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Carbon and Sulfur In Inorganic

High temperature combustion, typically induction, is used to determine carbon and sulfur content in a variety of materials, both organic and inorganic. The sample is accurately weighed and placed in a ceramic crucible or boat, along with combustion accelerators (tungsten, tin, copper and/or iron chip). The crucible is placed in a high temperature induction furnace which is then flooded with oxygen. The furnace is heated to 1370-1425°c causing the combustion of the carbon and sulfur in the sample to form CO, CO2 and SO2. The gases are separated and analyzed by infrared absorption. A heated catalyst (rare earth copper oxide or platinized silica) is used to convert the CO to CO2 prior to detection. The infrared absorption detector measures the absorption of the infrared wavelengths characteristic to CO2 and SO2. The amount of infrared absorption at these wavelengths is compared to a known value based on certified reference material and the weight of the original sample. 

 

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Latest News

Stevensville, Michigan, July 1, 2020 - Alpha Resources LLC, the largest manufacturer of aftermarket consumables and reference materials, is pleased to announce new certified reference materials have been released in Q2 of 2020.  Please  click to read complete details.

Stevensville, Michigan, April 28, 2020 – Alpha Resources LLC has produced their first Ferrochrome Certified Reference Material, AR 308, for Carbon and Sulfur.
 
“Alpha Resources has not previously offered any Ferrochrome materials as a CRM; being our first, this is a notably high carbon which is not typically presented in other CRMs,” notes Kent Dyer, Chief Chemist at Alpha Resources.
 
Additional information about this new CRM and all Alpha CRMs may be found on the website under Reference Materials.