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130 matches found for Pesticides

US EPA Method 8141: GC Analysis of Organophosphorus Pesticides (OP-Pest) on SPB®-608

column SPB-608, 30 m x 0.25 mm I.D., 0.25 µm (24103-U) oven 60 °C (1 min), 5 °C/min to 200 °C, 15 °C/min to 300 °C (5 min) carrier gas helium, 1.5 mL/min sample nitrogen-phosphorous pesticide standard, each analyte at 100 ppb in MTBE injection 2.0 µL, splitless (0.75 min) liner 4 mm I.D., single tap...

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...

US EPA Method 8081: GC Analysis of Organochlorine Pesticides on Equity®-5

column Equity®-5, 30 m x 0.25 mm I.D., 0.25 µm (28089-U) oven 100 °C (2 min), 15 °C/min to 160 °C, 5 °C/min to 300 °C (10 min) carrier gas helium, 30 cm/sec @ 100 °C sample 50 ppb of a 22-component chlorinated pesticides standard (46845-U) injection 2 µL, splitless (0.5 min) liner 4 mm I.D., double ...

EN Method 2005/108/EC: GC Analysis of Pesticide/PAH Compounds on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 50 °C (3 min), 25 C/min to 250 °C (3 min), 4 °C/min to 325 C (5 min) carrier gas helium, 0.9 mL/min constant sample 26 analytes at 50 ppb each in methylene chloride injection 0.5 µL, pulsed (15 psi until 0.20 min) splitless (1.0 min) liner ...

GC Analysis of Pesticides in Spinach on SLB®-5ms after QuEChERS Extraction then SPE Clean-up using Supelclean™ ENVI-Carb/NH2 Dual Layer

sample preparation Solid Phase Extraction (SPE) sample/matrix Spinach extract by QuEChERS, as described in the pretreatment step extraction process to 10 g homogenized spinach, add 10 mL acetonitrile, shake 1 min, add contents of Supel QuE acetate tube (55234-U), shake 1 min, centrifuge, transfer ex...

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 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...

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...

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 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 Nonvolatile Pesticides in Water on SUPELCOSIL™ LC-18-DB after SPE using Supelclean™ ENVI-Carb™

sample preparation SPE (Solid Phase Extraction) sample/matrix water spiked with pesticides at 10-50 µg/L SPE tube/cartridge Supelclean ENVI-Carb, 250 mg/3 mL (57088) condition 5 mL methylene chloride:methanol (80:20); 1 mL methanol; 10 mL 2% acetic acid in water (keep bed moist until sample addition...

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...

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 Organophosphorus Pesticides on Discovery® RP-Amide C16

column Discovery RP-AmideC16, 15 cm x 4.6 mm I.D., 5 µm particles (505013) column temp. 20 °C mobile phase [A] acetonitrile: [B] water; (60:40, A:B) flow rate 1 mL/min injection 1 µL detector UV, 214 nm Categories Analytical Chromatography, Environmental Analysis, Pesticides & Herbicides, Organics, ...

US EPA Method 608/8081/OLM04.2 PEST: GC Analysis of Organochlorine Pesticides on Equity®-1701 (15 m x 0.10 mm I.D., 0.10 μm), Fast GC Analysis

column Equity-1701, 15 m x 0.10 mm I.D., 0.10 µm (28343-U) oven 100 °C, 25 °C/min to 280 °C carrier gas hydrogen, 40 cm/sec constant sample 50 ppb of a 22 component chlorinated pesticide standard in n-hexane injection 2 µL, splitless (0.75 min) liner 4 mm I.D., single taper inj. temp. 225 °C detecto...

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...

OSHA Method 62: GC Analysis of Organophosphorus Pesticides (OP-Pest) on SPB®-20 after Collection/Desorption using ORBO™-49P

adsorbent tube ORBO-49P (20350) column SPB-20, 60 m x 0.53 mm I.D., 1.0 µm film (available on request) oven 200 °C (2 min) to 250 °C at 4 °C/min carrier gas helium, 8 mL/min sample calibration standard: 12 µg/mL each pesticide, 78 µg/mL tributyl phosphate (int. std.) in hexane (blank: 270 mg Supelpa...

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;...

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

sample preparation Dispersive (QuEChERS) sample/matrix Avocado spiked with pesticides at 20 ng/g extraction tube Supel QuE Acetate extraction tube (55234-U) extraction process add 25 mL of acetonitrile; shake for 1 minute; add contents of Supel QuE acetate extraction tube; shake immediately for 1 mi...

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 ...

GC Analysis of Organophosphorus Pesticides (OP-Pest) on SLB®-5ms after SPME using 60 μm Carbowax® Fiber

sample/matrix Organophosphate pesticides at 10ppb in 0.2M phasphate buffer, pH 7, with 25% NaCl, 9mL in 10 mL 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-...

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...

HPLC Analysis of Carbamate and Urea Pesticides on SUPELCOSIL™ LC-8

column SUPELCOSIL LC-8, 15 cm x 4.6 mm I.D., 5 µm particles (58220-U) column temp. 35 °C mobile phase [A] acetonitrile; [B] water gradient 18:82 to 65:35 in 9 min, hold 3 min flow rate 2 mL/min injection 10 µL detector UV, 240 nm Categories Analytical Chromatography, Environmental Analysis, Pesticid...

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...

HPLC Analysis of Pesticides on Ascentis® C8 (15 cm x 4.6 mm x 5 μm)

column Ascentis C8, 15 cm x 4.6 mm I.D., 5 µm particles (581424-U) column temp. 35 °C mobile phase [A] water; [B] acetonitrile gradient 35 to 75% B in 13 min; held for 5 min flow rate 1.0 mL/min sample as indicated in 2.2% 90:10 acetonitrile:acetone in DI water injection 100 µL detector UV, 254 nm C...

US EPA Method 8141: GC Analysis of Organophosphorus Pesticides (OP-Pest) on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) carrier gas helium, 1.5 mL/min sample nitrogen-phosphorous pesticide standard, each analyte at 100 ppb in MTBE injection 2.0 µL, splitless (0.75 min) liner 4 mm I.D., single taper inj. temp. 250 °C detector NPD, 320 °C Categories Analytical Chro...

GC Analysis of a 12-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 12-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, 340 °C Final Temp.

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 340 °C (5 min) carrier gas helium, 0.9 mL/min sample 200 ppm organochlorine pesticide standard mix (CRM46845) containing 22 analytes, diluted to 50 ppb with hexane injection 1µL, splitless (0.75 min) liner 4 mm ...

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...

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...