TY - JOUR AU - George Rhoderick AU - David Duewer AU - Li Ning AU - Kathryn DeSirant C2 - Environmental Science & Technology DA - 2010-01-06 LA - en PB - Environmental Science & Technology PY - 2010 TI - Hydrocarbon Gas Standards at the pmol/mol Level to Support Ambient Atmospheric Measurements UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=902374 ER -