Merck, CRM05207-50MG, Disulfoton-sulfoxide

General description
This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ.
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com
Disulfoton-sulfoxide is an oxidative metabolite of the organophosphorus insecticide disulfoton.
The European Union regulations define a maximum residue limit (MRL) of 0.01 mg/kg for disulfoton, taken as a sum of disulfoton, disulfoton sulfoxide, and disulfoton sulfone, in foods of plant origin. Currently, disulfoton is not allowed for use in the European Union and also has restrictions put over its use in the USA by American Environmental Protection Agency (EPA).
Application
The certified reference material (CRM) is intended to be used as a calibrant for chromatography and other analytical techniques.
It may also find its use in the following:

Determination of disulfoton and its five metabolites in human blood and urine samples by QuEChERS extraction followed by liquid chromatography-tandem mass spectrometric analysis
Method development for the analysis of 15 organophosphorus pesticides and their metabolites in water samples using multiwalled carbon nanotubes based dispersive solid phase extraction and gas chromatography-nitrogen phosphorus detector (GC-NPD)
Simultaneous determination of 15 organophosphorus pesticides and their metabolites in cereal-based baby food samples using multi-walled carbon nanotubes based dispersive solid phase extraction and gas chromatography-nitrogen phosphorus detector (GC-NPD)
Analysis of 11 pesticides and four of their metabolites in chickpeas and barley flours using a modified QuEChERS extraction and GC-NPD determination
Development of an HPLC method for the simultaneous analysis of nine organophosphorus pesticides in water and post-column chemiluminescence detection with cerium(IV)
Method development to quantify 49 organophosphorus pesticide residues and 10 of their metabolites in fish, egg, and milk samples by means of dual gas chromatography-dual pulse flame photometric detection

Legal Information
TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany