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.
Mosquito Control Research Laboratory, University of California, Parlier 93648.
C H
CH
Schaefer
E F
EF
Dupras
F S
FS
Mulligan
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