细气泡技术 水中细气泡分散体中气体含量的测定评价方法 第2部分：氢含量

[中文适用范围]： 本文件规定了超细气泡 (UFB) 分散体中氢含量的评估方法。滴定（氧化测定）法可用作估算氢 UFB 分散体中氢含量的快速方法。检测下限为 0.1 mg/l，可接受的精度范围在 0.2 mg/l 和 1.6 mg/l 之间。分散体中氧化或还原物质的存在会影响测量精度。气相色谱法具有相当高的精度范围和检测下限。水中存在 UFB 不会影响测量结果。水中存在氧化或还原物质也不会影响测量精度。但是，测量过程很耗时。注意本文件仅提供确定 UFB 分散体中氢含量的方法，不涉及氢 UFB 分散体应用的具体效果。 [外文原描述]： This document specifies the evaluation methods for hydrogen content in ultrafine bubble (UFB) dispersions. The titration (oxidimetry) method can be used as a quick method to estimate the hydrogen content in hydrogen UFB dispersions. The lower limit of detection is 0,1 mg/l, and the range with acceptable accuracy is between 0,2 mg/l and 1,6 mg/l. The existence of oxidizing or reducing substances in dispersions influences measurement accuracy. The gas chromatographic method features a considerably high accuracy range and lower limit of detection. The existence of UFBs in water does not influence the measurement results. The existence of oxidizing or reducing substances in water does not affect the measurement accuracy either. However, the measurement procedure is time consuming. NOTE This document only provides a method for determining hydrogen contents in UFB dispersions and does not involve the specific effects of hydrogen UFB dispersion application.