【摘要】 基于在盐酸介质中,一定量的溴化钾存在下,当溴酸根氧化吖啶橙时使其荧光猝灭,提出了荧光猝灭法测定饮用水中溴酸根的方法。在激发波长493 nm,发射波长528 nm条件下,体系的荧光强度降低值△F与溴酸根的质量浓度在10.0～560.0μg·L^-1范围内呈线性关系,方法检出限（3S/N）为3.03μg·L^-1。方法用于纯净水和桶装水中溴酸根的测定,回收率在94.0%～107%之间。更多还原

【Abstract】 Based on the fluorescence quenching effect produced by oxidation of acridine orange with BrO₃ in the presence of KBr in a HCl medium,a method for the determination of trace amount of BrO₃^- in drinking water was proposed.Linear relationship between magnitude of decrease in fluorescence intensity（ΔF） and mass concentration of BrO₃^- was kept in the range of 10.0—560.0μg ? L^-1,when measured at(λ_cx) 493 nm and(λ_cm) 528 nm.Value of detection limit（3S/N） found was 3.03μg ? L^-1.The proposed method was applied to the determination of bromate in purified water and barreled water,giving values of recovery by standard addition method in the range of 94.0%—107%.更多还原