The variation of the inside air temperature of a car in sunshine is experimentally researched, and the comparison of the inside air temperatures of the car between with and without window tinted is also conducted. Furthermore, based on the concentration sampling method and the gas chromatography (GC) analyzing, the effect of the sample condition on the inside air formaldehyde content is investigated. The experimental results show that the maximum air temperature appears nearly at 13:30 p. m.. The temperature of air near the windshield glass is the highest compared with that of other interior position, and the measured maximum temperature is up to 66.1 t,while the air temperature at the positions above the driver seat and the rear seat has small deviation. When the car is parking, the inside air temperature of the car with window tinted is higher than that of the car without window tinted. For the high temperature can accelerate the release of the formaldehyde, which is greatly affected by the engine waste heat and the sunshine, the measured formaldehyde content at the place near the windshield glass is more than that of the position above the rear seat. The added decoration, such as the seat cushion, can serve to be another formaldehyde releasing source.%对比贴膜车与未贴膜车的内部空气温度,结合浓缩采样法和气相色谱分析方法,研究了车内空气温度随日照时间的变化规律以及采样条件对车内空气中甲醛含量的影响规律.结果表明:车内空气温度的最大值出现在中午1:30左右,前窗处温度最高,试验测得的最高温度可达66.1℃,而驾驶座和后座温度相差不大；当汽车停放时,贴膜车内温度高于未贴膜车内温度；发动机余热及日照对车内甲醛的释放具有重要影响,高温导致甲醛释放加速,汽车前窗处甲醛浓度大于后座上方的甲醛浓度；加装的车内装饰物(如坐垫等)是甲醛的另外一个释放源.
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