ASTMD6526-10甲苯纯度分析方法.pdf

Designation: D6526 – 10 Standard Test Method for Analysis of Toluene by Capillary Column Gas Chromatography1 This standard is issued under the fixed designation D6526; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval. 1. Scope* D4790 Terminology of Aromatic Hydrocarbons and Related 1.1 This test method covers the determination of hydrocar- Chemicals bon impurities typically found in, and the purity of, samples D6809 Guide for Quality Control and Quality Assurance containing 98 wt % and greater toluene. This test method is Procedures for Aromatic Hydrocarbons and Related Ma- applicable to impurity concentrations in the range of 0.0005 to terials 1.6 wt %. E29 Practice for Using Significant Digits in Test Data to 1.2 Monocyclic aromatic hydrocarbons containing 6 Determine Conformance with Specifications through 8 carbon atoms, cumene, 1,4–dioxane, and nonaro- E355 Practice for Gas Chromatography Terms and Rela- matic aliphatic hydrocarbons containing up to 12 carbon atoms tionships can be detected by this test method. The nonaromatic com- E691 Practice for Conducting an Interlaboratory Study to pounds are determined as a composite.