Improvements in Preparation of Samples Generated by SW-846 Method 0010

摘要

A field evaluation study for SW-846 Method 0010 was conducted at a stationarysource emission site with a high moisture content. The sampling train media had been prepared according to Method 0010 protocol, so the laboratory procedures were examined in detail for sources of error. The low recoveries were attributed to the presence of the methanol in the final extract. (The methanol is removed from the probe rinses during the laboratory sample preparation process). A proposed method will be presented that permits the physical removal of wet XAD-2 from the sampling trap without the use of methanol and an alternate procedure is provided for removal of methanol from the trap rinse before sample extract concentration.