) of the 43 reported using sulfotepp. Of the 43 companies using any type of fumigant, 33 (77%) reported that workers used respirators during fumigant application, including five that used respirators with an independent supply of compressed air.
The findings of the TDH investigation indicate that the acute illness among workers in this report most likely was associated with exposure to the sulfotepp fumigant and underscore the importance of reporting pesticide poisonings.
The sulfotepp label instructions state that applicators and other handlers must use "a respirator with either an organic vapor-removing cartridge with a prefilter approved for pesticides (approval prefix TC-23C) or a canister approved for pesticides (approval prefix TC-14G)" (3,4).
Environmental Protection Agency (EPA) received 23 reports of illness in persons occupationally exposed to sulfotepp (EPA, unpublished data, 1996); 70% of these persons were referred to health-care facilities, and 7% were hospitalized.