MN Water Science Center: Summary of pesticides in rain at all sites, May through September 1992

Table 4.--Summary of pesticides in rain at all sites, May through September 1992

[Total number of samples is 71 from 6 sites (Icelandic State park, Park Rapids, Princeton, Minneapolis, Crystal Springs, and Lamberton) Laboratory analysis conducted by Dee Mueller and Gary Horvath, Laboratory Services Division, Minnesota Department of Agriculture; mg/L, micrograms per liter; --, not determined]
Common name	Brand name	Percent detection	Maximum concentration ( mg/L)	Date of maximum concentration	Site of maximum concentration
Herbicides
Atrazine	Aatrex	18	2.2	May 26	Lamberton
Alachlor	Lasso	16	2.0	May 26	Lamberton
Cyanazine	Bladex	9	4.4	May 26	Lamberton
Metolachlor	Dual	9	.05	May 26	Lamberton
EPTC	Eradicane	1	.10	May 19	Crystal Springs
Ethalfluralin	Sonalan	0	<.20	--	--
Metribuzin	Sencor	0	<.20	--	--
Pendimethalin	Prowl	0	<.10	--	--
Prometon	Pramitol	0	<.20	--	--
Propachlor	Ramrod	0	<.25	--	--
Propazine	Milogard	0	<.25	--	--
Trifluralin	Treflan	0	<.10	--	--
Insecticides
Chlorpyrifos	Lorsban	0	<.05	--	--
Diazinon	Diazinon	0	<.12	--	--
Fonofos	Dyfonate	0	<.12	--	--
Methyl parathion	Penncap-M	0	<.10	--	--
Phorate	Thimet	0	<.25	--	--
Terbufos	Counter	0	<.15	--	--
Herbicide degradation products
Deethyl atrazine		0	<.50	--	--
Deisopropyl atrazine		0	<.50	--	--

Table 4.--Summary of pesticides in rain at all sites, May through September 1992

[Total number of samples is 71 from 6 sites (Icelandic State park, Park Rapids, Princeton, Minneapolis, Crystal Springs, and Lamberton) Laboratory analysis conducted by Dee Mueller and Gary Horvath, Laboratory Services Division, Minnesota Department of Agriculture; mg/L, micrograms per liter; --, not determined]

Common name

Brand name

Percent detection

Maximum concentration

( mg/L)

Date of maximum concentration

Site of maximum concentration

Herbicides

Atrazine

Aatrex

2.2

May 26

Lamberton

Alachlor

Lasso

2.0

May 26

Lamberton

Cyanazine

Bladex

4.4

May 26

Lamberton

Metolachlor

Dual

.05

May 26

Lamberton

EPTC

Eradicane

.10

May 19

Crystal Springs

Ethalfluralin

Sonalan

<.20

Metribuzin

Sencor

<.20

Pendimethalin

Prowl

<.10

Prometon

Pramitol

<.20

Propachlor

Ramrod

<.25

Propazine

Milogard

<.25

Trifluralin

Treflan

<.10

Insecticides

Chlorpyrifos

Lorsban

<.05

Diazinon

<.12

Fonofos

Dyfonate

<.12

Methyl parathion

Penncap-M

<.10

Phorate

Thimet

<.25

Terbufos

Counter

<.15

Herbicide degradation products

Deethyl atrazine

<.50

Deisopropyl atrazine

<.50

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