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130 matches found for Pesticides

US EPA Method 632: HPLC Analysis of Pesticides on Ascentis® C18

column Ascentis C18, 25 cm x 4.6 mm I.D., 5 µm particles (581325-U) column temp. 30 °C mobile phase [A] water; [B] acetonitrile gradient 10 to 50% B in 13 min; to 60% B in 10 min; to 90% B in 6 min; held for 5 min flow rate 1.0 mL/min sample as indicated in 16% acetonitrile in water injection 10 µL ...

US EPA Method 632: HPLC Analysis of Pesticides on Ascentis® C8

column Ascentis C8, 25 cm x 4.6 mm I.D., 5 µm particles (581425-U) column temp. 30 °C mobile phase [A] DI water; [B] acetonitrile gradient 15 to 25% B in 4 min; to 45% B in 40 min; to 60% B in 6 min; held for 15 min flow rate 1.0 mL/min sample as indicated in 16% acetonitrile in DI water injection 1...

GC Analysis of a 17-Component Pesticide Mix on SLB®-5ms (10 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

column SLB-5ms, 10 m x 0.10 mm I.D., 0.10 µm (28465-U) oven 40 °C (1 min), 80 °C/min to 160 °C, 5 °C/min to 340 °C (2 min) carrier gas helium, 0.52 mL/min sample 17-component pesticide mix, each analyte at 0.8-2.0 µg/mL in hexane:acetone (50:50) injection 0.5 µL10:1 split inj. temp. 280 °C MSD inter...

GC Analysis of Pesticides in Grapes on SLB®-5ms after QuEChERS Cleanup using Supel™ QuE PSA/C18

sample preparation Dispersive (QuEChERS) sample/matrix Thompson green seedless table grapes extraction tube Supel QuE Acetate extraction tube (55234-U) extraction process homogenize, add 15 mL of acetonitrile with 1% acetic acid; shake for 1 minute; add contents of Supel QuE acetate extraction tube;...

HPLC Analysis of Urea Pesticides on Discovery® Cyano

column Discovery Cyano, 15 cm x 4.6 mm I.D., 5 µm particles (59356-U) column temp. 20 °C mobile phase [A] water: [B] acetonitrile; (60:40, A:B) flow rate 2 mL/min injection 1 µL detector UV, 214 nm Categories Analytical Chromatography, Food & Beverage Analysis, Environmental Analysis, Pesticides & H...

GC Analysis of Agricultural Pesticides on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 50 °C (0.2 min), 100 °C/min to 100 °C, 5 °C/min to 250 °C, 15 °C/min to 325 °C (5 min) carrier gas helium, 30 cm/sec constant sample 10 ppm pesticides in ethyl acetate injection 1 µL, splitless (0.75 min) liner 2.6 mm I.D., straight inj. te...

GC Analysis of Pesticide Residues in Cannabis on SLB®-5ms after QuEChERS Extraction then QuEChERS Cleanup using Supel™ QuE Verde

sample preparation Solid Phase Extraction (QuEChERS, Dispersive) sample preparation place supernatant in amber low adsorption vial for GC/MS/MS analysis. sample/matrix ground cannabis, 1 gm extraction tube Supel QuE Citrate (55227-U) extraction process Add 10 mL water to sample, allow to sit for 30 ...

GC Analysis of Pesticides in Spaghetti Sauce on SLB®-5ms after QuEChERS Extraction then Cleanup using Supel QuE PSA/C18

sample preparation Concentrate 2 mL aliquot of cleaned extract to a final volume of 0.2 mL. sample/matrix Sample pretreatment: 10 g sample spiked at 10 ng/g; Sample:spaghetti sauce, marinara extraction tube Supel QuE Acetate (AC) tube (55234-U) extraction process Add 10 mL 1% acetic acid in acetonit...

LC/MS/MS Analysis of Neonicotinoid Pesticides in Dandelion Blossoms on Ascentis® Express C18 after Dispersive SPE (QuEChERS) using Supel™ QuE

sample preparation Dispersive (QuEChERS) sample/matrix 3 g ground dandelion blossoms, homogenized in 10 mL water, spiked at 50ng/g extraction tube Supel QuE Acetate extration tube (55234-U) extraction process add 25 mL of acetonitrile; add contents of Supel QuE acetate extraction tube; shake immedia...

GC Analysis of Organochlorine Pesticides in Water on SPB®-5 after SPME using 100 μm PDMS Fiber

sample/matrix 200 ppt each in 2 mL water extraction 15 min immersed in water with rapid stirring SPME fiber polydimethylsiloxane, 100 µm (57300-U) column SPB-5, 15 m x 0.20 mm I.D., 0.20 µm (24165-U) oven 120 °C (1 min) to 180 °C at 30 °C/min, then to 290 °C at 10 °C/min carrier gas helium, 37 cm/se...

GC Analysis of a 10-Component Pesticide Mix on SLB®-5ms (10 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

column SLB-5ms, 10 m x 0.10 mm I.D., 0.10 µm (28465-U) oven 40 °C (1 min), 80 °C/min to 160 °C, 5 °C/min to 340 °C (2 min) carrier gas helium, 0.52 mL/min sample 10-component pesticide mix, each analyte at 0.8-2.0 µg/mL in hexane:acetone (50:50) injection 0.5 µL10:1 split inj. temp. 280 °C MSD inter...

US EPA Method 608/8081/OLM04.2 PEST: GC Analysis of Organochlorine Pesticides on SPB®-608

column SPB-608, 30 m x 0.25 mm I.D., 0.25 µm (24103-U) oven 100 °C (2 min), 15 °C/min to 300 °C (5 min) carrier gas helium, 0.9 mL/min, constant flow sample chlorinated pesticide standard (cat. No. 46845-U), 50 ppb in methylene chloride injection 2.0 µL, splitless (0.75 min) liner 4 mm I.D. single t...

US EPA Method 8141: GC Analysis of Organophosphorus Pesticides (OP-Pest) on Equity®-5, MS Detection

column Equity-5, 30 m x 0.25 mm I.D., 0.25 µm (28089-U) oven 120 °C (3 min), 5 ºC/min to 270 °C (5 min) carrier gas helium, 30 cm/sec @ 120 ºC sample 40 ng on-column of a custom organophosphorus pesticides mix injection 1 µL liner 4 mm I.D., double taper inj. temp. 250 °C MSD interface 325 °C scan r...

GC Analysis of Multiple Pesticides on SLB®-5ms after SPME using 60 μm Carbowax® Fiber

sample/matrix Pesticides at 10 ppb in 0.1M phosphate buffer, pH 7, with 25% NaCl, 9 mL in 10 mL screw cap vial desorption process 2 min. at 250C, splitless for 0.75 min. then opened extraction 30 min. direct immersion with agitation using CombiPal autosampler SPME fiber 60 µm Carbowax (PEG) (57354-U...

GC Analysis of Agricultural Pesticides (Standard) on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D, 0.25 µm (28471-U) oven 100 °C (1 min), 10 °C/min to 300 °C (5 min) carrier gas helium, 1 mL/min constant sample 29-component pesticide mix plus 1 internal standard, each at 100 ppb in toluene injection 1.0 µLpulsed (20 psi until 0.20 min), splitless (1.0 min) line...

GC Analysis of a 16-Component Pesticide Mix on SLB®-5ms (10 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

column SLB-5ms, 10 m x 0.10 mm I.D., 0.10 µm (28465-U) oven 40 °C (1 min), 80 °C/min to 160 °C, 5 °C/min to 340 °C (2 min) carrier gas helium, 0.52 mL/min sample 16-component pesticide mix, each analyte at 0.8-2.0 µg/mL in hexane:acetone (50:50) injection 0.5 µL10:1 split inj. temp. 280 °C MSD inter...

GC Analysis of Pesticides in Beef Kidney on SLB®-5ms (20 m x 0.18 mm I.D., 0.36 μm) after QuEChERS Cleanup using Supel™ Que Z-Sep+, MS in SIM Mode, Fast GC Analysis

sample preparation Dispersive (QuEChERS) sample/matrix 10 gm homogenized beef kidney spiked at 50 ng/g with pesticides extraction tube Supel Que Acetate (AC) Tube (55234-U) extraction process add 10 mL of acetonitrile; shake for 1 minute; add contents of Supel Que acetate extraction tube (55234-U); ...

GC Analysis of Pesticide Residues in Hops on SLB®-5ms after QuEChERS Extraction then QuEChERS Cleanup using Supel™ QuE Verde

sample preparation Solid Phase Extraction (Dispersive (QuEChERS)) sample preparation place supernatant in amber low adsorption vial for GC/MS/MS analysis. sample/matrix Ground hop pellets, 1 gm, spiked at 50 ng/g. extraction tube Supel QuE Citrate (EN) Tube (55227-U) extraction process Add 10 mL wat...

GC Analysis of Pesticides in Spinach on Equity®-1 after SPE using Supelclean™ ENVI-Carb-II/PSA

sample preparation SPE (Solid Phase Extraction) sample/matrix 10 g of fresh spinach spiked at 0.2 ppm each pesticide SPE tube/cartridge Supelclean ENVI-Carb-II/PSA, 500mg/300mg/6mL (55119-U) condition 5 mL acetonitrile:toluene (3:1, v/v) sample addition 1 mL concentrated sample extract elution 20 mL...

LC/MS MS Analysis of Pesticides in Kidney on Chromolith® Performance 50-2mm

sample preparation A mixture of eight pesticides was prepared utilizing ACN as a solvent. (See Analysis Note for more information. ) column Chromolith® Performance 50 x 2 mm (1.52007.0001) column temp. 25 °C mobile phase [A] ACN + 0.1% FA; [B] water + 0.1% FA; gradient 20% A; to 80% A in 6 min; to 7...

GC Analysis of a 6-Component Organophosphorus Pesticide (OP-Pest) Mix on SPB®-608

column SPB®-608, 30 m x 0.53 mm I.D., 0.50 µm (25312) oven 125 °C (0.5 min), 6 C/min to 230 °C (2 min), 3 °C/min to 245 °C carrier gas helium, 8 mL/min sample each analyte at 1 µg/mL injection direct detector FPD, 280 °C Categories Analytical Chromatography, Food & Beverage Analysis, GC Applications...

HPLC Analysis of Phenyl Urea Pesticides on Ascentis® Express C18 Phase

column Ascentis® Express C18, 10 cm x 4.6 mm I.D., 2.7 µm particles (53827-U) column temp. 30 °C mobile phase [A] 0.025 M potassium phosphate buffer, adj. to pH = 2.5, [B] acetonitrile; (50:50, A:B) flow rate 2.0 mL/min pressure 300 bar sample acetonitrile injection 0.5 µL detector UV 245 nm, VWD Ca...

LC/MS/MS of Pesticides in Oranges on Ascentis® Express C18 after Sample Prep using Supel™ Que Z-Sep/C18 QuEChERS sorbent

sample preparation Dispersive (QuEChERS) sample/matrix 10 g of pureed oranges (homogenized with rind); spike at 50 ppb (add 16.75 µL of a custom made pesticide mix, each analyte at 30 µg/mL) extraction tube Supel™ QuE Citrate (EN) Tube (55227-U) extraction process add 10 mL acetonitrile; shake for 1...

GC/MS/MS Analysis of Pesticides in Ginseng on SLB®-5ms after QuEChERS Cleanup usingSupelClean™ Ultra

sample/matrix powdered ginseng extraction tube Supel Que non-buffered extraction tube (4 mg NaSO4, 1 g NaCl in 12 mL tube) (55294-U) extraction process Add 10 mL ACN/IS Extraction Solvent and allow to sit 15 minutes, then shake or vortex 30 sec. Add contents of Supel Que nonbuffered extraction tube ...

GC Analysis of Pesticides in Spinach on SLB®-5ms after QuEChERS Extraction then SPE Clean-up using Supel™ Sphere Carbon/NH2

sample preparation Solid Phase Extraction (SPE) sample/matrix spinach extract extraction process to 10 g homogenized spinach add 10 mL acetonitrile and shake 1 min, add contents of Supel QuE acetate tube (55234-U), shake 1 min and centrifuge, transfer extract to dSPE tube, (add 1 g anhydrous MgSO4, ...

HPLC Analysis of Organo-acid Pesticides on Discovery® C18

column Discovery C18, 15 cm x 4.6 mm I.D., 5 µm particles (504955) column temp. 20 °C mobile phase [A] 25 mM potassium phosphate, (pH 2.3): [B] acetonitrile; (60:40, A:B) flow rate 2 mL/min injection 1 µL detector UV, 214 nm Categories Analytical Chromatography, Environmental Analysis, Food & Bevera...

LC/MS/MS Analysis of Pesticide Residues in Dates on the Ascentis® Express RP-Amide Column after QuEChERS Extraction

sample preparation Dilute 100 µL of cleaned extract to a final volume of 1 mL in 5 mM ammonium formate/0.1% formic acid in water; transfer diluted sample to vial for LC/MS/MS analysis sample/matrix 5 g ground dates spiked with pesticides at 10 ng/g extraction process add 10 mL water and 10 mL aceton...

HPLC Analysis of Carbamate and Urea Pesticides on SUPELCOSIL™ LC-8 after SPME using 60 μm PDMS/DVB Fiber

sample/matrix 3 mL water containing 8ng/mL of each analyte in 10% NaCl desorption process static, 5 min in acetonitrile:water (65:35); dynamic, valve open during run extraction immersion, 40 min, rapid stirring SPME fiber PDMS/DVB, 60 µm (57317) column SUPELCOSIL LC-8, 15 cm x 4.6 mm I.D., 5 µm part...

GC Analysis of a 11-Component Pesticide Mix on SLB-5ms (10 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

column SLB-5ms, 10 m x 0.10 mm I.D., 0.10 µm (28465-U) oven 40 °C (1 min), 80 °C/min to 160 °C, 5 °C/min to 340 °C (2 min) carrier gas helium, 0.52 mL/min sample 11-component pesticide mix, each analyte at 0.8-2.0 µg/mL in hexane:acetone (50:50) injection 0.5 µL10:1 split inj. temp. 280 °C MSD inter...

US EPA Method 608/8081/OLM04.2 PEST: GC Analysis of Organochlorine Pesticides on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 100 °C (2 min), 15 °C/min to 300 °C (5 min) carrier gas helium, 0.9 mL/min, constant flow sample chlorinated pesticide standard (46845-U), diluted to 50 ppb in n-hexane injection 2.0 µL, splitless (0.75 min) liner 4 mm I.D., single taper in...