Spectrum of Atrazine at 0.1 ppb in Lettuce after subtraction before and after peak x103+ESI Scan(5.470-5.484 min,2 scans)Frag=120.0V Pest MX_20 Lettuce_01 ppb in 1_3 water.d Subtract(2) 8 6- 218.0983 4 217.1230 2 x103 +ESI Scan(5.417-5.431 min,2 scans)Frag=120.0V Pest MX_20 Lettuce_01 ppb in 1_3 water.d 4 3 2 1 0 x10 3 +ESI Scan (5.523-5.537 min,2 scans)Frag=120.0V Pest MX_20 Lettuce_01 ppb in 1_3 water.d 1.5 1 0.5 215.6215.8 216216.2 218.6218.8 Pesticide Analysis with New Agilent Jet Agilent Technologies Page25 14.200 Spectrum of Atrazine at 0.1 ppb in Lettuce after subtraction before and after peak subtraction before and after peak 3 x10 6 8 +ESI Scan (5.470-5.484 min, 2 scans) Frag=120.0V Pest MX_20 Lettuce_01 ppb in 1_3 water.d Subtract (2) 216.1011 (M+H)+ 218.0983 0 2 4 217.1230 3 x10 4 +ESI Scan (5.417-5.431 min, 2 scans) Frag=120.0V Pest MX_20 Lettuce_01 ppb in 1_3 water.d 0 1 2 3 4 3 x10 1 1.5 +ESI Scan (5.523-5.537 min, 2 scans) Frag=120.0V Pest MX_20 Lettuce_01 ppb in 1_3 water.d 0 0.5 Counts vs. Mass-to-Charge (m/z) 215.6 215.8 216 216.2 216.4 216.6 216.8 217 217.2 217.4 217.6 217.8 218 218.2 218.4 218.6 218.8 Pesticide Analysis with New Agilent Jet Stream Technology Page 25 April 14, 2009