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◉ Volatile Organic Compounds
Volatile organic compounds, commonly referred to as VOCs, are the abbreviations of the first letter of the three words Volatile Organic Compounds, and total volatile organic compounds are sometimes also represented by TVOC.
According to the definition of the World Health Organization (WHO), VOCs (volatile organic compounds) are various organic compounds with a boiling point of 50°C to 260°C at room temperature. In my country, VOCs refer to organic compounds with a saturated vapor pressure greater than 70 Pa at room temperature and a boiling point below 260 °C at normal pressure, or all organic compounds with a vapor pressure greater than or equal to 10 Pa and volatile at 20 °C.
It is usually divided into several categories such as non-methane hydrocarbons (NMHCs for short), oxygen-containing organic compounds, halogenated hydrocarbons, nitrogen-containing organic compounds, and sulfur-containing organic compounds.
According to their chemical structures, they can be further divided into eight categories: alkanes, aromatic hydrocarbons, alkenes, halogenated hydrocarbons, esters, aldehydes, ketones and others. The main components of VOC are: hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, which include: benzene series, organic chlorides, Freon series, organic ketones, amines, alcohols, ethers, esters, acids and petroleum hydrocarbon compounds Wait.
◉ Types of Volatile Organic Pollutants
There are many types of volatile organic compounds. Currently, there is no unified classification method, and the common classification is based on the nature of pollution sources. Mainly include the following:
(1) Organic solution. Organic solution is a solvent composed of organic matter as a medium. Common organic solutions include household cosmetics, shampoo products and detergents, as well as daily tools such as adhesives, paints, and aqueous coatings commonly used in life.
(2) Building materials. Building materials refer to some volatile odor materials used in construction projects, including coatings, plastic rice materials, foam insulation materials, artificial boards and other materials used in indoor and outdoor buildings.
(3) Interior decoration materials. Interior decoration materials refer to building interior coatings or other materials that are prone to volatile odors, including wall coatings, wallpapers, murals that are prone to volatile odors, and other materials.
(4) Fiber material. Fiber materials are materials made of natural fibers or synthetic fibers, and usually can be used as carpets, tapestries, chemical fiber curtains and other supplies.
(5) Office supplies. Some office supplies are volatile by themselves. For example, ink, and some of them are not volatile, but in the process of their work, due to the large amount of heat, some of the consumables are dissipated with the heat, such as copiers and printers. The process will emit a lot of harmful gases into the air.
(6) Outdoor industrial gas. Outdoor industrial gas refers to the gas emitted by industrial production or various machinery.
◉ Harm
Most VOCs are toxic, and some VOCs are carcinogenic; for example, some harmful substances such as benzene, polycyclic aromatic hydrocarbons, aromatic amines, resin compounds, aldehydes and nitrosamines in the atmosphere have carcinogenic effects on the body or produce true tumor effects; some Aromatic amines, aldehydes, halogenated alkanes and their derivatives, and vinyl chloride have mutagenic effects. Most volatile organic compounds are flammable, explosive and unsafe. Under sunlight, volatile organic compounds undergo photochemical reactions with nitrogen oxides, hydrocarbons and oxidants in the atmosphere to generate photochemical smog, which is harmful to human health and crop growth; the main components of photochemical smog are ozone, peroxyacetyl nitrate ( PAN), aldehydes and ketones, etc. They irritate people's eyes and respiratory system. Harm people's health and harm the growth of crops.
◉ Compliance Services
As a professional third-party testing and certification service organization, Jiayu Testing has qualifications such as CMA, CNAS, CBTL, CPSC, and has obtained laboratory accreditation from multiple authoritative certification agencies at home and abroad. The laboratory is strictly built and managed according to standards, equipped with advanced instruments and equipment, and has a skilled professional technical team with rich industry service experience and strong testing technology capabilities. It is proficient in various regulatory standards and provides volatile organic compound (VOCs) testing services to assist enterprises in actively responding to regulatory requirements and effectively improving product compliance. Welcome to contact us at 400-9269-886!
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