1.1 这些试验方法描述了使用毛细管气相色谱法测定松节油和相关萜烯产品中α-蒎烯、β-蒎烯、双戊烯、萜烯醇和其他萜烯化合物的含量。测定单个萜烯化合物量的两种方法是“内标”法，该方法产生绝对值，和“面积百分比”法，该方法产生相对值。 1.2 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。标准使用者有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 注1: 总的来说，该试验方法具有良好的重复性，但再现性适中。 这种大于正常值的差异是参与者使用的气相色谱柱和其他变量的多样性的结果。这些变量，再加上测试产品的复杂组成，使一些工人能够分离其他人报告为一个峰的峰；因此，该测试方法在给定的实验室内对给定的GC具有极好的精度。然而，当必须进行实验室间比较时，必须严格定义GC操作条件。 ====意义和用途====== 5.1 早期表征松节油和相关萜烯产品的方法是基于物理性质，如规范中的物理性质 D13 和试验方法 D801 和 D802 ，并用填充柱气相色谱法测定主要成分（例如，α-蒎烯、β-蒎烯），如试验方法所示 D3009年 . 随着萜烯产品被广泛用作化工原料，产品中低浓度化合物的分离和定量变得更加重要。 这些试验方法中描述的毛细管气相色谱技术是进行这些分析的快速和方便的手段。

1.1 These test methods describe the determination of the amounts of α-pinene, β-pinene, dipentene, terpene alcohols, and other terpene compounds in turpentine and related terpene products using capillary gas chromatography. The two methods for determining the amount of the individual terpene compounds are the “internal standard” method, which yields absolute values, and the “area percent” method, which yields relative values. 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3 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 the standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1: Overall this test method gives excellent repeatability but only moderate reproducibility. This greater than normal differential is a consequence of the variety of gas chromatography (GC) columns and other variables used by participants. These variables, coupled with the complex composition of the test products, enabled some workers to separate peaks that others reported as one peak; thus, this test method gives excellent precision within a given laboratory on a given GC. When laboratory to laboratory comparison have to be made, however, it is essential that the GC operating conditions be defined closely. ====== Significance And Use ====== 5.1 Earlier methods for characterizing turpentine and related terpene products were based on physical properties, such as those in Specification D13 and Test Methods D801 and D802 , and packed column gas chromatography for the major constituents (for example, α-pinene, β-pinene) as in Test Method D3009 . As terpene products became widely used as chemical raw material, the separation and quantitation of compounds present at lower concentrations in the product became more important. The capillary gas chromatographic technique described in these test methods is a rapid and convenient means to perform these analyses.