Pesticide testing

Scout triggered MRM [stMRM]

SCIEX OS software offers an exciting, data-rich workflow called scout triggered MRM [stMRM]. Intelligent monitoring of the designated marker analytes increases efficiency and reduces the demand for method maintenance.

Detection of pesticide 1080 in milk and infant formula using the SCIEX QTRAP 6500+ system

Sample preparation and LC setup was adopted from AOAC First Action Official Method 2015.03.

Quantitation of dicamba and acid herbicides in agricultural field samples on SCIEX QTRAP 6500+ system

LC-MS/MS methods can utilize negative mode electrospray ionization (ESI−) with great sensitivity replacing derivatization GC methods.

X500R QTOF system with SWATH Acquisition for pesticide residue screening in fruits and vegetables

SWATH screening and quantitative methods for the 190 most commonly monitored pesticides for the Chinese Ministry of Agriculture risk assessment.

Pesticide residues in produce analyzed by targeted MRMHR “Full- Scan” acquisition and processing

Multiple MRMHR traces can be generated without having multiple specific transitions defined during acquisition.

Confirmation of pesticides in jalapeno peppers using QTRAP MS/MS data and library matching in SCIEX OS-Q

The MS method was set up with a targeted MRM list of 200+ pesticides. IDA (Information Dependent Acquisition) criteria were defined such that Enhanced Product Ion (EPI) acquisition would be triggered when an MRM signal exceeded a threshold of 2000 cps.

Quantitation and identification of the pesticide malathion in fruit samples using MRM3 workflow

The traditional MRM and MRM3 modes were compared with results showing that the higher selectivity of MRM3 eliminates background and matrix interference, resulting in better data quality.

Quantitation of acetamiprid & prochloraz in black pepper using the SCIEX Triple Quad 3500 System

For both the analytes, a LLOQ of 1 ppb was achieved, which was easily below the MRL level as mentioned by FSSAI (MRL – 10 ppb) and European Union (MRL – 100 ppb) regulatory bodies.

LC-MS/MS analysis method for 51 pesticides routinely monitored by the ministry of agriculture found in vegetables and fruits

This method analyses 51 pesticides with a 7.5 minute runtime. Sample preparation adopts the internationally accepted QuEChERS (AOAC 2007.1) method with chives, beans and strawberries.

LC-MS/MS rapid quantitation and screening method for 222 pesticide residues in tea

This single injection method uses the QuEChERS for sample pre-treatment and provides high throughput and broad screening for the quantification of 222 pesticides in tea matrix.

Improving selectivity of triazole derivative metabolites - Using SelexION® Differential Mobility Separation Technology

1,2,4-triazole (TRZ), triazole alanine (TAL), triazole acetic acid (TAA) and triazole lactic acid (TLA) are metabolites that commonly occur as plant or soil metabolites of triazole fungicides. Detection of triazole derivative metabolites at LOQ levels of 0.01 mg/kg with high accuracy was achieved.

High chromatography reproducibility enables large panel MRM assays for pesticides in fruit and vegetables

Precise and stable solvent flow delivering less than 0.1% coefficient of variation (CV) retention time variation allows the use of Scheduled MRM algorithm to monitor a large panel of over 200 compounds.

The benefits of MRM3 for the analysis of contaminants in food and water

Here, improvements in S/N using MRM3 have been shown in tea, a complex food matrix.

Analysis of pesticides in food in compliance with EU regulations using the SCIEX X500R QTOF system

A very high mass accuracy can be obtained on the MS/MS, including the for small ions with m/z < 200 Da.