Several pesticides and metabolites (more than 130 analytes) were monitored in the current study by applying liquid and gas chromatography–tandem mass spectrometry (LC-MS/MS, GC-MS/MS). Analytical standards and materials used are described in previous works of our group [11 (link),15 (link),16 (link),17 (link)]. Carbendazim-d3, imidacloprid-d4, dimethoate-d6, and chlorpyrifos-d10 were used as mass-labeled internal standards for the quantification of the compounds measured by LC-MS/MS, and they were purchased from Sigma-Aldrich (Seelze, Germany). Triphenyl phosphate (TPP), deltamethrin-d6, and dichlorvos-d6 were used in the GC-MS/MS analysis and acquired from Sigma-Aldrich (Seelze, Germany), respectively.
Dimethoate d6
Manufactured by Merck Group
Sourced in Germany
Dimethoate-d6 is a deuterated organophosphate compound used as an internal standard in analytical chemistry. It is commonly utilized in the quantification of dimethoate, an insecticide, in various environmental and biological samples.
Automatically generated - may contain errors
Lab products found in correlation
Carbendazim d3, by Merck Group (2 mentions)
Chlorpyrifos d10, by Merck Group (2 mentions)
Imidacloprid d4, by Merck Group (2 mentions)
Sulfuric acid, by Thermo Fisher Scientific (1 mentions)
Ammonium formate, by Thermo Fisher Scientific (1 mentions)
Acetonitrile, by Thermo Fisher Scientific (1 mentions)
Formic acid, by Thermo Fisher Scientific (1 mentions)
Methanol, by Thermo Fisher Scientific (1 mentions)
Dichloromethane dcm, by Merck Group (1 mentions)
Methanol, by Merck Group (1 mentions)
Acetonitrile, by Merck Group (1 mentions)
2 protocols using dimethoate d6
1
Pesticides and Metabolites Monitoring
2
Quantitative Analysis of Pesticide Residues
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Certified chemical standards were obtained from Dr. Ehrenstorfer (Augsburg, Germany) and Sigma Aldrich (Seelze, Germany). Mass-labelled internal standards (imidacloprid-d4, chlorpyrifos d-10, carbendazim-d3, and dimethoate d-6) used for the quantification of the target analytes in the LC-ESI-MS/MS method were obtained from Sigma Aldrich (Seelze, Germany).
Standard solutions were prepared in acetonitrile and methanol in volumetric flasks and kept at -18°C away from the light. acetonitrile, methanol, ammonium formate, and formic acid of LC-MS grade were obtained from Fisher Scientific (Hampton, NH, USA). Dichloromethane (DCM) was of pesticide residues grade and was obtained from Sigma Aldrich (Seelze, Germany). Sodium sulfate anhydrous (Na 2 SO 4 ), and sulfuric acid (purity >95%) were obtained from Fisher Scientific. Hybrid SPE-phospholipid cartridges (30 mg, 1 mL) were purchased from Supelco (Bellefonte, PA, USA). All reagents and chemicals were of analytical grade.
Standard solutions were prepared in acetonitrile and methanol in volumetric flasks and kept at -18°C away from the light. acetonitrile, methanol, ammonium formate, and formic acid of LC-MS grade were obtained from Fisher Scientific (Hampton, NH, USA). Dichloromethane (DCM) was of pesticide residues grade and was obtained from Sigma Aldrich (Seelze, Germany). Sodium sulfate anhydrous (Na 2 SO 4 ), and sulfuric acid (purity >95%) were obtained from Fisher Scientific. Hybrid SPE-phospholipid cartridges (30 mg, 1 mL) were purchased from Supelco (Bellefonte, PA, USA). All reagents and chemicals were of analytical grade.
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