ASTM D – Detailed Hydrocarbon Analysis (DHA) ETBE, TAME; Concentration range: to approximately 30 mass %; Methods met: ASTM D Detailed Hydrocarbon Analysis of Spark Ignition Engine Fuels by GC using ASTM D Coen Duvekot. Varian, Inc. Application Note SI 1 of 3. Restek Searchable Chromatogram Library. delim. Olefins on Rtx-DHA ( ASTM D). This chromatogram may contain analytes that are synonyms of .
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However, the cooperative study data provided sufficient statistical data for MTBE only.
Link to Active This ast, will always route to the current Active version of the standard. Top of This Page. Please contact us to check the availability of these products in your country.
Detailed Hydrocarbon Analysis (DHA)
Click “Accept Cookies” to accept the cookies or click “More Information” to find out more about the cookies used on this website. Other compounds containing oxygen, sulfur, nitrogen, and so forth, may also be wstm, and may co-elute with the hydrocarbons.
However, chromatograms obtained in PONA analyses have an extremely large number of peaks and their analytes may be mislabeled. We also share information about your use of our Website with our group companies, distributors and analytics partners.
Olefins on Rtx-DHA (ASTM D) / Restek Searchable Chromatogram Library /
Process control and product specification compliance for many individual hydrocarbons may be determined through the use of this test method. If determination of these specific compounds is required, it is recommended that test methods for these specific materials be used, such as Test Methods D and D for oxygenates, and D for sulfur compounds, or equivalent. No other units of measurement are included in this standard. Other light liquid hydrocarbon mixtures typically encountered in petroleum refining operations, such as blending stocks naphthas, reformates, alkylates, and so forth may also be analyzed; however, statistical data was obtained only with blended spark-ignition engine fuels.
Historical Version s – view previous versions of standard. Without accurate and reproducible retention indices, this may result in erroneous D67229 ratios. Caution should d67229 be exercised when analyzing olefin-free samples using this test method as some of the paraffins may be reported as olefins since analysis is based purely on retention times of the eluting components.
Samples containing significant amounts of olefinic or naphthenic for example, virgin naphthas d6792, or both, constituents above n -octane may reflect significant errors in PONA type groupings. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. This page may contain references to products that are not available in your country.
Historical Version s – view previous versions of standard Translated Version s: Carrier Gas He, Split 1: More Information Accept Cookies. Shimadzu offers DHA analysis conforming to the following methods: Example of a DHA analysis chromatogram. However, some interfering coelution with the olefins above C 7 is possible, particularly if blending components or their higher boiling cuts such as those derived from fluid catalytic cracking FCC are analyzed, and the total olefin content may not be accurate.
The Asfm incorporates an Advanced Flow Controller that enables highly precise flow control, and makes it easy to analyze and identify detailed hydrocarbons. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Although benzene, toluene, and several oxygenates are determined, when doubtful as to the analytical results of these components, confirmatory analyses can be obtained by using specific test methods.
PONA analyte identification is conducted by matching retention indices with normal hydrocarbon paraffins. If this test method is utilized to estimate bulk hydrocarbon group-type composition PONA the user of such data should be cautioned that some error will astn encountered due to co-elution and a lack of identification of all d6279 present.