1.1 本规程适用于氰化物分析水样的收集和保存。本规程涉及氰化物分析之前已知干扰的缓解。指出了现场采样人员和实验室的职责。 1.2 建议使用本实施规程中描述的采样、保存和减少干扰程序，通过试验方法分析总氰化物、有效氰化物、弱酸可分离氰化物和游离氰化物 D2036 , D4282 , D4374 , D6888 , D6994 , D7237 , D7284 和 D7511 . 本规程中提供的信息也可应用于氰化物的其他分析方法，例如EPA法 335 4. 1.3 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。 1.4 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====== 5.1 经常对水样中的氰化物进行分析，以证明其符合监管要求；然而，不适当的样品收集或预处理可能会导致显著的正偏差或负偏差，可能导致不必要的许可证违规或未检测到的氰化物释放到环境中。

1.1 This practice is applicable for the collection and preservation of water samples for the analysis of cyanide. This practice addresses the mitigation of known interferences prior to the analysis of cyanide. Responsibilities of field sampling personnel and the laboratory are indicated. 1.2 The sampling, preservation and mitigation of interference procedures described in this practice are recommended for the analysis of total cyanide, available cyanide, weak acid dissociable cyanide, and free cyanide by Test Methods D2036 , D4282 , D4374 , D6888 , D6994 , D7237 , D7284 , and D7511 . The information supplied in this practice can also be applied to other analytical methods for cyanide, for example, EPA Method 335.4. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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 ====== 5.1 Cyanide is routinely analyzed in water samples, often to demonstrate regulatory compliance; however, improper sample collection or pretreatment can result in significant positive or negative bias potentially resulting in unnecessary permit violations or undetected cyanide releases into the environment.