Improved residue analysis

Quaternary ammonium compounds (QACs) are widely used as surfactants and biocides in disinfectant preparations and in personal care products. There is a possibility that food in contact with cleaned and disinfected surfaces might pick up residues of these compounds. Two QACs - namely benzalkonium (BAC) and didecyldimethylammonium chloride (DDAC) - now have associated maximum residue limits (MRLs - levels per kg of food that should not be exceeded) and this has prompted the need for improved analytical methods.

A method that can detect residues of these at parts per billion levels has been developed using sophisticated mass spectrometry and is available as an analytical service.

Contact: Nick Byrd
+44(0)1386 842187
nick.byrd@campdenbri.co.uk