... - 600 nm) to be detected. It is the most commonly described method of detection for the analysis of ketoprofen in the literature (14 1 - 14 3, 14 5, 14 8, 18 2, 18 3, 18 6, 18 8, 18 9, 19 1, 19 2). There ... Standard deviation RSD (%) Recovery (%) Bias (%) 0. 81 0.80 0. 01 0. 91 98.72 1. 28 7.07 7.09 0. 01 0 .18 10 0.26 -0.26 12 .12 11 . 91 0 .15 1. 27 98.23 1. 77 The accuracy results shown in Table ... octadecasilyl C 18 (14 1 - 14 3, 14 8, 18 2, 18 3, 18 6, 18 8, 18 9, 19 2) and octylsilane C8 (14 5). To prolong the life of analytical columns, guard columns can be inserted between the sample valve and the...