1.1 本试验方法涵盖湿蜡烛装置及其在测量大气氯化物沉积（单位时间内从大气中沉积的氯化物盐量）中的使用。 1.2 大气氯化物沉积数据可用于对特定区域（如大气试验场地）的腐蚀性进行分类。然而，必须谨慎考虑季节，因为空气中的氯化物在不同季节之间变化很大。 1.3 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。 1.4 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====== 3.1 本试验方法能够产生大气氯沉降的定量值，具体规定每天每平方米氯离子的毫克数（或从该值得出的其他单位）。 注1: 大气中的氯化物以液滴或固体颗粒的悬浮液形式存在。它们通过重力、风或布朗运动被输送到固体表面。这些传输机制是方向敏感的，因此垂直圆柱体不一定会接收到与水平板相同的通量，或具有不同大小和方向的物体。因此，使用这种方法来提供大气暴露中物体上氯化物沉积的指示可能在数量上不准确；然而，该技术已成功地对各种海洋位置的暴露程度进行了分类。 3.2 应确定采样地点和采样时间段。建议每月或30天的连续暴露计划用于现场表征。如果有特定的关注期，可以进行季节性监测。

1.1 This test method covers a wet candle device and its use in measuring atmospheric chloride deposition (amount of chloride salts deposited from the atmosphere on a given area per unit time). 1.2 Data on atmospheric chloride deposition can be useful in classifying the corrosivity of a specific area, such as an atmospheric test site. Caution must be exercised, however, to take into consideration the season because airborne chlorides vary widely between seasons. 1.3 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. 1.4 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 ====== 3.1 This test method is capable of generating quantitative values of atmospheric chloride deposition specifying milligrams of chloride ions per square metre per day (or other units derived from such values). Note 1: Chlorides in the atmosphere exist as a suspension of liquid droplets or solid particles. They are transported to solid surfaces by gravity, wind, or brownian motions. These transport mechanisms are direction-sensitive so that a vertical cylinder will not necessarily receive the same flux as a horizontal plate, or objects with different sizes and orientations. Therefore, the use of this approach to provide an indication of the deposition of chlorides on objects in atmospheric exposures may not be quantitatively accurate; however, this technique has been successful in classifying the severity of exposure in a variety of marine locations. 3.2 The sites where samples are to be taken and the sampling time periods should be established. A continuous program of monthly or 30-day exposures is recommended for site characterization. Seasonal monitoring may be performed if there are specific periods of interest.