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Show A165E713.T 4 conditions, gaseous species (N0x, CO, O2 and CO2) were also measured. Table 2 presents the test matrix for the two utility combustion turbines. The test matrix for the six industrial gas turbines without NOx controls is presented in Table 3. Formaldehyde and volatile organic measurements were performed at 100 %, 75 % , 50% , and 25% of MCR. For the Solar Mars T1400 SoLoNOx combustor additional tests were performed, as shown in Table 4. The additional tests were volatile organics and formaldehyde at 75 % and 50 % of MCR, while N20 was measured at all test conditions. TESTING AND ANALYTICAL l\1ETIlODS Table 5 presents the sampling and analytical methods used to conduct the gas turbine air emissions test programs. The methods used are either EPA or CARB reference methods, and have been used on other PISCES programs. Brief descriptions of the test methods for the various species measured are included in the following sections. Metals Emission of metals from the utility combustion turbines were determined using EPA Draft Method 29 (Multi-Metals). This is a modification of EPA Method 5, with all glass components and ultrapure fiberglass fIlters to eliminate metal contamination from the sampling train, and a series of acid and permanganate impingers to collect volatile metals. The samples are digested using Parr Bomb acid digestion techniques, and analyzed by inductively coupled plasma (ICP) , inductively couple plasma with hydride generation (ICP Hydride), graphite furnace atomic absorption spectrophotometry (GFAAS) or cold vapor atomic absorption spectrophotometry (CV AAS), depending on the metal. The front and back halves of the sample train were combined for analysis, so no information is available regarding particulate versus vapor phase metal concentrations. Semi-Volatile Organic Compounds (PAH, PCB, PCDD/PCDF) Emissions of P AH, PCB, PCDD/PCDF from the utility combustion turbines were determined using California Air Resources Board (CARB) Method 429, CARB Method 428 and EPA Method 23, respectively. All semi-volatile organic compounds were determined from a single sampling train, which is a modification of EPA Method 5. The modifications include use of specially cleaned glassware and fIlters, and an ice-water cooled XAD-2 resin sorbent module downstream of the fIlter to collect vapor-phase species of interest. Analysis for nineteen PAH species and ten PCB isomers (General Electric Frame 7 only) was performed using high-resolution gas chromatography with low-resolution mass spectrometry in the selected ion monitoring mode (HRGC/LRMS-SIM). Analysis for tetra- through decaPCDD/ PCDF was performed using high-resolution gas chromatography with high-resolution mass spectrometry in the selected ion monitoring mode (HRGC/HRMS-SIM) . QA procedures |
