【摘要】 对合肥市PM2.5膜样品经过剪碎、超纯水浸泡、超声提取后,用离子色谱法对滤液中的阴离子进行测定,加标回收率和相对标准偏差均符合质量控制的要求。该方法检测到合肥市PM2.5中的主要阴离子为F-、Cl-、NO3-、SO42-,检出限分别为0.009 167、0.012 62、0.030 78、0.038 47mg/L,且相关系数都在0.999以上。该测定方法具有高效、高速、高灵敏度和选择性好等优点。更多还原

【Abstract】 PM2.5 samples membranes were cut up,immersed in ultrapure water and extracted by ultrasonic in Hefei. Anions in filtrate were detected by ion chromatography. Standard addition recoveries and relative standard deviation were satisfied with the requirement of quality control. The results showed that the main anions in PM2.5were F-、Cl-、NO3-、SO42-in Hefei. Their detection limit were 0.009 167,0.012 62,0.030 78,0.038 47mg/L,respectively. The correlation coefficient of these anion were greater than 0.999. This method had high efficiency,high speed,high sensitivity and good selectivity,etc.更多还原