The effects of various simulated test conditions, including expose area, temperature, humidity, light source and ventilation, on the concentrations of the volatile organic compounds ( VOCs) released from surface coating in a Simulated Indoor Surrounding Test Chamber were studied. A bi-component solvent based coating was coated on wood board and used as representative test sample. The concentrations of the released VOCs were measured by one-step thermal desorption gas chromatography. It was found that in closed surrounding, the concentrations increased obviously as increasing the expose area, temperature and humidity, and the concentrations under a common blue fluorescence lamp or a 365 nm ultraviolet lamp were around twice as large as that under a common white light fluorescence lamp. It was also found that the concentrations could be decreased greatly via a natural or mandatory ventilation.%本研究以双组分溶剂型涂料形成涂层为代表试样,应用模拟室内环境试验箱,采用一次热解吸气相色谱法测定涂层有机挥发物的散发浓度,研究不同模拟试验条件(暴露面积、温湿度、光源、通风等)对被测涂层有机挥发物的散发性影响.研究发现被测涂层有机挥发物散发浓度随暴露面积、温度、湿度的增大明显增大,使用普通蓝荧光灯或365nm的UV-A紫外灯光源照射被测涂层,挥发物的散发浓度比普通白光荧光灯成倍增大,自然通风和强制通风能大幅降低被测涂层有机挥发物的散发浓度.
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