The method of pretreatment to determine trace amounts of Br ,NO 3 and SO 4 2 in sea water by ion chromatography was proposed, by which the electrolysing argentine electrode was used to minimize the disturbance of Cl -.

• 提出一种采用电解银电极降低海水中大量Cl 的浓度的前处理法 ；以便海水中微量的Br ；NO3 以及SO4 2 可以采用快速、灵敏的离子色谱法检测 .