Scientific Investigations Report 2007–5180
U.S. GEOLOGICAL SURVEY
Scientific Investigations Report 2007–5180
Figure 3. Selected recoveries of pesticide from laboratory-spiked organic-grade blank water and spiked environmental water, Yakima River Basin, Washington, 2000. Laboratory-spiked samples were analyzed between February 1999 and December 2001. The five pesticides shown were selected to represent typical variations in performance on the two analytical methods.