106 ANALYST, JANUARY 1992, VOL. 117 ERRATUM Analytical Applications of Oxocarbons Part 3.* Specific Spectrophotometric Determination of Oxalic Acid by Dissociation of the Zirconium(iv)-Chloranilate Complex Anne-Marie Dona and Jean-FranGois Verchere Analyst, 1991, 116, 533 The authors of this paper have asked that we publish the following information as a correction to their paper. ‘Most concentrations of solutions of the analyte and interferents were incorrectly calculated, especially those used in Fig. 4. This error does not alter significantly the analytical value of the method and the conclusions. However, the reported sensitivities and the detection limit for oxalate should be corrected as follows. The detection limit is 0.23 ppm instead of 0.035 ppm. Revised values for the sensitivities are S = 87 1 g-1 (oxalic acid), 7.8 I g-1 (tartaric acid) and 1.8 I g-1 (D-gluconic acid) for [H2C] = 5 x 10-5 mol dm-3, q = 0.33, pH = 2, h = 335 nm and 1 = 1 cm. When [HzC] = 5 x 10-4 mol dm-3 and 1 = 1 mm, S = 8.4 1 g-* for oxalic acid’.