Determination of formaldehyde emission with field and laboratory emission cell (FLEC) - Recovery and correlation to the chamber method
Determination of formaldehyde emission with field and laboratory emission cell (FLEC) - Recovery and correlation to the chamber method
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DOI：
10.1111/j.1600-0668.1999.00006.x
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发表时间：
1999-12-01
期刊：
影响因子：
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通讯作者：
Risholm-Sundman, M
中科院分区：
文献类型：
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作者：
Risholm-Sundman, M
木质建筑材料的甲醛释放量通常是在规定温度、湿度和通风率的大房间里测定的。本文介绍了一种更简单的测定甲醛释放量的方法——现场和实验室发射电池（FLEC），并与传统的室内法进行了比较。用浸渍2,4-二硝基苯肼（DNPH）的硅胶筒收集FLEC中的甲醛，并用高效液相色谱法进行分析。FLEC更容易操作，需要更小的样品，更少的分析，也比腔室法更灵活。可以测量样品不同部分的辐射。另一个优点是，该设备可以同时用于测定挥发性有机化合物（VOCs）的排放量。对于不同的建筑产品，FLEC法与腔室法具有良好的相关性。它也能很好地恢复。当两种不同的flc细胞在已知的甲醛源（排放量为0.06-0.7 mg/m(2)h）下进行测试时，平均回收率为98%。
The formaldehyde emission from wood-based building materials is usually determined in large chambers at a defined temperature, humidity and ventilation rate. In this article, a simpler method, the Field and Laboratory Emission Cell (FLEC), is described for determination of the formaldehyde emission and it is compared with the traditional chamber method. The formaldehyde from FLEC is collected on a silicagel cartridge impregnated with 2,4-dinitrophenylhydrazine (DNPH) and analysed with HPLC. The FLEC is easier to operate, requires a smaller sample, fewer analyses and is also more flexible than the chamber method. The emissions from different parts of a sample can be measured. Another advantage is that the equipment can be used to determine the volatile organic compounds (VOCs) emission at the same time. The FLEC method gives a good correlation to the chamber method for different building products. It also gives a good recovery. An average recovery of 98% was achieved, when two different FLEC-cells were tested with known formaldehyde sources with emissions of 0.06-0.7 mg/m(2)h.