Spe Disk Articles & Analysis
2 articles found
A 1-liter sample is acidified to a pH of less than 2 and extracted with a solid phase extraction (SPE) disk using 100 ml of n-hexane. It takes about 10 minutes to prep each SPE disk with methanol and another 5 minutes to filter the sample through the filter. ...
Each sample was extracted using a polystyrenedivinylbenzene Resprep® Resin SPE Disk (cat.# 26023) following EPA Method 527 protocol. Extracts were dried with anhydrous sodium sulfate and diluted to a final volume of 25 mL with methylene chloride:ethyl acetate (1:1). ...