Brown and Caldwell engineers and scientists are technical and thought leaders in the environmental sector. Meet the people who have been advancing innovation for more than 70 years.
Metals with Analytical Detection Limits or Background Levels in Filter Media that Exceed Regulatory Screening Levels in Ambient Air
Author: Guy J. Graening, Paul D. Duda and Nadine C. Adkins
2008 AWMA Conference, Portland
A project manager tasked with determining the concentration of metals in ambient air at an environmental site faces several important challenges: 1) Metals in ambient air are typically present in trace concentrations; 2) Current analytical methods have detection limits for some metals that are considerably above regulatory screening levels; and 3) Filter media can have significant background levels of target metals. This paper compares two analytical methods on their ability to address these challenges: 1) ICP/MS analysis of quartz fiber filters collected with a high volume air sampler; and 2) XRF analysis of TeflonĀ® filters collected with a low volume air sampler.
This library contains published materials for which copyrights may be owned by entities other than Brown and Caldwell, but which are stored for limited uses by BC employees. Technical papers authored by BC employees generally may be printed and shared electronically with clients and prospective clients outside BC. Technical papers cannot be sold, and technical papers shared outside BC must have proper attribution of the original sponsoring organization or conference where the paper was presented. This attribution is embedded in each technical paper file when it is loaded into this library. Published articles from magazines or trade journals which are stored in this library are FOR INTERNAL USE ONLY and SHOULD NOT be distributed to clients or others outside BC, without express permission of the copyright owner. For questions regarding copyrights associated with any document in this library, or questions regarding copyrights in general, contact the Legal Department.