Formaldehyde Determination in Automobile / 环境与健康杂志

ABSTRACT

Objective To select the optimum condition for the determination of formaldehyde in the car and to understand the formaldehyde pollution situation,dynamic change law and the influence factors.Methods The national standard method,acetyl acetone spectrophotometer,was used to determine formaldehyde.The investigated cars were the ones which left the factory for one month,three months,six months and one year.The sampling time,rate of flow and coloration time were determined.The influence of temperature and ventilation on the formaldehyde content in the car was analyzed.Results The formaldehyde content in the car was influenced by the temperature,ventilation,date of production and the type of the car.The optimum conditions for the determination of formaldehyde in the car were as follows,10 min of sampling time,0.3 L/min of sampling flow rate and 3 min of coloration time.Conclusion Ventilation is an effective measure to reduce the formaldehyde content in the car.Higher temperature is good for the release of formaldehyde.The formaldehyde content in the car will reach the standard limit in one year after left factory.