... 0003-2700/84/0358-2461$01.50/0 0 1984 American Chemical Society ... 2462 ANALYTICAL CHEMISTRY, VOL. ... ABD-homocysteine CH3CN was added an equal volume of homocysteine (0.14 g, 1 mmol) in 0.1 M borate (pH 9.5, Na+) containing 1 mM EDTA92Na After 30 min of ...