1.1 本指南提供了确定现场便携式定量铅分析仪器性能的指南。 1.2 本指南适用于现场便携式电分析和分光光度（包括反射率和比色）分析仪。 1.3 本文关注的样品基质包括油漆、灰尘、土壤和空气中的颗粒物。 1.4 本指南介绍了铅现场样品提取程序的预期性能特征，以及现场提取和现场便携式分析。 1.5 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 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====== 4.1 本指南旨在用于评估用于铅测定的现场便携式电分析或分光光度设备的性能，或两者兼而有之。 4.2 提供了基于现场的提取程序的预期性能标准。 4.3 可以使用本指南中引用的协议来确定关注的性能参数。 4.4 列出了用于评估现场便携式铅分析仪性能的示例参考材料。 4.5 有关质量保证问题的详尽细节不在本指南的范围内。本指南引用的参考文献中广泛讨论了适用的质量保证方面。

1.1 This guide provides guidelines for determining the performance of field-portable quantitative lead analysis instruments. 1.2 This guide applies to field-portable electroanalytical and spectrophotometric (including reflectance and colorimetric) analyzers. 1.3 Sample matrices of concern herein include paint, dust, soil, and airborne particles. 1.4 This guide addresses the desired performance characteristics of field-based sample extraction procedures for lead, as well as on-site extraction followed by field-portable analysis. 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. 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 ====== 4.1 This guide is intended for use in evaluating the performance of field-portable electroanalytical or spectrophotometric devices for lead determination, or both. 4.2 Desired performance criteria for field-based extraction procedures are provided. 4.3 Performance parameters of concern may be determined using protocols that are referenced in this guide. 4.4 Example reference materials to be used in assessing the performance of field-portable lead analyzers are listed. 4.5 Exhaustive details regarding quality assurance issues are outside the scope of this guide. Applicable quality assurance aspects are dealt with extensively in references that are cited in this guide.