the total noc were then determined by injecting the urine sample ( nitrate content less than 1 mmol l-1 ) or anion-exchange eluate into refluxing ethyl acetate containing either acetic acid for determining heat and acetic acid labile thermal energy analyser responsive compounds ( tac ) or into hydrogen bromide for the determination of tac and noc .
C0028125
nitrate
C0003075
anion