This paper introduces the development in how to determinations of nitrate and nitrite by comparison with the current methods, it points out the limitation of those methods and presents a new way to monitor NOx and SO2 in the air with HPLC.

• 本文介绍了近几年硝酸根、硝酸根、硫酸根等离子的测定方法的进展，并通过对现有方法的比较，指出了目前这些方法的局限性，提出了利用高效液相色谱仪监测大气中氮氧化物和二氧化硫的新思路。