1.1 这些试验方法包括玻璃砂的化学分析。它们适用于高硅砂（99 % + 二氧化硅（SiO 2. ))或含12至13的高铝砂 % 氧化铝（Al 2. O 3. ). 这些测试方法通常是非经典的，快速准确。它们包括测定二氧化硅和总R 2. O 3. （参见 11.2.4 )，并将总铁作为氧化铁（Fe）单独测定 2. O 3. )，二氧化钛（TiO 2. )，氧化铬（Cr 2. O 3. )，氧化锆（ZrO 2. )，以及点火损失。包括碱土和碱的程序。高铝砂可能含有多达5至6 % 总碱金属和碱土金属。建议用火焰光度法测定碱，用吸收分光光度法测定碱土。 1.2 如果详细遵循这些试验方法，将提供实验室间结果一致性。 注1: 有关更多信息，请参阅测试方法 C169 和实践 E50 . 1.3 这些测试方法按以下顺序出现: 裁判分析程序: 部分 二氧化硅（SiO 2. )-双重脱水 10 R总计 2. O 3. -重量分析法 11 Fe公司 2. O 3. ，TiO 2. ，氧化锆 2. ，Cr 2. O 3. ，通过光度法和 铝 2. O 3. 络合滴定法 12 – 17 铁测定样品的制备 氧化物、二氧化钛、氧化铝和氧化锆 12 氧化铁（如Fe 2. O 3. )采用1,10-菲咯啉法 13 二氧化钛（TiO 2. )采用提龙法 14 氧化铝（Al 2. O 3. )通过CDTA滴定法 15 氧化锆（ZrO 2. )采用邻苯二酚紫法 16 氧化铬（Cr 2. O 3. )通过1,5-二苯基碳- 肼法 17 常规分析程序: 二氧化硅（SiO 2. )-单次脱水 19 铝 2. O 3. 、CaO和MgO原子吸收规范- 营养测定法 20 – 25 不适用 2. O和K 2. O-火焰发射分光光度法 26 - 27 点火损失（LOI） 28 1.4 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 3.1 这些测试方法可用于确保玻璃砂的化学成分符合该原材料所需的成分规范。 3.2 这些试验方法不排除使用在允许偏差内产生结果的其他方法。在任何情况下，分析员都应通过国家标准与技术研究所（NIST）标准参考材料或具有与受试材料成分相当成分的已知成分的其他类似材料来验证所使用的程序和技术。NIST提供了标准参考材料清单 特别出版物260 ，当前版本。

1.1 These test methods cover the chemical analysis of glass sands. They are useful for either high-silica sands (99 % + silica (SiO 2 )) or for high-alumina sands containing as much as 12 to 13 % alumina (Al 2 O 3 ). Generally nonclassical, these test methods are rapid and accurate. They include the determination of silica and of total R 2 O 3 (see 11.2.4 ), and the separate determination of total iron as iron oxide (Fe 2 O 3 ), titania (TiO 2 ), chromium oxide (Cr 2 O 3 ), zirconia (ZrO 2 ), and ignition loss. Included are procedures for the alkaline earths and alkalies. High-alumina sands may contain as much as 5 to 6 % total alkalies and alkaline earths. It is recommended that the alkalies be determined by flame photometry and the alkaline earths by absorption spectrophotometry. 1.2 These test methods, if followed in detail, will provide interlaboratory agreement of results. Note 1: For additional information, see Test Methods C169 and Practices E50 . 1.3 These test methods appear in the following order: Procedures for Referee Analysis: Section Silica (SiO 2 )—Double Dehydration 10 Total R 2 O 3 —Gravimetric 11 Fe 2 O 3 , TiO 2 , ZrO 2 , Cr 2 O 3 , by Photometric Methods and Al 2 O 3 by Complexiometric Titration 12 – 17 Preparation of the Sample for Determination of Iron Oxide, Titania, Alumina, and Zirconia 12 Iron Oxide (as Fe 2 O 3 ) by 1,10-Phenanthroline Method 13 Titania (TiO 2 ) by the Tiron Method 14 Alumina (Al 2 O 3 ) by the CDTA Titration Method 15 Zirconia (ZrO 2 ) by the Pyrocatechol Violet Method 16 Chromium Oxide (Cr 2 O 3 ) by the 1,5-Diphenylcarbo- hydrazide Method 17 Procedures for Routine Analysis: Silica (SiO 2 )—Single Dehydration 19 Al 2 O 3 , CaO, and MgO—Atomic Absorption Spec- trophotometry 20 – 25 Na 2 O and K 2 O—Flame Emission Spectrophotometry 26 - 27 Loss on Ignition (LOI) 28 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 3.1 These test methods can be used to ensure that the chemical composition of the glass sand meets the compositional specification required for this raw material. 3.2 These test methods do not preclude the use of other methods that yield results within permissible variations. In any case, the analyst should verify the procedure and technique used by means of a National Institute of Standards and Technology (NIST) standard reference material or other similar material of known composition having a component comparable with that of the material under test. A list of standard reference materials is given in the NIST Special Publication 260 , current edition.