HPLC Analysis of Malathion

Malathion is the most widely used organophosphate pesticide used in the U.S.. Used heavily in residential landscaping and in public recreation areas, malathion is often used for fruit fly and mosquito eradication. While not considered toxic to humans, malathion metabolizes to a far more toxic malaoxon. The EURL included malathion as a target pesticide for the EUPT-CF9. Obelisc R was used to retain malathion and separate it from impurities. Obelisc R contains embedded ionic and hydrophobic groups which can assist in fine tuning separations. Method is LC/MS compatible and can be used as a general approach for analyzing malathion and other organophosphate insecticides.

Condition 2

Column Obelisc R, 4.6×150 mm, 5 µm, 100A
Mobile Phase MeCN – 40%
Buffer AmFm pH 3.0- 20 mM
Flow Rate 1.0 ml/min
Detection UV, 250 nm

 

 

Description

Class of Compounds
 Insecticide, Herbicide, Fungicide,  Hydrophobic, Ionizable
Analyzing Compounds Malathion

 

Application Column

Obelisc R

SIELC has developed the Obelisc™ columns, which are mixed-mode and utilize Liquid Separation Cell technology (LiSC™). These cost-effective columns are the first of their kind to be commercially available and can replace multiple HPLC columns, including reversed-phase (RP), AQ-type reversed-phase, polar-embedded group RP columns, normal-phase, cation-exchange, anion-exchange, ion-exclusion, and HILIC (Hydrophilic Interaction Liquid Chromatography) columns. By controlling just three orthogonal method parameters - buffer concentration, buffer pH, and organic modifier concentration - users can adjust the column properties with pinpoint precision to separate complex mixtures.

Select options
Application Analytes:
Malathion

Application Detection:
UV Detection
SIELC Technologies usually develops more than one method for each compound. Therefore, this particular method may not be the best available method from our portfolio for your specific application. Before you decide to implement this method in your research, please send us an email to research@sielc.com so we can ensure you get optimal results for your compound/s of interest.