VOC浓度及木制品甲醛释放量检测用大气候室

VOC浓度及木制品甲醛释放量检测用大气候室

概述/原理：

将已知表面积的试件，放入温度、湿度、空气流速和空气置换率控制在一定值的测试箱内。甲醛从试件中释放出来，与箱内空气混合，定期抽取箱内空气，从箱中抽取空气通过盛有水的洗气瓶测定水中吸收的甲醛浓度。测试箱中空气的甲醛浓度由洗气瓶中的甲醛浓度和抽出的空气体积计算，用毫克每立方米（mg/m3）表示。取样是周期性的，直到测试箱内甲醛浓度达到平衡状态。

适用标准：

Standard Test Method for Determining Formaldehyde Concentrations in Air and Emission Rates from Wood Products Using a Large Chamber，ASTM标准 E1333-96

Standard Guide for Small-Scale Environmental Chamber Determinations 0f Organic Emissions From Indoor Materials／Products ASTM标准D 5116-97

Standard Practice for Determination of Volatile Organic Compounds (Excluding Formaldehyde) Emissions from Wood-Based Panels Using Small Environmental Chambers Under Defined Test Conditions ASTM标准D 6330-98

Standard Practice for Full-Scale Chamber Determination of Volatile Organic Emissions from Indoor Materials／Products ASTM D 6670-01