甲醛概念与危害
The Concept and Hazards of Formaldehyde
1、 甲醛概念及危害
1. The Concept and Hazards of Formaldehyde
甲醛，无色有刺激性气味气体，挥发性很强，化学式HCHO或CH₂O，略重于空气，空气中的甲醛一般在0.8-1.5米的高度聚集。会刺激人们的眼睛、呼吸道粘膜，导致流泪、嗓子疼痛、打喷嚏、咳嗽、呼吸困难等症状，还会诱发哮喘。世界卫生组织国际癌症研究机构将甲醛列为一类致癌物。
Formaldehyde, a colorless and pungent gas with strong volatility, has the chemical formula HCHO or CH ₂ O and is slightly heavier than air. Formaldehyde in the air generally accumulates at a height of 0.8-1.5 meters. It can irritate people's eyes and respiratory mucosa, causing symptoms such as tears, sore throat, sneezing, coughing, difficulty breathing, and can also trigger asthma. The International Agency for Research on Cancer of the World Health Organization lists formaldehyde as a carcinogen.
当室内空气甲醛浓度达到0.06-0.07mg/m³时，儿童就会发生轻微气喘；达到0.1mg/m³时，就有异味和不适感；达到0.5mg/m³时，可刺激眼睛，引起流泪；达到0.6mg/m³，可引起咽喉不适或疼痛。浓度更高时，可引起恶心呕吐，咳嗽胸闷，气喘甚至肺水肿；达到30mg/m³时，会立即致人死亡。
When the indoor formaldehyde concentration reaches 0.06-0.07mg/m ³ Children may experience mild wheezing; Up to 0.1mg/m ³ When there is an odor and discomfort; Up to 0.5mg/m ³ When used, it can irritate the eyes and cause tears to flow; Up to 0.6mg/m ³， May cause discomfort or pain in the throat. When the concentration is higher, it can cause nausea and vomiting, cough, chest tightness, asthma, and even pulmonary edema; Up to 30mg/m ³ It can immediately cause death.
2、 甲醛安全浓度标准
2. Formaldehyde safety concentration standard
1）中国标准：
1) Chinese standards:
<=0.08mg/m3（《民用建筑工程室内环境污染控制规范》GB50325-2012，Ⅰ类民用建筑标准，即住宅、医院、学校教室等，关闭门阳雕刻 手套生产设备 果树反光膜 北京纯水设备 保定网站制作 排水槽模具窗1h后进行检测），适用于建筑工程交付使用前对环境污染物的强制性控制规范。
<=0.08mg/m3 ("Code for Indoor Environmental Pollution Control of Civil Building Engineering" GB50325-2012, Class I civil building standard, i.e. residential buildings, hospitals, school classrooms, etc., tested after closing doors and windows for 1 hour), applicable to the mandatory control of environmental pollutants before the delivery and use of construction projects.