1.1 本规程涵盖水形成沉积物的X射线光谱化学分析。 1.2 本规程适用于测定样品中大量存在的原子序数为11或更高的元素（通常高于0.1 %). 1.3 以国际单位制表示的数值应视为标准值。国际单位制后括号中给出的值仅供参考，不被视为标准值。 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 确定了存在于水成沉积物中的某些元素。估算了元素的浓度水平。 5.2 沉积物分析有助于提供适当的水调节。 5.3 水在其所有阶段形成的沉积物可进一步分类为水垢、污泥、腐蚀产物或生物沉积物。沉积物的整体成分或沉积物的某些部分可通过化学或光谱分析确定； 实际上作为化学物质存在的成分可以通过显微镜或X射线衍射研究进行鉴定。微生物可以通过显微镜或生物方法进行鉴定。

1.1 This practice covers X-ray spectrochemical analysis of water-formed deposits. 1.2 The practice is applicable to the determination of elements of atomic number 11 or higher that are present in significant quantity in the sample (usually above 0.1 %). 1.3 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered 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 Certain elements present in water-formed deposits are identified. Concentration levels of the elements are estimated. 5.2 Deposit analysis assists in providing proper water conditioning. 5.3 Deposits formed from or by water in all its phases may be further classified as scale, sludge, corrosion products, or biological deposits. The overall composition of a deposit or some part of a deposit may be determined by chemical or spectrographic analysis; the constituents actually present as chemical substances may be identified by microscope or X-ray diffraction studies. Organisms may be identified by microscopical or biological methods.