Part No: AN009-HORIssued year: 2015File size: 0.78mbFile type: pdf
Method 525.2 describes the procedure to determine a full suite of low concentration semi-volatile organic compounds in drinking water using solid phase extraction (SPE) or liquid–solid extraction (LSE) techniques. The City of Fort Worth, Water Department implemented an automated SPE process for the analysis of semi-volatiles by EPA Method 525.2 using the Atlantic® C18 solid phase extraction disk. Ethyl acetate, methanol and water were used to condition the Atlantic C18 disk prior to the extraction step. The extraction solvents used were a 1:1 mixture of methylene chloride and ethyl acetate. Extracts were then analyzed by GC/MS using a splitless injection technique.
Part No: AN737Issued year: 2011File size: 0.27mbFile type: pdf
This method describes the use of EVOLUTE WAX plates and columns to extract a suite of organophosphate pesticide metabolites including dimethylphosphate (DMP), dimethylthiophosphate (DMTP), diethylphosphate (DEP), diethylthiophosphate (DETP), dimethyldithiophosphate (DMDTP) and diethyldithiophosphate (DEDTP) from human urine. The method demonstrates extraction of these small polar metabolites at urine concentrations ranging from 40 ng/mL to 400 ng/mL.
resin, polymer, EVOLUTE,