Laboratory Analysis Services
The Ohio Lumex Laboratory takes pride in our adaptive and agile approach to solving difficult problems. We have invested a great deal of effort into the development of new products, methods, and services in response to our customers’ needs. Ohio Lumex’s reputation for sorbent trap analysis and quickly providing custom-tailored solutions has led to unique and challenging requests from many industries. Our laboratory researchers embrace these challenges and have a long track record of successfully developing new analytical methodologies applied across various industries. Our services include:
30B and Hg Speciation Traps
Our Laboratory routinely analyzes EPA Method 30B Total Hg & Speciation sorbent traps for Relative Accuracy Test Audits, 30B LEE compliance, mercury control technology optimization/verification, and other 30B applications. These sorbent traps are analyzed via thermal desorption atomic absorption spectrometry using Ohio Lumex M324 sorbent trap analyzers. Ohio Lumex also produces, spikes, and provides expert guidance on the use of these sorbent traps.
In addition to analysis of Method 30B sorbent traps, our laboratory also specializes in the analysis of EPA Performance Specification 12B sorbent traps with extremely fast turnaround times and unparalleled data quality. Our laboratory spikes, customizes, and provides source specific recommendations and troubleshooting support of these sorbent traps.
Gold sorbent traps are primarily used for mercury measurements in natural gas using ASTM D5954. These low-level measurements are not amenable to the use of carbon-based sorbent traps which are biased by the presence of organic interferents.
Certain measurement applications may make it impractical or infeasible to sample using sorbent traps. For these applications, a high-pressure gas cylinder filled with the sample gas may be sent to our laboratory for sample processing and analysis via ASTM D5954.
Our Laboratory follows EPA Method 7473 for analysis of solid materials via thermal desorption atomic absorption spectrometry. The types of solid samples our laboratory frequently analyzes for mercury content includes coal, fly ash, soil, sand, limestone, filter materials, and a variety of other materials.
Our analytical Laboratory follows EPA Method 245.1 for sub-ppb mercury measurements.
Reagent and Sorbent Testing
The Ohio Lumex Laboratory has constructed an entrained flow reactor for the purpose of evaluating Hg adsorbents (activated carbons, etc.). Elemental Hg calibration gas is supplied to the reactor while the subject material is slowly added to the reactor. Real-time measurements of Hg concentration are obtained via an Ohio Lumex IRM-915+ monitor. Adsorbent characteristics of the subject material are evaluated by comparing Hg concentration during baseline with concentration during material injection.
All Other Analysis
Hydrogen Chloride Analysis
Our Laboratory follows EPA OTM-40 for analysis of hydrogen chloride sorbent traps. Sorbent Traps are analyzed via ion chromatography. These sorbent traps are typically used for measurement of HCl content in coal-fired flue gas prior to a Method 26 or Method 26A compliance test. OTM-40 can also be used in lieu of Method 26 for compliance purposes, following the guidelines described in Alternative Test Method 129.
Hydrogen Bromide Analysis
The sorbent traps used for capture and analysis of HCl can also be used for measurement of hydrogen bromide (HBr). These measurements are typically performed for engineering tests around Air Pollution Control Devices (APCDs). This measurement has been useful for testing native and artificial hydrogen bromide concentrations for the purpose of mercury oxidation.
Sulfur Trioxide / Sulfuric Acid Analysis
SO3 Sorbent Traps are typically used in lieu of Method 8/8A/CTM-013 for engineering studies and process analysis, especially in cases where Method 8 is too difficult to perform at the sampling site. Common applications include measurement of H2SO4 emissions from coal-fired power plant stacks, as well as testing of SO2 → SO3 conversion across an SCR module or other catalyst. These traps are analyzed via ion chromatography.
These sorbent traps are analyzed via hydride generation atomic fluorescence spectrometry (HGAFS) or graphite furnace atomic absorption spectrometry (GFAAS). Their common application is the evaluation of limestone combustion or injection and its effects in arsenic mitigation for the purpose of preventing catalyst poisoning.
Our arsenic sorbent traps are also used for the capture and analysis of selenium, using the same analytical methods. Selenium measurements are typically of interest to utilities affected by EPA’s Effluent Limitations Guidelines (ELG), since the traps can be used to evaluate selenium control technologies in the gas phase, prior to selenium capture in the FGD.
NH3 sorbent traps are used to measure ammonia slip after SCRs, as well as ammonia concentrations between SCR layers. These sorbent traps are analyzed via ion chromatography.
Method 26 Analysis
Our laboratory analyzes Method 26 and 26A samples for HCl, HBr, Cl2, and Br2.
The Ohio Lumex Analytical Laboratory follows ASTM Method D8230 to analyze gas samples from Tedlar bags, passivated canisters, and sorbent tubes or traps. The Laboratory has taken a leadership position in the sampling and analysis of siloxanes in biogas and is currently developing several new and improved methods for consideration by ASTM that address the complex and varying gas matrices present in landfills, wastewater treatment plants, dairy farms and other feedstocks.