MN Water Science Center: Pesticides in rain, Minneapolis, Minnesota, April through September 1993.

USGS Water Science Center, Minnesota

Table 12.--Pesticides in rain, Minneapolis, Minnesota, April through September 1993.

[Total number of samples is 24; 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
Atrazine	Aatrex	75	2.3	.05	June 29
Metribuzin	Sencor	58	.03	.01	August 10
Alachlor	Lasso	54	.98	.01	May 25
EPTC	Eradicane	54	.46	.01	May 25
Metolachlor	Dual	46	.42	<.01	June 15
Cyanazine	Bladex	42	.33	<.02	June 1
Pendimethalin	Prowl	33	.18	<.01	June 8
Propachlor	Ramrod	29	.32	<.01	May 25
Simazine	Princep	25	.46	<.01	April 8
Propazine	Milogard	17	.03	<.01	June 29
Tebuthiuron	Spike	4	.01	<.01	April 8
Benfluralin	Benefin	0	<.01	--	--
Butylate	Sutan+	0	<.01	--	--
Ethalfluralin	Sonalan	0	<.01	--	--
Pebulate	Tillam	0	<.01	--	--
Prometon	Pramitol	0	<.01	--	--
Propanil	Erban	0	<.01	--	--
Terbacil	Sinbar	0	<.02	--	--
Triallate	Far-Go	0	<.01	--	--
Trifluralin	Treflan	0	<.01	--	--

Insecticides
Methyl parathion	Penncap-M	38	.10	<.02	September 14
Chlorpyrifos	Lorsban	25	.01	<.01	August 4
Terbufos	Counter	21	.08	<.01	April 8
Azinphos-methyl	Guthion	0	<.02	--	--
Diazinon	Diazinon	0	<.01	--	--
Ethoprop	Mocap	0	<.01	--	--
Lindane	Lindane	0	<.02	--	--
Malathion	Cythion	0	<.02	--	--
Permethrin	Ambush	0	<.01	--	--
Phorate	Thimet	0	<.01	--	--

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