AWWA ACE68968

This powerpoint presentation begins by providing a brief overview of UCMR2 Methodology, and MWH Certification History. Method Challenges - 521(the biggest challenge) are presented and include the following: long method development time -tried to use Methanol as CI agent butcould not get consistent results;acetonitrile was finally used with O-ringstability problems;issues with parent/daughter ratios; 525.2 - was already in full production forall analytes;527 - had to use 2 disks during extractionprocess due to breakthrough;529 - modified GC temperature programfor better peak shapes; and,535 - bought new instrument due to needfor gradient HPLC system. Preparation for UCMR2 is outlined, along with U.S. Environmental Protection Agency (USEPA) evaluations. The presentation addresses UCMR2 issues that include the following:CDX Inventory;Verifying Preservation;Reporting;Data Quality; and,Electronic Data Upload Glitches. Presentation conclusions indicate that:UCMR2 is a complex project, with manyopportunities for "issues" but therehaven't been as many as one wouldhave expected; methods are more rugged thanoriginally seen during development -practice makes perfect; and,the program is not "glitch free". Includes figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2008

Number of Pages:

25

File Size:

1 file , 910 KB