1.1 本试验方法涵盖了使用电感耦合等离子体发射光谱法（ICP-OES）和电感耦合等离子体质谱法（ICP-MS）分析来测定由天然或人造纤维的任何组合制成的消费纺织品中总银的质量分数。建议将ICP-OES或ICP-MS分析作为测试和量化纺织品中银的第一步，结果可用于通知后续更详细的分析，作为指南中所述分层方法的一部分 E3025 确定纺织品是否含有银纳米材料。 1.2 本试验方法规定了酸消解，以使用适当的内标从纺织品样品中制备试样溶液，然后使用ICP进行外部校准和分析- OES或ICP-MS用于量化总银。 1.3 本试验方法被认为为由人造丝、棉花、聚酯和莱卡纤维制成的含有金属银的纺织品提供了定量结果（见第节） 17 ). 分析员有责任确定本试验方法对其他纺织基质和银形态的功效（达到计划和预期分析结果的能力）。 1.4 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他测量单位。 1.5 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。 1.6 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 银可用于处理消费类纺织品，以增强抗菌（真菌、细菌、病毒）性能 ( 3. , 4. ) . 在纺织品生命周期的任何时候，都可能需要测量存在的银量。本标准规定了基于ICP-OES或ICP-MS分析的测试方法，制造商、生产者、分析师、决策者、监管机构和其他人可用于测量纺织品中的总银。 如指南中所述 E3025 ，在测量发现的银的形状和尺寸之前，测定消费纺织品中的总银是分层方法的一个组成部分，该方法用于确定银是否存在，可能以纳米材料的形式存在（纳米尺度中的一个或多个外部尺寸）。仅ICP-OES或ICP-MS分析不足以确定纺织品是否含有银纳米材料。 注4: 用于处理纺织品的银有许多不同的化学和物理形式，本指南对这一主题进行了概述 E3025 . 5.2 如指南中所述 E3025 ，随着时间的推移，纺织品中的银含量可能会减少，因为银金属和银化合物可以与氧和环境中存在的其他氧化还原（氧化还原）活性剂反应，形成可溶离子物种，这些离子物种通过与水分接触而释放（例如，从环境湿度、洗涤、体汗、雨水或其他来源释放）。 因此，如果在纺织品中测量银，结果可能仅表明物品生命周期中的这一时刻，并且需要非常小心地从结果中得出时间推断。 5.3 如果银是通过ICP-OES或ICP-MS分析测量的，则需要额外的分析来阐明银在纺织品样本中的形式。这一步骤是必要的，因为ICP-OES或ICP-MS结果是针对不依赖于化学和物理形式的总银的，并且纺织品可以用尺寸从纳米级（例如，盐纳米粒子）到微米级（例如，颗粒或纤维）的银进行处理。 5.4 如果ICP-OES未检测到银，则应使用更灵敏的ICP-MS确定试样中是否存在银。如果使用适当的（适用的）分析技术在纺织品样品中未检测到银，则可以终止测试。 注5: 典型的方法检测限为ICP-OES的0.6µg Ag/L和ICP-MS的0.002µg Ag/L，与成功用于检测一系列产品（包括运动纺织品和伤口敷料）中银的限值相当 ( 2. ) . 5.5 ICP-OES或ICP-MS分析的结果可能是定性或定量的，这取决于织物基质消化程序的功效。无论如何，建议将ICP-OES或ICP-MS分析作为筛选纺织品中是否存在银的第一步，结果可用于通知后续更详细的分析，作为确定纺织品是否包含银纳米材料的分层方法的一部分。

1.1 This test method covers the use of inductively coupled plasma–optical emission spectrometry (ICP-OES) and inductively coupled plasma–mass spectrometry (ICP-MS) analyses for determination of the mass fraction of total silver in consumer textile products made of any combination of natural or manufactured fibers. Either ICP-OES or ICP-MS analysis is recommended as a first step to test for and quantify silver in a textile and results can be used to inform subsequent, more detailed analyses as part of the tiered approach described in Guide E3025 to determine if a textile contains silver nanomaterial(s). 1.2 This test method prescribes acid digestion to prepare test sample solutions from samples of textiles utilizing an appropriate internal standard followed by external calibration and analysis with either ICP-OES or ICP-MS to quantify total silver. 1.3 This test method is believed to provide quantitative results for textiles made of fibers of rayon, cotton, polyester, and lycra that contain metallic silver (see Section 17 ). It is the analyst’s responsibility to establish the efficacy (ability to achieve the planned and desired analytical result) of this test method for other textile matrices and forms of silver. 1.4 Units— The values stated in SI units are to be regarded as standard. No other units of measurements 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. 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 Silver may be used to treat consumer textile products to provide enhanced antimicrobial (fungi, bacteria, viruses) properties ( 3 , 4 ) . At any point in a textile product’s lifecycle, there may be a need to measure the amount of silver present. This standard prescribes a test method based on ICP-OES or ICP-MS analysis that manufacturers, producers, analysts, policymakers, regulators, and others may use for measurement of total silver in textiles. As described in Guide E3025 , determination of total silver in a consumer textile product is one component of a tiered approach to determine if silver is present, possibly as nanomaterial(s) (one or more external dimensions in the nanoscale), prior to measuring the form and dimension of the Ag that is found. ICP-OES or ICP-MS analysis alone is not sufficient to determine whether a textile contains silver nanomaterial(s). Note 4: There are many different chemical and physical forms of silver that are used to treat textiles and an overview of this topic is provided in Guide E3025 . 5.2 As described in Guide E3025 , the amount of silver in a textile can decrease over time as silver metal and silver compounds can react with oxygen and other oxidation-reduction (redox) active agents present in the environment to form soluble ionic species which are released by contact with moisture (for example, from ambient humidity, washing, body sweat, rain, or other sources). Hence, if silver is measured in a textile, the result may only be indicative of that moment in the article’s life cycle and great care is necessary in drawing temporal inferences from the results. 5.3 If silver is measured by ICP-OES or ICP-MS analysis, additional analyses are needed to elucidate the form of silver in the textile specimen. This step is necessary because ICP-OES or ICP-MS results are for total silver independent of chemical and physical form and textiles may be treated with silver in sizes that range from the nanoscale (for example, salt nanoparticles) to the micrometer scale (for example, particulates or fibers). 5.4 If no silver is detected by ICP-OES, the more sensitive ICP-MS should be used to determine if silver is present in a test specimen. If no silver is detected in a textile sample using appropriate (fit for purpose) analytical techniques, then testing can be terminated. Note 5: Typical method detection limits are 0.6 µg Ag/L by ICP-OES and 0.002 µg Ag/L by ICP-MS which are comparable to limits successfully used to detect silver in a range of products, including sports textiles and wound dressings ( 2 ) . 5.5 Results of ICP-OES or ICP-MS analysis may be qualitative or quantitative, depending upon the efficacy of the digestion procedure for the textile matrix. Regardless, ICP-OES or ICP-MS analysis is recommended as a first step to screen for the presence of silver in a textile and results can be used to inform subsequent more detailed analyses as part of a tiered approach to determine if a textile contains silver nanomaterial(s).