1.1 本规程涵盖了从岩心筒取样器中获取土壤进行化学和物理分析的程序，重点是保持所关注化学污染物代表性的收集和处理程序。岩心筒取样器最初是空的（中空的），直到将其推入地面，以在干扰最小的情况下收集和取回圆柱形土壤样品。设备的选择和样品处理程序取决于土壤性质、采样深度和所关注的化学污染物的一般性质，即挥发性有机化合物、半挥发性有机化合物和有机污染物- 挥发性有机化合物和无机成分。所述取样程序旨在保持污染物的代表性浓度，而不管其物理状态如何，即固体、液体或气体。 1.2 本实践中讨论了四种一般类型的岩心筒取样器:分裂筒、环形内衬筒、薄壁管和实心筒取样器。 1.3 本文件未涵盖可用于土壤样本采集的所有岩心筒装置。 1.4 所述程序可能适用于也可能不适用于处理样品，以评估某些岩土特性，例如土壤孔隙度。 注1: 在开始任何侵入性勘探之前，应检查现场是否有地下设施。 1.5 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和健康实践，并确定监管限制的适用性。 ====意义和用途====== 4.1 在环境调查期间，通常在从表面、渗流区（术语）收集土壤后对其进行分析 D653 )有时从地下水位以下确定和量化化学污染物的存在。 污染物是一种典型的危险物质，通常不存在或自然存在，但浓度异常高（指南 D4687 ). 样本的三维空间阵列通常可以提供有关污染物迁移来源和路径的信息。结果信息用于指导补救和纠正措施，或用于监测目的。使用岩心筒取样器获取土壤样本涉及将该设备打入地面，然后将其取回进行样本处理。通常可以接受几种推进岩心筒的方法（例如，试验方法 D1586 实践 D1587 实践 D3550 指导 D4700 指导 D5784 指导 D5875 指导 D5876 实践 D6151 指导 D6282 ，和指南 D6286 ). 应避免使用钻井液（液体或空气）的钻井方法，因为它们更容易受到交叉污染（见 5.1.6 ).

1.1 This practice covers procedures for obtaining soils from core barrel samplers for chemical and physical analysis, with an emphasis on the collection and handling procedures that maintain the representativeness of the chemical contaminants of concern. Core barrel samplers are initially empty (hollow) until they are pushed into the ground to collect and retrieve a cylindrical soil sample with minimal disturbance. The selection of equipment and the sample handling procedures are dependent on the soil properties, the depth of sampling, and the general properties of the chemical contaminants of concern, that is, volatile organic compounds, semi-volatile organic compounds, and inorganic constituents. The sampling procedures described are designed to maintain representative concentrations of the contaminants regardless of their physical state(s), that is, solid, liquid or gas. 1.2 Four general types of core barrel samplers are discussed in this practice: split-barrel, ring-lined barrel, thin-walled tube, and solid-barrel samplers. 1.3 This document does not cover all the core barrel devices that are available for the collection of soil samples. 1.4 The procedures described may or may not be applicable to handling of samples for assessing certain geotechnical properties, for example, soil porosity. Note 1: Prior to commencement of any intrusive exploration, the site should be checked for underground utilities. 1.5 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. ====== Significance And Use ====== 4.1 Often during environmental investigations, soils are analyzed after being collected from the surface, the vadose zone (Terminology D653 ) and sometimes from below the ground water table to identify and quantify the presence of a chemical contaminant. A contaminant is a substance that is typically hazardous and either is not normally present or that occurs naturally but is of an uncharacteristically high concentration (Guide D4687 ). A three-dimensional spatial array of samples can often provide information as to the source and route(s) of migration of the contaminant. The resultant information is used to direct remedial and corrective actions or can be used for monitoring purposes. Obtaining a soil sample with a core barrel sampler involves driving this device into the ground and then retrieving it for sample processing. Several methods for advancing a core barrel are generally acceptable (for example, Test Method D1586 , Practice D1587 , Practice D3550 , Guide D4700 , Guide D5784 , Guide D5875 , Guide D5876 , Practice D6151 , Guide D6282 , and Guide D6286 ). Drilling methods that use drilling fluids (liquids or air) should be avoided because they are more susceptible to cross-contamination (See 5.1.6 ).