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Compilation and assessment of recent Positive Matrix Factorization and UNMIX receptor model studies on fine particulate matter source apportionment for the eastern United States.(TECHNICAL PAPER)(Report)

ABSTRACT

In 1997, the U.S. Environmental Protection Agency (EPA) revised its particulate matter standards to include an annual standard for fine particulate matter ([PM.sub.2.5]; 15 [micro]g/[m.sup.3]) and a 24-hr standard (65 [micro]g/[m.sup.3]). The 24-hr standard was lowered to 35 [micro]g/[m.sup.3] in 2006 in an effort to further reduce overall ambient [PM.sub.2.5] concentrations. Identifying and quantifying sources of particulate matter affecting a particular location through source apportionment methods is now an important component of the information available to decision makers when evaluating the new standards. This literature compilation summarizes a subset of ...

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