被動采樣分析大氣中的低濃度揮發性有機物

全文下載【摘要】 在對數百個ORSA被動式采樣器進行實驗的基礎上,提出了一種大氣中低濃度揮發性有機物BTEX(苯、甲苯、乙苯、鄰/對/間二甲苯)標準溶液的配制方法以低濃度BTEX的分析方法,并在數千個樣品中得到了使用驗證.平行實驗檢測結果表明,ORSA被動采樣器中BTEX的回收率大于95%,相對標準偏差在0.445 2%~6.28%之間.

【Abstract】 Based on hundreds of experiments with ORSA passive sampler,a reliable compound method for preparing standard solution and an analysis method for low concentration BTEX in atmosphere were presented,and validated by using thousands of samples.Parallel experiments show that the BTEX recycle ratio of ORSA passive sampler is more than 95%,and the relative standard deviation(RSD) is between 0.445 2% and 6.28%.