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Measuring Ambient Sulfur Concentrations

IP.com Disclosure Number: IPCOM000081155D
Original Publication Date: 1974-Apr-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Biyal, Y: AUTHOR [+3]

Abstract

The present technique measures the sulfur level of the atmosphere more accurately and economically than prior methods. In the method, a layer of room temperature curing silicone rubber which is free of solvent-extractable sulfur is exposed to the atmosphere. The preferred rubber composition is RTV* which is commercially available.

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Measuring Ambient Sulfur Concentrations

The present technique measures the sulfur level of the atmosphere more accurately and economically than prior methods. In the method, a layer of room temperature curing silicone rubber which is free of solvent-extractable sulfur is exposed to the atmosphere. The preferred rubber composition is RTV* which is commercially available.

The RTV is exposed for a time period dependent on the concentration of the sulfur atmosphere. For example, a few hours is suitable for a saturated atmosphere at 125 degrees C, whereas a number of weeks may be required for low concentration at room temperature.

After exposure, the RTV layer is immersed in a suitable solvent for extraction of sulfur. Soaking the layer in toluene for about one hour provides adequate extraction of the sulfur. The resulting solution is then analyzed by gas chromatography to determine the amount of sulfur extracted, which is relatable to the ambient sulfur level. The resulting determination is specific to elemental sulfur. * Trademark of the General Electric Company.

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