What are volatile organic compounds (VOCs)? | US EPA
2024年3月5日 · Volatile organic compounds (VOCs) are emitted as gases from certain solids or liquids. VOCs include a variety of chemicals, some of which may have short- and long-term adverse health effects. Concentrations of many VOCs are consistently higher indoors (up to ten times higher) than outdoors.
Volatile organic compound - Wikipedia
VOC (volatile organic compounds) are all compounds that appear in the gas chromatogram between and including n-hexane and n-hexadecane. Compounds appearing earlier are called VVOC (very volatile organic compounds); compounds appearing later are called SVOC (semi-volatile organic compounds).
VOC（挥发性有机化合物）_百度百科
VOC是 挥发性有机化合物 （volatile organic compounds）的英文缩写，有时也用TVOC来表示（total volatile organic compounds）。 普通意义上的VOC就是指 挥发性有机物，按照世界卫生组织的定义，如果在常压101.32 kPa下沸点在 50℃-250℃的化合物，即常温下以气体形式存在；但是环保意义上的定义是指活泼的一类挥发性有机物，即会产生危害的那一类挥发性有机物。 VOC的结构决定了它们在常温下能够迅速转变为气体状态。 这一类化合物包括多种成分，如甲醛、 …
挥发性有机化合物 - 维基百科，自由的百科全书
揮發性有機化合物（英語： Volatile Organic Compounds ，首字母縮略字：VOCs），有時也用TVOC來表示 (英語： Total Volatile Organic Compound)。 按照 世界衛生組織 的定義，如果在氣壓101.32 kPa 下，該化合物的 沸點 在50℃-250℃，就是揮發性有機物。
Technical Overview of Volatile Organic Compounds | US EPA
2024年3月5日 · Volatile organic compounds (VOC) means any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates and ammonium carbonate, which participates in atmospheric photochemical reactions, except those designated by EPA as having negligible photochemical reactivity 2.
挥发性有机物 - 百度百科
挥发性有机物（英文名: Volatile Organic Compounds），是指在标准状态下具有较高饱和蒸气压（大于13.33Pa）、低沸点、小分子量，且在常温下易于挥发的有机化合物。这种物质是大气的主要污染物之一，常用VOC或VOCs来表示，而总挥发性有机物则用TVOC来代表。
揮發性有機化合物 - 維基百科，自由的百科全書
揮發性有機化合物（英語： Volatile Organic Compounds ，首字母縮略字：VOCs），有時也用TVOC來表示 (英語： Total Volatile Organic Compound)。 按照 世界衛生組織 的定義，如果在氣壓101.32 kPa 下，該化合物的 沸點 在50℃-250℃，就是揮發性有機物。
Volatile Organic Compounds (VOCs) | U.S. Geological Survey - USGS.gov
2019年2月27日 · Volatile organic compounds (VOCs) are chemicals that both vaporize into air and dissolve in water. VOCs are pervasive in daily life, because they’re used in industry, agriculture, transportation, and day-to-day activities around the home. Once released into groundwater, many VOCs are persistent and can migrate to drinking-water supply wells.
What is the definition of VOC? | US EPA - U.S. Environmental …
2024年3月18日 · " Volatile organic compounds (VOC) means any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates, and ammonium carbonate, which participates in atmospheric photochemical reactions. Different VOCs have different levels of reactivity.
Introduction to VOCs | Indoor Air - Lawrence Berkeley National …
In the field of IAQ research, the term "volatile organic compound" or "VOC" refers to any of thousands of organic (carbon-containing) chemicals that are present mostly as gases at room temperature. Inorganic carbon-containing gases such as carbon dioxide and carbon monoxide are excluded from this definition.