Standard operating procedure for the determination of corn-fed status of chicken meat using the 13C/12C isotope ratio of the protein fraction of the meat

Determination of ²H and ¹⁸O Isotope ratio in bulk materials    

This method can be used to determine the ‘global’ or ‘average’ sulphur-34/sulphur-32 (³⁴S/³²S) ratio of bulk materials.