In an effort to move towards continuous, higher time resolution sampling and reduce the need for expensive, time consuming, filter based sampling, OAQPS is committed to the evaluation of new, continuous monitoring technologies for implementation at routine monitoring networks. For this reason, the AAMG purchased eight Sunset Semi-Continuous OC/EC instruments for deployment to monitoring agencies. The primary objectives of this Evaluation Project are to evaluate Sunset instrument performance in various locations and conditions, determine how well the Sunset compares with the URG 3000N and the Aethalometer, and determine if integration of the Sunset OC/EC instrument across a larger number of sites is appropriate for long-term monitoring in the CSN.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.
- Review of Sunset Organic and Elemental Carbon (OC and EC) Measurements During EPA's Sunset Carbon Evaluation Project (PDF)(65 pp, 4 MB, 5/2019)
- A Guide to Running and Maintaining the Sunset Laboratory Semi-Continuous OCEC Analyser (PDF)(96 pp, 2 MB)
- Standard Operating Procedure (SOP) for the Analysis of Organic and Elemental Carbon (OC/EC) Using the Sunset laboratory Semi-Continuous Carbon Aerosol Analyzer (PDF)(24 pp, 1 MB, 3/2/2012)
- Sunset Carbon Evaluation Project/Quality Assurance Project Plan (QAPP) (PDF)(316 pp, 10 MB, 9/27/2011)