Studies on the environmental persistence of S-31183 (pyriproxyfen): adsorption onto organic matter and potential for leaching through soil.
Analytical methods were developed to allow the extraction and analysis of S-31183 (pyriproxyfen), 2-[1-methyl-2-(4-phenoxyphenoxy)ethoxy]pyridine, in organic matter from animal waste-water lagoons. Analysis of water and organic debris from a treated lagoon showed that the active ingredient readily adsorbed onto organic matter. S-31183 persisted on organic matter for over a 2-month period, during which time the concentration decayed at an exponential rate. In leaching trials with four different soil types, over 50% of the active ingredient applied remained in the upper 6 cm of a 30-cm soil column; there was no indication of a rapid potential for downward migration. The use of S-31183 for treating wastewater lagoons at doses which are effective for mosquito control did not result in any apparent problems of environmental incompatibility.
Schaefer
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CH
Mosquito Control Research Laboratory, University of California, Parlier 93648.
Dupras
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EF
Mulligan
F S
FS
D000327:Adsorption; D000818:Animals; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D002851:Chromatography, High Pressure Liquid; D009033:Culicidae; D003612:Dairying; D004785:Environmental Pollutants / Q000737:chemistry* / Q000633:toxicity; D013058:Mass Spectrometry; D011679:Pupa / Q000187:drug effects; D011725:Pyridines / Q000737:chemistry* / Q000633:toxicity; D012722:Sewage / Q000032:analysis; D012987:Soil / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000633:toxicity
D004785:Environmental Pollutants; D011725:Pyridines; D012722:Sewage; D012987:Soil; D014874:Water Pollutants, Chemical; C055613:pyriproxyfen