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ANSI/ASTM D5580-2002 气相色谱测定汽油成品中苯、甲苯、乙苯、顺式、反式C9和重芳香族及全部芳香族的试验方法

ANSI/ASTM D5580-2002 气相色谱测定汽油成品中苯、甲苯、乙苯、顺式、反式C9和重芳香族及全部芳香族的试验方法

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【英文标准名称】: Test Method for Determination of Benzene, Toluene, Ethylbenzene, p/m-Xylene, o-Xylene, C9 and Heavier Aromatics, and Total Aromatics in Finished Gasoline by Gas Chromatography
【原文标准名称】: 气相色谱测定汽油成品中苯、甲苯、乙苯、顺式、反式C9和重芳香族及全部芳香族的试验方法
【标准号】: ANSI/ASTM D5580-2002
【标准状态】: 作废
【国别】: 美国
【发布日期】: 2002
【实施或试行日期】:
【发布单位】: 美国国家标准学会(US-ANSI)
【起草单位】: ANSI
【标准类型】: ()
【标准水平】: ()
【中文主题词】: 芳烃;苯;乙苯;气相色谱法;汽油;石油产品;试验;甲苯;二甲苯
【英文主题词】: Aromatic hydrocarbons;Benzene;Ethylbenzene;Gas chromatography;Gasoline;Petroleum products;Tests;Toluene;Xylene
【摘要】: This test method covers the determination of benzene, toluene, ethylbenzene, the xylenes, C and heavier aromatics, and total aromatics in finished motor gasoline by gas chromatography. The aromatic hydrocarbons are separated without interferences from other hydrocarbons in finished gasoline. Nonaromatic hydrocarbons having a boiling point greater than n-dodecane may cause interferences with the determination of the C and heavier aromatics. For the C aromatics, p-xylene and m-xylene co-elute while ethylbenzene and o-xylene are separated. The C and heavier aromatics are determined as a single group. This test method covers the following concentration ranges, in liquid volume %, for the preceding aromatics: benzene, 0.1 to 5 %; toluene, 1 to 15 %; individual C aromatics, 0.5 to 10 %; total C and heavier aromatics, 5 to 30 %, and total aromatics, 10 to 80 %. Results are reported to the nearest 0.01 % by either mass or by liquid volume. Many of the common alcohols and ethers that are added to gasoline to reduce carbon monoxide emissions and increase octane, do not interfere with the analysis. Ethers such as methyl tert-butylether (MTBE), ethyl tert-butylether (ETBE), tert-amylmethylether (TAME), and diisopropylether (DIPE) have been found to elute from the precolumn with the nonaromatic hydrocarbons to vent. Other oxygenates, including methanol and ethanol elute before benzene and the aromatic hydrocarbons. 1-Methylcyclopentene has also been found to elute from the precolumn to vent and does not interfere with benzene. The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. 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.
【中国标准分类号】: E31
【国际标准分类号】: 75_160_20
【页数】:
【正文语种】: 英语

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