SUNNYVALE, CA (Jan 2012) — Thermo Fisher Scientific is pleased to announce a fast, simple, and direct injection method to determine total and potential sulfate and total chloride in ethanol according to the American Society for Testing and Materials (ASTM) specification D 4806. Going beyond the capabilities of previously published methods that measure total chloride and sulfate in ethanol at sub-mg/L detection limits, this new method presented in Application Note 290: Determination of Total and Potential Sulfate and Total Chloride in Ethanol According to ASTM Method D 7319 also measures potential sulfate in ethanol. This method can reliably quantify sulfate and chloride at 60 μg/L and 15 μg/L, respectively, which is well below the ASTM D 4806 specification of 4 mg/L for sulfate and 40 mg/L for chloride.
Ethanol is increasingly being used as a gasoline additive, due to rising crude oil prices and a global effort to reduce greenhouse gas emissions. When ethanol is used as a blending agent in gasoline, it is required to meet sulfate and chloride concentration limits defined by ASTM D 4806.
This application and many others can be found at www.thermoscientific.com/dionex under the Documents tab.
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Chromatography
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