ISO 17168-2:2018标准是一项测试方法，用于评估光催化材料在室内照明环境下的空气净化性能，特别是对乙醛的去除效果进行评估。该标准适用于各种类型的光催化材料，包括半导体光催化材料和非半导体光催化材料。

该标准的测试方法主要包括以下步骤：

1. 准备测试样品：将光催化材料制成规定的形状和尺寸，并进行表面处理。

2. 测量测试样品的物理和化学性质：包括表面形貌、晶体结构、化学成分等。

3. 测量测试样品的光催化活性：使用紫外线或可见光照射测试样品，并测量其光催化活性。

4. 测量测试样品的空气净化性能：将测试样品置于室内照明环境下，加入一定浓度的乙醛，测量其去除效果。

5. 分析测试结果：根据测试结果，评估光催化材料的空气净化性能。

该标准的测试条件包括：室温为（20±5）℃，相对湿度为（50±10）%RH，照度为（300±50）lx，乙醛浓度为（0.1±0.01）mg/m3。

该标准的测试结果可以用于评估光催化材料的空气净化性能，并为相关产品的研发和生产提供参考。

相关标准
ISO 17168-1:2018 Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for air-purification performance of semiconducting photocatalytic materials under indoor lighting environment — Part 1: Removal of toluene
ISO 22197-1:2007 Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for air-purification performance of semiconducting photocatalytic materials — Part 1: Removal of nitrogen oxides
ISO 22197-2:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for air-purification performance of semiconducting photocatalytic materials — Part 2: Removal of acetaldehyde
ISO 22197-3:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for air-purification performance of semiconducting photocatalytic materials — Part 3: Removal of formaldehyde
ISO 22197-4:2008 Fine ceramics (advanced ceramics, advanced technical ceramics) — Test method for air-purification performance of semiconducting photocatalytic materials — Part 4: Removal of acetic acid