The retention time (tr) and peak width (w) for compounds a and b are given after chromatographic separation using five different experimental parameters. which chromatographic separations achieved a resolution that is desirable for quantitative analysis?
separation 1: compound a: t; = 13.0 min; w = 5.0 min compound b: t; = 17.0 min; w = 6.5 min
separation 3: compound a: tr = 14.0 min; w = 4.0 min
separation 2: compound a: t; = 10.0 min; w = 3.0 min compound b: t; = 19.0 min; w = 3.0 min
separation 4: compound a: tr = 11.0 min; w = 2.0 min compound b: tr = 16.0 min; w = 5.0 min compound b: tr = 15.0 min; w = 3.0 min
separation 5: compound a: tr = 9.0 min; w = 2.5 min compound b: t; = 13.0 min; w= 4.5 min