Simultaneous determination of 5 kinds of antioxidants in 3 kinds of medicinal plastic bottles by HPLC
RAO Yanchun XIONG Wei ZHU Bijun
Jiangxi Province Engineering Research Certer of Drug and Medical Device Quality, Jiangxi Institute for Drug Control, Jiangxi Province, Nanchang 330029, China
Abstract:Objective To establish a method for the determination of antioxidant BHT, 1010, 330, 1076 and 168 in medicinal plastic bottles made from polypropylene, polyethylene and polyester by high performance liquid chromatography. Methods Agilent Eclipse XDB-C18 (250 mm×4.6 mm, 5 μm) column was used as the column, methanol-water was used as the mobile phase of the gradient elute, with the detection wavelength of 278 nm and the flow rate of 1.0 mL/min. The colomn temperature maintained at 30℃. Results The antioxidant BHT, 1010, 330, 1076 and 168 in the range of 4.969-49.69 mg/L, 5.080-50.08 mg/L, 4.994-49.94 mg/L, 5.014-50.14 mg/L and 4.994-49.94 mg/L showed good linear relationship with the peak area (r > 0.999). The average contents of antioxidant 1010, 330, 1076 and 168 were respectively 31.58-203.82 μg/g, 97.26 μg/g, 56.15-214.45 μg/g and 44.68-265.09 μg/g in the plastic bottles for medicinal use produced by different manufacturers. Conclusion The method is simple and accurate, and it can be used to simultaneously determine the content of 5 kinds of antioxidants in 3 kinds of medicinal plastic bottles.