RA-915+/RP-M324 Sorbent Trap Mercury Analyzer
Sorbent Trap Mercury Analyzer
Description
Using a sample probe that will be inserted into the emission stack and a sampling console that can accurately measure the volume of gas sampled, the emission gases will be pulled onto a pair of Sorbent Traps. Here, the mercury will be trapped in order to be measured on the Sorbent Trap Mercury Analyzer.
Features
- Ability to quantify 1 ng to 100,000 ng per analysis
- easy calibration
- can analyze an entire trap section including glass wool in one run
- most RATA analyses take about 90 seconds; high level analyses - up to 8-10 minutes
- exhaust is scrubbed, no clean room or hood is needed
- perfect for field use
- works great in the lab
- real-time peak viewing allows run-time adjustment for abberant samples
- contains no catalyst, gold amalgam, or drying tube that require frequent expensive replacement
- requires no compressed gases (other analyzers require compressed oxygen)
- no autosampler, but samples can be analyzed in the time required to load an autosampler, and there is no potential for contamination of samples traveling together in the sample tray
- industry standard for Method 30B and Appendix K with about 100 units in use
- unique application of Zeeman AA Technology prevents interference and allows a simpler furnace design
- operation is easy to learn, training and certification take one day
Advantages for EPA Method 7473 Thermal Analysis
- Analyze samples from 0.2ng/g (0.2ppb) to 30,000,000ng/g (30,000ppm)
- most analyses take 90 seconds. Very high level samples take only 8-11 minutes
- sample Sizes up to 5g
- versatile: analyze aqueous samples thermally down to 5ug/L with no digestion
- analyzer module is the finest Hg vapor monitor available, able to detect < 2 ng/m3
- no catalyst, gold amalgam, or drying tube, hence the analyzer is not prone to damage from high-level or halogen contaminated samples
Advantages of Sorbent Trap System over Continuous Emissions Mercury Monitor (CEMM) as the primary system for compliance monitoring
- Capital and operating costs a fraction of CEMMs costs
- mature proven technology, reliability proven by many systems in use
- simple, dependable, easy and inexpensive to maintain
- the only system capable of reliably measuring low levels (<0.5 micrograms per cubic meter.) This will be critical where Mercury Reduction is mandated
Advantages of Sorbent Trap System as an additional tool for facilities equipped with CEMM
- Can be used as a low cost back-up system during CEMMs maintenance and repair where a loss of data can mean tens of thousands of dollars
- check the accuracy of your calibrators
- perform your own RATA and pre-Rata tests
- excellent CEMMs trouble-shooting tool
- perform Speciation Studies using our Ohio Lumex Speciation Traps
- flexible for testing at different points and assessing Mercury Reduction Schemes
- can be used to determine mercury levels in coal, ash, and other materials
- perfect to reveal best optimization of Sorbent Injection Systems
Advantages of the Sorbent Trap System for Stack Testers
- Much simpler to perform than Method-29 or “Ontario Hydro” method
- results in minutes
- quickly categorize source levels on site
- only collect the number of samples needed (9 versus 12 runs) - no need to collect extra runs to assure 9 good results
- finish RATA using method compliant results before leaving the site
- saves money compared to other methods or off-site analysis
- “One-Shot” argument: both Digestion and Thermal Methods are destructive if sample is lost on Trap Disassembly. The penalty for on-site Thermal Analysis is merely another run
Comparison with other methods
Ohio Lumex analyzer on site:
- typical RATA in 1.5 - 2 days
- minumal runs required (as few as 9) since data integrity can be determined on site
- testing team has to complete control over analysis
- 3 - 5 days required to get 12 runs
- results analyzed off-site
- testing must be repeated if 4 or more runs fail
- equipment is expensive and fragile
- must do extra runs to ensure 9 good runs (12 vs. 9)
- retesting required if 4 or more runs prove to be bad
- impossibe to predict spike value for Field Recovery Test
- expensive
- dynamic spiking is complicated to perform
- no portable NIST Traceable Calibrator for "total" Hg is commercially available
- wet stacks and high particulates can cause problems
Testing sites where RATA criteria was met using Appendix K Ohio Lumex analyzer
- Allegheny Armstrong Power Plant July 2006, WKU Tester
- Trimble County RATA July 7- 12, 2005, Arcadis Tester
- Reliant Energy Power March 24, 2006, EERC Tester
- EPRI Round Robin Test, multiple locations, 2006
- NIPSCO power plant Indiana, APEX ETV EPA verification 2006, Battelle Tester