1.1本试验方法涵盖使用石墨炉原子吸收分光光度法（GF-AAS）在实验室测定合成海水中防污（AF）涂层释放以三丁基锡（TBT）表示的有机锡的速率。这并不排除使用其他分析方法来测量海水中的有机锡，如气相色谱法。 1.2以国际单位制表示的数值应视为标准值。括号中的英寸-磅单位仅供参考。 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和健康实践，并确定监管限制的适用性。 有关具体的危险说明，请参阅第7节。 ====意义和用途====== 本试验方法旨在提供一种实验室程序，以测量在恒温、pH值、盐度和周围海水中低重金属浓度的规定条件下浸泡期间溶剂溶性锡（三丁基锡和三苯锡）释放速率的变化。释放率的定量测量有助于选择材料、提供质量保证和理解性能机制。 本试验方法仅作为服务中有机锡释放率的指南。根据配方和环境，在使用中的防污漆系统的有机锡释放率在涂层系统的使用寿命内可能会有所不同。 停泊位置、操作时间表、服务时间、漆膜表面状况、温度、pH值和盐度的差异可能会影响结果，获得的结果可能不一定反映在服务中发生的实际三丁锡释放率，但提供了不同防污剂释放率特征的可靠比较。 该测试方法将用于表征自抛光共聚物和自由缔合防污涂料中三丁锡的早期释放速率模式，以及估计稳态释放。

1.1 This test method covers the laboratory determination of the rate at which organotin expressed as tributyltin (TBT) is released from an antifouling (AF) coating in synthetic sea water using graphite furnace atomic absorption spectrophotometry (GF-AAS). This does not exclude the use of other analytical methodology for measurement of organotin in sea water such as gas chromatography. 1.2 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are for information only. 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 7. ====== Significance And Use ====== This test method is designed to provide a laboratory procedure to measure changes in the release rates of solvent soluble tin (tributyl- and triphenyltin) that occur during a period of immersion under specified conditions of constant temperature, pH, salinity, and low heavy-metal concentrations in the surrounding sea water. Quantitative measurement of the release rate is necessary to help in selection of materials, in providing quality assurance, and in understanding the performance mechanism. This test method serves only as a guide for organotin release rates in service. Organotin release rates of antifouling (AF) paint systems in service can vary over the life of the coating system depending on the formulation and the environment. Differences in berthing locations, operating schedules, length of service, condition of paint-film surface, temperature, pH, and salinity can affect results, Results obtained may not necessarily reflect actual tributyltin release rates that will occur in service, but provide reliable comparisons of the release rate characteristics of different antifouling formulations. This test method will serve to characterize the early release rate pattern, as well as estimate the steady state release, of tributyltin from both self-polishing copolymer and free-association antifouling paints.