1.1 本指南适用于可能含有挥发性有机化合物的土壤。 1.2 本指南提供了使用一次性手持式土芯取样器收集和临时储存土壤样品以进行挥发性有机物分析的一般程序和注意事项。 1.3 通常，收集初始土壤样本（见指南） D6169/D6169M 和 D6282/D6282M )然后使用一次性手持式土芯取样器从初始土芯样品中收集5或25 g土样。一次性手持式土芯取样器也可以用作样品储存室。建议将本标准与指南结合使用 D4547 , D4687 , D6169/D6169M , D6232 , D6282/D6282M , D6418 和 D6640 ，它提供了有关初始土壤芯样收集的信息。 1.4 单位- 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。所有观察值和计算值应符合实践中确定的有效数字和舍入准则 D6026 . 以国际单位制以外的单位报告试验结果不应视为不符合本标准。 1.5 本指南提供了有组织的信息收集或一系列选项，并不推荐具体的行动方案。本文件不能取代教育或经验，应与专业判断一起使用。并非本指南的所有方面都适用于所有情况。 本ASTM标准不代表或取代必须根据其判断给定专业服务的充分性的谨慎标准，也不应在不考虑项目的许多独特方面的情况下应用本文件。本文件标题中的“标准”一词仅表示该文件已通过ASTM共识程序获得批准。 1.6 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。 1.7 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====== 5.1 本指南适用于使用一次性手持式土芯取样器收集和储存约5或25 g土壤样品，用于挥发性有机物分析，以减少因挥发或生物降解而造成的污染物损失。通常，收集初始土芯样本（见指南） D6169/D6169M 和 D6282/D6282M )然后使用一次性手持式土芯取样器从初始土芯样品中收集5或25 g土样。一次性手持式土芯取样器也可以用作样品储存室。 5.2 土壤样品的物理完整性在样品收集、储存和实验室内转移以进行分析或保存期间得到保持。 5.3 在样品收集、储存和转移过程中，样品暴露在大气中的程度非常有限。 5.4 根据本指南采集的样品不需要实验室二次采样。样品直接从取芯体/储存室排放到适当的容器中，以便在分析实验室进行分析或保存，而不会破坏样品的完整性。不应从一次性手持式土芯取样器中进行二次采样，以获得较小的样本量进行分析。 5.5 本指南规定了样品在4±2°C的一次性手持式土芯取样器中最多48小时的储存。 5.6 本指南不在现场使用甲醇防腐剂或其他化学防腐剂。 因此，不存在与易燃性危险、运输限制或由于向现场样品中添加溶剂而稀释低挥发性浓度样品相关的问题。 5.7 一次性手持式土芯取样器是一次性设备。不得清洗或重复使用。 5.8 这种一次性手持式土芯取样器不能用于收集胶结材料、固结材料或碎片比装置口宽或粗糙到足以干扰适当取芯技术的材料。 注1: 本标准产生的结果的质量取决于执行该标准的人员的能力，以及所用设备和设施的适用性。 符合实践标准的机构 D3740 通常认为能够胜任和客观采样。本规程的使用者应注意遵守规程 D3740 本身并不能保证可靠的结果。可靠的结果取决于许多因素；实践 D3740 提供了一种评估其中一些因素的方法。 实践 D3740 是为从事土壤和岩石实验室测试和/或检查的机构开发的。因此，它并不完全适用于执行这种做法的机构。然而，这种做法的使用者应该认识到，实践的框架 D3740 适用于评估执行此实践的机构的质量。目前，还没有已知的合格国家机构来检查执行这种做法的机构。

1.1 This guide is intended for application to soils that may contain volatile organic compounds. 1.2 This guide provides a general procedure and considerations associated with using a disposable handheld soil core sampler to collect and temporarily store a soil sample for volatile organic analysis. 1.3 In general, an initial soil sample is collected (see Guides D6169/D6169M and D6282/D6282M ) and the disposable handheld soil core sampler is then used to collect the 5 or 25 g soil sample from the initial soil core sample. The disposable handheld soil core sampler can also serve as a sample storage chamber. It is recommended that this standard be used in conjunction with Guides D4547 , D4687 , D6169/D6169M , D6232 , D6282/D6282M , D6418 , and D6640 , as appropriate, which provide information on the collection of the initial soil core sample. 1.4 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. All observed and calculated values shall conform to the guidelines for significant digits and rounding established in Practice D6026 . Reporting of test results in units other than SI shall not be regarded as nonconformance with this standard. 1.5 This guide offers an organized collection of information or a series of options and does not recommend a specific course of action. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this guide may be applicable in all circumstances. This ASTM standard is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a project’s many unique aspects. The word “Standard” in the title of this document means only that the document has been approved through the ASTM consensus process. 1.6 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. 1.7 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 ====== 5.1 This guide is for the use of disposable handheld soil core samplers in collecting and storing approximately 5 or 25 g soil samples for volatile organic analysis in a manner that reduces loss of contaminants due to volatilization or biodegradation. In general, an initial soil core sample is collected (see Guides D6169/D6169M and D6282/D6282M ) and the disposable handheld soil core sampler is then used to collect the 5 or 25 g soil sample from the initial soil core sample. The disposable handheld soil core sampler can also serve as a sample storage chamber. 5.2 The physical integrity of the soil sample is maintained during sample collection, storage, and transfer in the laboratory for analysis or preservation. 5.3 During sample collection, storage, and transfer, there is very limited exposure of the sample to the atmosphere. 5.4 Laboratory subsampling is not required for samples collected following this guide. The sample is expelled directly from the coring body/storage chamber into the appropriate container for analysis, or preservation, at the analytical laboratory without disrupting the integrity of the sample. Subsampling from the disposable handheld soil core sampler should not be performed to obtain smaller sample sizes for analysis. 5.5 This guide specifies sample storage in the disposable handheld soil core sampler at 4 ± 2°C for up to 48 h. 5.6 This guide does not use methanol preservation or other chemical preservatives in the field. As a result, there are no problems associated with flammability hazards, shipping restrictions, or dilution of samples containing low volatile concentrations due to solvents being added to samples in the field. 5.7 The disposable handheld soil core samplers are single-use devices. They should not be cleaned or reused. 5.8 This disposable handheld soil core samplers cannot be used for collecting cemented material, consolidated material, or material having fragments wider than the mouth of the device or coarse enough to interfere with proper coring techniques. Note 1: The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D3740 are generally considered capable of competent and objective sampling. Users of this practice are cautioned that compliance with Practice D3740 does not in itself assure reliable results. Reliable results depend on many factors; Practice D3740 provides a means of evaluating some of those factors. Practice D3740 was developed for agencies engaged in the laboratory testing and/or inspection of soil and rock. As such, it is not totally applicable to agencies performing this practice. However, user of this practice should recognize that the framework of practice D3740 is appropriate for evaluating the quality of an agency performing this practice. Currently there is no known qualifying national authority that inspects agencies that perform this practice.