8277

• UCREFRP Catalog Number: 8277
• Author: Bauch, N. J. and N. E. Spahr.
• Title: Pesticides in Surface Waters of the Upper Colorado River Basin, Colorado, 1996-98.
• USFW Year: 2000.
• USFW - Doc Type: Water-Resources Investigations Report 00-4005,
• Copyright Material: NO

~ Table 6. Concentrations and relative percent differences for pesticides detected in replicate samples-Continued
[µg/L, microgram per liter; <, less than; nc, not computed; GC/MS, gas chromatography/mass spectrometry; HPLC, high-performance liquid chromatography]
fD
N
m
rn
i
co

Pesticide Concentration
in replicates
(µg/L) Relative
percent
difference
Pesticide Concentration
in replicates
(µg/L) Relative
percent
difference
Pesticide Concentration
in replicates
(µg/I,) Relative
percent
difference
Deethylatrazine 0.009 25 Diazinon <0.002 EPTC 0.053
(continued) 0.007 (continued) 0.002 (continued) 0.054
<0.002 nc 0.054 0.0 - 5.7
0.007 11 - 35 <0.002 0.051
0.009
0.010
0.008
Dicamba 0.150 0.0 Ethalfluralin 0.009
0.150 0.008
0.006 0.0 - 18 0.008 0.0 - 22
0.005 0.010
0.005
0.006
EPTC 0.003 0.0
0.003
0.004 0.0 Metolachlor 0.003 40
0.004 0.002
0.002 40
0.003
0.003 0.005 18
<0.002 0.006
<0.002 nc 0.199 1.5
<0.002 0.202
<0.002
<0.002
0.003 0.0 0.061 0.004 nc
0.003 0.046 <0
002
0.046 0.0 - 28 .
0.059
0.043
0.044
Diazinon 0.004 22 0.003 0.0 0.043 0.0 - 4.7
0.005 0.003 0.042