TY - RPRT TI - Intercomparison program for organic speciation in PM2.5 air particulate matter: description and results for trials I and II AU - Schantz, Michele M AU - Wise, Stephen A AU - Lewtas, Joellen PY - 2005 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7229 DO - 10.6028/NIST.IR.7229 ER -