2,4-DB

HPLC Analysis of Acidic Herbicides in Reverse-Phase Anion-Exchange Modes on Coresep SB Column
Conditions of Experiment
Column: Coresep SB
Separation Modes: reveresed-phase and anion-exchange
Column Dimenstions: 4.6x150 mm, 2.7 μm, 90A
Mobile Phase: "ACN from 40% to 60% in 15 min, 5 min hold, 0.1% sulfuric acid
Detection: 275 nm
Sample: 0.3 mg/ml
Injection: 2 μL
Flow rate: 1 ml/min
Analytes
Class of compounds: Aromatic acid, Aromatic compound, Fungicide, Herbicide, Organic acid, Pesticide
Nature of compounds: Acidic, Basic, Hydrophilic, Hydrophobic, Neutral, Polar
Compounds: Dalapon, 2,4-DB, Dinoseb, MCPA, Mecoprop, Dichlorprop, 2,4-D, Picloram, Dicamba, Silvex, 2,4,5-T, 3,5-DCBA, Pentachlorophenol (PCP)
HPLC Analysis of Herbicide 2,4-DB on Coresep 100 Mixed-Mode Column
Application description

2,4-DB or 4-(2,4-dichlorophenoxy)butyric acid is a selective systemic phenylbutyric herbicide used to control annual and perennial broadleaf weeds. 2,4-DB is acidic and hydrophobic in nature and can be analyzed on Coresep 100 core-shell mixed-mode column in reversed-phase anion-exclusion modes. Retention time is controlled by an amount of ACN, buffer concentration and buffer pH. The method is suitable for analysis of various herbicides with LC/MS compatible conditions.

Conditions of Experiment
Column: Coresep 100
Separation Modes: reversed-phase and anion-exclusion
Column Dimenstions: 3.0 x 100 mm
Mobile Phase: ACN gradient from 15% to 60%, AmFm pH 3 from 30 mM to 80 mM, in 7 min
Detection: UV 275 nm
Sample: 0.3 mg/ml
Injection: 1 uL
Flow rate: 0.7 mL/min
Analytes
Class of compounds: Aromatic acid, Herbicide, Pesticide
Nature of compounds: Acidic, Hydrophilic, Polar
Compounds: 2,4-DB
Baseline HPLC Separation of 22 Acidic, Basic and Neutral Pesticides and Antibiotics on Coresep 100 Mixed-Mode Column
Conditions of Experiment
Column: Coresep 100
Separation Modes: reversed-phase, cation-exchange, anion-exclusion
Column Dimenstions: 3.0 x 100 mm
Mobile Phase: ACN gradient from 15% to 60%, AmFm pH 3 from 30 mM to 80 mM, in 7 min, 3 min hold
Detection: UV 275 nm
Sample: 0.1-0.3 mg/ml
Injection: 1 uL
Flow rate: 0.7 mL/min
Analytes
Class of compounds: Amino acid, Antibiotic, Aromatic acid, Aromatic base, Aromatic compound, Drug, Fungicide, Herbicide, Insecticide, Pesticide, Pyridine
Nature of compounds: Acidic, Basic, Hydrophilic, Hydrophobic, Neutral, Polar, Zwitterionic
Compounds: Clopyralid (herbicide), Sulfadiazine, Sulfamethazine, Cefepime (antibiotic), Metribuzin, Bromacil, 2,4-D, MCPA, Thiacloprid (insecticide), 2,4,5-T, Diphenamid, Captan (fungicide), 2,4-DB, Triadimefon, Azinphos Ethyl, Diazinon, Chlorpyrifos Methyl, Phoxim, Teramisol (antibiotic), Benfluralin (herbicide), Dicofol, Hexachlorobenzene
Baseline HPLC Separation of 19 Acidic, Basic and Neutral Pesticides and Antibiotics on Coresep 100 Mixed-Mode Column
Conditions of Experiment
Column: Coresep 100
Separation Modes: reversed-phase, cation-exchange, anion-exclusion
Column Dimenstions: 3.0 x 100 mm
Mobile Phase: ACN gradient from 15% to 60%, AmFm pH 3 from 30 mM to 80 mM, in 7 min, 3 min hold
Detection: UV 275 nm
Sample: 0.1-0.3 mg/ml
Injection: 1 uL
Flow rate: 0.7 mL/min
Analytes
Class of compounds: Amino acid, Antibiotic, Aromatic acid, Aromatic base, Aromatic compound, Drug, Fungicide, Herbicide, Insecticide, Pesticide
Nature of compounds: Acidic, Basic, Hydrophilic, Hydrophobic, Neutral, Polar, Zwitterionic
Compounds: Clopyralid (herbicide), Sulfadiazine, Aniline (herbicide precursor), Cefepime (antibiotic), Metribuzin, Bromacil, 2,4-D, Diphenamid, 2,4,5-T, Captan (fungicide), 2,4-DB, Folpet, Diazinon, Azinphos Ethyl, Chlorpyrifos Methyl, Phoxim, Benfluralin (herbicide), Dicofol, Hexachlorobenzene
HPLC Analysis of Herbicide 2,4-DB on Heritage MA Mixed-Mode Column
Conditions of Experiment
Column: Heritage MA
Separation Modes: reversed-phase and anion-exclusion
Column Dimenstions: 4.6 x 50 mm
Mobile Phase: 45% ACN with 80 mM AmFm pH 3
Detection: UV 275 nm
Sample: 0.3 mg/ml
Injection: 1 uL
Flow rate: 1 mL/min
Analytes
Class of compounds: Aromatic acid, Herbicide, Pesticide
Nature of compounds: Acidic, Hydrophilic, Polar
Compounds: 2,4-DB