Anion in inhalable particulate matter can be completely dissolved in water by using ultrasonator and then measured by ion chromatography.Good accuracy and precision can be obtained.

• 介绍了用超声波振荡法能使可吸入颗粒物中的阴离子完全溶解在水中；然后用离子色谱法测定；可获得良好的准确度和精密度.