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提出了Ru(phen) 3 2 + -SO3 2 --Ce(IV)体系化学发光法测定溶液中亚硫酸盐的方法 SO3 2 -浓度与化学发光强度在 1 0× 10 -7～ 1 0× 10 -4mol/L范围内成正比 ,检出限为 1 97× 10 -7mol/L(S/N =3) ,1 0× 10 -4mol/LSO3 2 -溶液重复 6次测定结果的相对标准偏差为 4 9% 该方法用于测定白葡萄酒中亚硫酸盐总含量为 4 0 0 6× 10 -5mol/L ,加标回收结果令人满意
A method for the determination of sulfite in solution by the chemiluminescence method of Ru (phen) 3 2 + -SO 3 2 - Ce (IV) system was proposed. The concentration of SO 3 2- and the chemiluminescence intensity were in the range of 10 × 10 -7 ~ 10 × 10 The detection limit was 1 97 × 10 -7 mol / L (S / N = 3). The relative standard deviation of the determination results of 10 × 10 -4 mol / L SO 3 2 - solution repeated 6 times was 4 9% This method is used to determine the total content of sulfite in white wine is 4 0 0 6 × 10 -5 mol / L, the result of spike recovery is satisfactory