The interaction of bovine serum albumin with phenylbutazone and ibuprofen was studied by fluorescence spectrometry.The binding and thermodynamic parameters were obtained.The reasonable results were obtained by programmed calculation process based on the calculating equation established.By comparison with the results obtained by the other calculating methods,it is proved that the satisfactory results can be obtained by the proposed method.In addition,the effects of common ions on the binding of the drugs and...