Trace Gas Update from NY’s NCore Pilot Site NESCAUM MAC Meeting Troy, New Hampshire April 24 – 25, 2007
NY’s Pilot NCore site: Pinnacle State Park NOy Converter: (9+ meters) SO2, CO, O3 Manifold Inlet TECO NOy Inlet NY’s Pilot NCore site: Pinnacle State Park
Zero 4:00 – 4:09 Audit Zero = Ave of minute 4:09 = .24 ppb Span 4:10 – 4:19 Audit Span = Ave of minute 4:19 = 407 ppb Precision 4:19 – 4:29 Audit Precision = Ave of minute 4:29 = 80.7 ppb Zero 4:30 – 4:34 Purge 4:35 – 4:39
Zero 0:00 – 0:09 Audit Zero = Ave of minute 0:09 = .41 ppb Span 0:10 – 0:19 Audit Span = Ave of minute 0:19 = 40.94 ppb Precision 0:19 – 0:29 Audit Precision = Ave of minute 0:29 = 10.54 ppb Zero 0:30 – 0:34 Purge 0:35 – 0:39
Audit and Converter Efficiency check run every 48 hrs (6 L/min) Zero 3:20 – 3:34 Audit Zero = Ave of minute 3:34 = -.73 ppb Span 3:35 – 3:44 Audit Span = Ave of minute 3:44 = 28.31 (40) Precision 3:45 – 3:54 Audit Precision = Ave of minute 3:54 = 6.57 (10) Zero 3:55 – 3:58 Purge 3:59 – 4:04
Gas Phase Titration test runs weekly (Sundays) 6 L/min Zero 6:30 – 7:29 Zero = Ave of minute 7:29 = -.92 ppb NO 7:30 – 7:49 NO = Ave of minute 7:49 = 74.9 ppb NO + O3 7:50 – 8:09 NO + O3 = Ave of minute 8:09 = 35.3 ppb Purge 8:10