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130 matches found for Pesticides

GC Analysis of Diphenylamine and Methoxychlor in Apples on a 14%Cyanopropylphenyl Column after SPE using Supelclean ENVI-Carb

sample preparation SPE (Solid Phase Extraction) sample/matrix homogenize 50 g sample in 100 mL acetonitrile then add 10 g NaCl and homogenize 5 min SPE tube/cartridge ENVI-Carb, 500 mg/6 mL column 14% cyanopropylphenyl polysiloxane, 30 m x 0.25 mm I.D., 0.15 µm (Supelco equivalent, Equity-1701, 2837...

HPLC Analysis of Enilconazol (Imazalil) Enantiomers on Astec® CYCLOBOND® I 2000

column CYCLOBOND I 2000, 25 cm x 4.6 mm I.D., 5 µm particles (20024AST) column temp. 23 °C mobile phase [A] 0.1% triethylamine acetate, pH 4.1; [B] acetonitrile; (90:10, A:B) flow rate 0.7 mL/min sample 5 mg/mL in methanol injection 1 µL detector UV, 230 nm Categories Analytical Chromatography, Chir...

Selecting a GC Column for Specific Methods

Related Links • GC analysis • GC Workflow tools • GC Sample preparation • Selecting a GC Column for Specific Industries/Applications • Selecting a GC Column by a Specific Stationary Phase • Capillary GC Columns for GC x GC • Ionic liquid capillary and SLB® i-series columns • Application/Chromatogram...

HPLC Analysis of Coumafuryl Enantiomers on Astec® CHIROBIOTIC® V

column CHIROBIOTIC V, 25 cm x 4.6 mm I.D., 5 µm particles (11024AST) column temp. 25 °C mobile phase [A] 20 mM ammonium nitrate, pH 5.5; [B] THF; (90:10, A:B) flow rate 1.2 mL/min sample 2 mg/mL in methanol injection 1 µL detector UV, 254 nm Categories Analytical Chromatography, Chiral Applications,...

HPLC Analysis of Fenthion Sulfoxide Enantiomers on Astec(R) CHIROBIOTIC(R) TAG in Reversed Phase Mode

Analysis Note Fenthion sulfoxide is an organothiophosphate insecticide. It comprises two enantiomers by virtue of its sulfur chiral center. Enantioselective influences of chiral pesticides and their metabolites on ecosystems is an area of great importance. The possibility that only one enantiomer ha...

HPLC Analysis of Aflatoxins in Wheat on Ascentis® Express C18 after SPE using Supel™ Tox AflaZea

sample preparation SPE (Solid Phase Extraction) sample/matrix 25 g wheat meal spiked with pesticide standards derivatization via KOBRA electrochemical cell, 50 muA SPE tube/cartridge Supel™Tox AflaZea, 6 mL (55314-U) sample addition 2 mL elution collect eluate in 5 mL silanized culture tubes eluate ...

HPLC Analysis of 2(2-Chlorophenoxy) Propionic Acid Enantiomers on Astec® CHIROBIOTIC® T

column CHIROBIOTIC T, 25 cm x 4.6 mm I.D., 5 µm particles (12024AST) column temp. 25 °C mobile phase 0.1 wt% ammonium formate in methanol flow rate 1 mL/min sample 1 mg/mL in methanol injection 5 µL detector UV, 235 nm Categories Analytical Chromatography, Chiral Applications, Pesticides & Herbicide...

HPLC Analysis of 2(4-Chlorophenoxy) Propionic Acid Enantiomers on Astec® CHIROBIOTIC® T

column CHIROBIOTIC T, 25 cm x 4.6 mm I.D., 5 µm particles (12024AST) column temp. 25 °C mobile phase 0.1 wt% ammonium formate in methanol flow rate 1 mL/min sample 2 mg/mL in methanol injection 5 µL detector UV, 235 nm Categories Analytical Chromatography, Chiral Applications, Environmental, Pestici...

HPLC Analysis of Paraquat and Diquat on SUPELCOSIL™ LC-18 after SPE using ENVI™-8 DSK

sample preparation ENVI-8 DSK, 47 mm (57172) sample preparation SPE (Solid Phase Extraction) sample/matrix drinking water adjusted to pH to 10. SPE tube/cartridge ENVI-8 DSK SPE Disk, 47 mm (57172) condition 10 mL acetonitrile; 2 x 10 mL reagent water; 10 mL conditioning solvent A (5 g cetyl trimeth...

HPLC Analysis of Tetraconazole Enantiomers on Astec(R) Cellulose DMP in Normal Phase Mode

Analysis Note The fungicide tetraconazole is a chiral molecule, comprising two enantiomers. Enantioselective influences of chiral pesticides and their metabolites on ecosystems is an area of great importance. The possibility that only one enantiomer has the wanted properties and/or the other form an...

LC/MS Analysis of Glyphosate in Oatmeal on ApHera™ NH2 after SPE using Supel™ Select HLB

sample/matrix instant oatmeal, ground SPE tube/cartridge Supel-Select HLB SPE, 30 mg/1 ml (54181-U) condition 1 mL methanol, 1 mL 50:50 methanol:water sample addition 0.5 mL extract elution collect the second loaded aliquot of the extract eluate post-treatment filter into low absorption vials column...

GC Analysis of 'Positive List' Chemicals (Mix 2) on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 80 °C (2 min), 5 °C/min to 300 °C (4 min) carrier gas helium, 1 mL/min constant sample each pesticide at 20 ppm in acetone injection 1 µLsplitless (1 min) inj. temp. 250 °C MSD interface 300 °C scan range m/z 40-450 Categories Analytical Ch...

HPLC Analysis of Crufomate (Ruelene) Enantiomers on Astec® CYCLOBOND® I 2000

column CYCLOBOND I 2000, 25 cm x 4.6 mm I.D., 5 µm particles (20024AST) column temp. ambient mobile phase [A] acetonitrile; [B] acetic acid; [C] triethylamine; (100:0.2:0.1, A:B:C) flow rate 1 mL/min sample 1 mg/mL in methanol injection 5 µL detector UV, 254 nm Categories Analytical Chromatography, ...

HPLC Analysis of Coumachlor Enantiomers on Astec® CHIROBIOTIC® V

column CHIROBIOTIC V, 25 cm x 4.6 mm I.D., 5 µm particles (11024AST) column temp. 25 °C mobile phase [A] 20 mM ammonium nitrate, pH 5.5; [B] THF; (75:25, A:B) flow rate 0.75 mL/min sample 2.5 mg/mL in methanol injection 2 µL detector UV, 254 nm Categories Analytical Chromatography, Chiral Applicatio...

GC Analysis of 'Positive List' Chemicals (Mix 5) on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 80 °C (2 min), 5 °C/min to 300 °C (4 min) carrier gas helium, 1 mL/min constant sample each pesticide at 20 ppm in acetone injection 1.0 µLsplitless (1 min) inj. temp. 250 °C MSD interface 300 °C scan range m/z 40-450 Categories Analytical ...

HPLC Analysis of Benalaxyl Enantiomers on Astec(R) Cellulose DMP in Normal Phase Mode

Analysis Note Benalaxyl is a fungicide used to protect a variety of crops, including potatoes and grapes. It is a chiral compound, comprising two enantiomers. Enantioselective influences of chiral pesticides, like Benalaxyl, and their metabolites on ecosystems is an area of great importance. The pos...

HPLC Analysis of Fenthion Sulfoxide Enantiomers on Astec CHIROBIOTIC(R) TAG in Polar Ionic Mode

Analysis Note Fenthion sulfoxide is an organothiophosphate insecticide. It comprises two enantiomers by virtue of its sulfur chiral center. Enantioselective influences of chiral pesticides and their metabolites on ecosystems is an area of great importance. The possibility that only one enantiomer ha...

HPLC Analysis of Peptides from BSA on Proteomix® SCX-NP3, Volatile Buffer

column Proteomix SCX-NP1.7, 3 cm x 2.1 mm I.D., 1.7 µm particles (Z777142) mobile phase (A) 10 mM sodium phosphate, pH 2.5; (B) A + 1 M NaCl; (C) acetonitrile gradient 90% A, 0% B, 10% C held for 1.5 min; to 40% A, 50% B, 10% C in 18.5 min flow rate 0.35 mL/min pressure 5511 psi (380 bar) sample try...

GC Analysis of α-Hexachlorocyclohexane (α-HCH) Enantiomers on Astec® CHIRALDEX® G-BP

column Astec CHIRALDEX G-BP, 10 m x 0.25 mm I.D., 0.12 µm (75031AST) oven 170 °C carrier gas helium, 15 psi sample 2 mg/mL in ethanolpeaks 1 & 2: alpha-HCH (alpha-hexachlorocyclohexane) enantiomers injection 0.2 µL, 80:1 split inj. temp. 250 °C detector FID, 250 °C Categories Analytical Chromatograp...

HPLC Analysis of Devrinol (Napropamide) Enantiomers on Astec® CHIROBIOTIC® V

column CHIROBIOTIC V, 25 cm x 4.6 mm I.D., 5 µm particles (11024AST) column temp. 25 °C mobile phase [A] 0.1% triethylamine, pH 5.0; [B] THF; (80:20, A:B) flow rate 1 mL/min sample 1 mg/mL in methanol injection 1 µL detector UV, 254 nm Categories Analytical Chromatography, Chiral Applications, Envir...

GC Analysis of 'Positive List' Chemicals (Mix 1) on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 80 °C (2 min), 5 °C/min to 300 °C (4 min) carrier gas helium, 1 mL/min constant sample each pesticide at 20 ppm in acetone injection 1.0 µLsplitless (1 min) inj. temp. 250 °C MSD interface 300 °C scan range m/z 40-450 Categories Analytical ...

Classical Silica HPTLC Plates

Our high performance thin-layer chromatography (HPTLC) plates are the perfect choice for quantitative separation using instrumental HPTLC. The optimized, smaller particles enable significant higher speed, more efficiency and better sensitivity than classical TLC plates. The parallel separation of ma...

HPLC Analysis of Triadimenol Enantiomers on Astec® CYCLOBOND® I 2000 HP-RSP

column CYCLOBOND I 2000 HP-RSP, 25 cm x 4.6 mm I.D., 5 µm particles (24024AST) column temp. 25 °C mobile phase [A] 20 mM ammonium acetate, pH 4.0; [B] acetonitrile; (70:30, A:B) flow rate 1 mL/min sample 1 mg/mL in methanol injection 10 µL detector UV, 220 nm Categories Analytical Chromatography, Ch...

Determination of Neonicotinoids in Honey using a Chromolith RP-18 HPLC column and UV Detection

Neonicotinoids are water soluble insecticides. They are used for crop protection and can migrate from treated soil into plant tissue and flower nectar. Neonicotinoids have a negative effect on brain cells of honey bees, and colony collapse can occur. [Clothianidin, Imidacloprid and Thiamethoxam are ...

HPLC Analysis of 16 Triazine and Phenyl Urea Compounds on Ascentis® Express RP-Amide, Modified Gradient

column Ascentis Express RP-Amide, 15 cm x 3 mm I.D., 2.7 µm particles (53919-U) column temp. 35 °C mobile phase [A] water; [B] acetonitrile gradient 10 to 25% B in 30 min; 25 to 60% B in 15 min; held at 60% B for 5 min flow rate 0.4 mL/min sample 20 mg/L each (except terbuthylazin desethyl and terbu...

LC/MS Analysis of Ancymidol Enantiomers on Astec® CYCLOBOND® I 2000 HP-RSP

column CYCLOBOND I 2000 HP-RSP, 25 cm x 4.6 mm I.D., 5 µm particles (24024AST) column temp. 35 °C mobile phase [A] 5 mM ammonium acetate, pH 6.0; [B] acetonitrile; (80:20, A:B) flow rate 1 mL/min sample 1 mg/mL in methanol injection 5 µL detector MS (m/z = 257) Categories Analytical Chromatography, ...

HPLC Analysis of Fipronil Enantiomers on Astec® (R,R) P-CAP™

column Astec (R,R) P-CAP, 25 cm x 4.6 mm I.D., 5 µm particles (31024AST) column temp. 25 °C mobile phase [A] heptane; [B] ethanol; (80:20, A:B) flow rate 1 mL/min sample 1 mg/mL in methanol injection 1 µL detector UV, 235 nm Categories Analytical Chromatography, Chiral Applications, Pesticides & Her...

HPLC Analysis of Ancymidol Enantiomers on Astec® CYCLOBOND® I 2000 HP-RSP

column CYCLOBOND I 2000 HP-RSP, 25 cm x 4.6 mm I.D., 5 µm particles (24024AST) column temp. 35 °C mobile phase [A] 5 mM ammonium acetate, pH 6.0; [B] acetonitrile; (80:20, A:B) flow rate 1 mL/min sample 1 mg/mL in methanol injection 5 µL detector UV, 215 nm Categories Analytical Chromatography, Chir...

GC Analysis of α-Hexachlorocyclohexane (α-HCH) and cis-Chlordane Enantiomers on Astec® CHIRALDEX® G-BP

column Astec CHIRALDEX G-BP, 10 m x 0.25 mm I.D., 0.12 µm (75031AST) oven 170 °C carrier gas helium, 15 psi sample 5 mg/mL in ethanolpeaks 1 & 2: alpha-HCH (alpha-hexachlorocyclohexane) enantiomerspeaks 3 & 4: cis-chlordane enantiomers injection 0.2 µL, 100:1 split inj. temp. 250 °C detector FID, 25...

HPLC Analysis of 16 Triazine and Phenyl Urea Compounds on Ascentis® Express RP-Amide

column Ascentis Express RP-Amide, 15 cm x 3 mm I.D., 2.7 µm particles (53919-U) column temp. 35 °C mobile phase [A] water; [B] acetonitrile gradient 5 to 53% B in 70 min flow rate 0.4 mL/min sample 20 mg/L (except terbuthylazin desethyl and terbuthylazine 60 mg/L) in 60:40, water: acetonitrile injec...