1.1 本试验方法用于测定饮用水、地表水以及生活和工业废物中的总氰化物。氰化物离子（CN – )，水中的氰化氢（HCN（aq）），以及锌、铜、镉、汞、镍、银和铁的氰基络合物可通过该试验方法测定。来自Au（I）、Co（III）、Pd（II）和Ru（Ⅱ）络合物的氰化物离子仅被部分测定。 1.2 方法检出限（MDL）为1.0μg/L氰化物，最低限度（ML）为3μg/L。 该方法的适用范围为3 μg/L至500 μg/L氰化物，使用200 μL样品环路。通过样品稀释或改变样品回路体积，扩大范围以分析更高浓度。 1.3 有使用分段流量分析（SFA）和流动注射分析（FIA）设备经验的分析员或在此类合格人员的密切监督下工作的分析员可以使用此测试方法。 1.4 以国际单位制表示的数值应视为标准。本标准不包括其他计量单位。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者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。 具体危害说明见 8.5 和Section 9 . 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 5.1 氰化物和氰化氢具有剧毒。已制定法规，要求监测工业和生活废水以及地表水中的氰化物。 4. 5.2 本试验方法适用于天然水、盐水和废水。 5.3 该试验方法可用于废水处理设施的过程控制。 5.4 试验方法中概述的现场试验 D2036 ，附件A1，可用于检测水或废水中的氰化物和硫氰酸盐，并近似其浓度。

1.1 This test method is used for determining total cyanide in drinking and surface waters, as well as domestic and industrial wastes. Cyanide ion (CN – ), hydrogen cyanide in water (HCN(aq)), and the cyano-complexes of zinc, copper, cadmium, mercury, nickel, silver, and iron may be determined by this test method. Cyanide ions from Au(I), Co(III), Pd(II), and Ru(II) complexes are only partially determined. 1.2 The method detection limit (MDL) is 1.0 μg/L cyanide and the minimum level (ML) is 3 μg/L. The applicable range of the method is 3 μg/L to 500 μg/L cyanide using a 200 μL sample loop. Extend the range to analyze higher concentrations by sample dilution or changing the sample loop volume. 1.3 This test method can be used by analysts experienced with equipment using segmented flow analysis (SFA) and flow injection analysis (FIA) or working under the close supervision of such qualified persons. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Specific hazard statements are given in 8.5 and Section 9 . 1.6 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 and hydrogen cyanide are highly toxic. Regulations have been established to require the monitoring of cyanide in industrial and domestic wastewaters and surface waters. 4 5.2 This test method is applicable for natural water, saline waters, and wastewater effluent. 5.3 This test method may be used for process control in wastewater treatment facilities. 5.4 The spot test outlined in Test Methods D2036 , Annex A1, can be used to detect cyanide and thiocyanate in water or wastewater, and to approximate its concentration.