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A new flow-injection procedure was developed for the determination of thiopronine (MPG) based on the enhancement of the chemiluminescence(CL) reaction of the MPG-cerium(Ⅳ)-hydrocortisone system. The method is simple, selective and sensitive with a detection limit of 5.9×10-7 mol·L-1(S/N=3). It is applicable to the determination of MPG in the concentration range of 3×10-6～2×10-5 mol·L-1. The relative standard deviation (RSD) is 3.2% for 1×10-4 mol·L-1 MPG(n=11). The method was successfully applied to the determination of MPG in tablets.
A new flow-injection procedure was developed for the determination of thiopronine (MPG) based on the enhancement of the chemiluminescence (CL) reaction of the MPG-cerium (IV) -hydrocortisone system. The method is simple, selective and sensitive with a detection limit of 5.9 × 10-7 mol·L-1 (S / N = 3). It is applicable to the determination of MPG in the concentration range of 3 × 10-6 to 2 × 10-5 mol·L-1. The relative standard deviation (RSD) was 3.2% for 1 × 10-4 mol·L-1 MPG (n = 11). The method was successfully applied to the determination of MPG in tablets.