MN Water Science Center: Pesticides in rain near Park Rapids, Minnesota, May through September 1993

USGS Water Science Center, Minnesota

Table 13.--Pesticides in rain near Park Rapids, Minnesota, May through September 1993

[Total number of samples is 15; mg/L, micrograms per liter; --, not detected]
Common name	Brand name	Percent detections	Maximum concentration ( mg/L)	Median concentration ( mg/L)	Date of maximum concentration
Herbicides
Alachlor	Lasso	87	0.57	0.05	May 25
Atrazine	Aatrex	67	.19	.03	June 8
Metolachlor	Dual	67	.62	.03	May 25
Ethalfluralin	Sonalan	47	.07	<.01	July 13
Metribuzin	Sencor	40	.05	<.01	July 13
EPTC	Eradicane	33	.04	<.01	May 25
Propachlor	Ramrod	27	.05	<.01	June 15
Tebuthiuron	Spike	27	.03	<.01	September 14
Cyanazine	Bladex	20	.26	<.02	June 8
Propazine	Milogard	20	.02	<.01	July 13
Triallate	Far-Go	20	.10	<.01	June 8
Pendimethalin	Prowl	13	.04	<.01	June 15
Propanil	Erban	13	.11	<.01	August 24
Simazine	Princep	13	.14	<.01	June 22
Terbacil	Sinbar	13	.04	<.02	September 14
Prometon	Pramitol	7	.02	<.01	August 24
Benfluralin	Benefin	0	<.01	--	--
Butylate	Sutan+	0	<.01	--	--
Pebulate	Tillam	0	<.01	--	--
Trifluralin	Treflan	0	<.01	--	--

Insecticides
Methyl parathion	Penncap-M	40	.06	<.02	August 3
Chlorpyrifos	Lorsban	20	.03	<.01	May 11
Ethoprop	Mocap	13	.01	<.01	July 13
Terbufos	Counter	13	.29	<.01	June 22
Azinphos-methyl	Guthion	0	<.02	--	--
Diazinon	Diazinon	0	<.01	--	--
Lindane	Lindane	0	<.02	--	--
Malathion	Cythion	0	<.02	--	--
Permethrin	Ambush	0	<.01	--	--
Phorate	Thimet	0	<.01	--	--

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U.S. Department of the Interior \| U.S. Geological Survey URL: http://mn.water.usgs.gov/pubs/atmospheric/table13.html Page Contact Information: Webmaster Page Last Modified: Tuesday, 13-Mar-2007 17:09:50 EDT