1.1 本规程描述了使用多个微晶测试分析可卡因的适用程序 ( 1- 6. ) . 2. 1.2 这些程序适用于以固体形式或可注射液体形式存在的可卡因。它们通常不适用于生物样品中可卡因的分析。 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 这些程序可以产生观察结果，表明可卡因或其对映体检测呈阳性，可以将其纳入实验室定义的分析方案。 1.5 本标准不能取代通过适当教育、培训和经验获得的知识、技能或能力（见实践） E2326 )并由具有此类学科特定知识、技能和能力的个人结合专业判断使用。 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 该技术涉及可卡因和沉淀剂之间的化学沉淀反应。形成的晶体的习惯和聚集可以用来区分可卡因和其他药物 ( 6. ) . 5.2 该技术可用于以盐或游离碱形式存在的可卡因。 5.3 该技术不区分盐和游离碱形式。

1.1 This practice describes procedures applicable to the analysis of cocaine using multiple microcrystal tests ( 1- 6 ) . 2 1.2 These procedures are applicable to cocaine, which is present in solid form or an injectable liquid form. They are not typically applicable to the analysis of cocaine in biological samples. 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 These procedures could generate observations indicating a positive test for cocaine or its enantiomers which could be incorporated into the analytical scheme as defined by the laboratory. 1.5 This standard cannot replace knowledge, skills, or abilities acquired through appropriate education, training, and experience (see Practice E2326 ) and is to be used in conjunction with professional judgment by individuals with such discipline-specific knowledge, skills, and abilities. 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 technique involves a chemical-precipitation reaction between cocaine and the precipitating reagent. The habit and the aggregation of the crystals formed could be used to distinguish cocaine from other drugs ( 6 ) . 5.2 This technique can be utilized on cocaine present in either the salt or free base form. 5.3 This technique does not distinguish between the salt and free base forms.