Volatile Organic Compounds (VOCs)

Is a group of volatile organic compounds that vaporizes into the air at normal temperature and pressure. Most molecules contain carbon and hydrogen atoms may have oxygen or Chlorine Evaporation at room temperature. In our daily lives, we receive VOCs from many products such as paint used at home, cigarette smoke, bleach, solvents in printing, paint spraying from cars, industrial plants, cleaning agents, hair dye solutions and reagents curling, insecticides, combustible substances, drinking water, drinks, food, organic substance. Vapors accumulated over a long period of time will have a biological effect and might be harmful to health.

VOCs Classifieds by the molecules into two groups.

  1. Non-chlorinated Vocs or Non-halogenated Hydrocarbons include: Non-chlorinated volatile hydrocarbons in the molecule include aliphatic hydrocarbons (such as fuel oils, gasoline, hexane, industrial solvents, alcohols, aldehydes, ketones, and hexane) and aromatic hydrocarbons (eg, Toluene, benzene, ethylbenzene, xylenes, styrene, phenol). These VOCs come from the environment. Combustion of plastic waste, materials, solvents, paints, etc., has a negative effect on health.
  2. Chlorinated Vocs or halogenated hydrocarbons are volatile hydrocarbons containing chlorine in the molecule, which is a synthetic chemical used in the chlorinated industry. VOCs are more toxic and more stable in the environment than the first. Non-chlorinated VOCs have a carbon-bonding structure and are extremely durable. Difficult to decompose in physical, biological or physical way. Highly persistent and persistent bioaccumulation is unlikely to interfere with the activity of genetic material or inhibit biochemical reactions in cells. And have a carcinogenic effect. Or stimulate cancer.

Where can VOCs be found?

We can find VOCs in our daily lives. Manufacturing industries and from a wide range of products such as petrochemicals, refineries, paints and adhesives, leather goods, pesticides, cosmetics, fragrances, spray deodorants. Chemicals, construction, cigarette smoke, bleach, printing solvent, paint sprayer, industrial, cleaning, color and curling, insecticide, substance caused from burning and exhaust of the car as well.

VOCs from the use of solvents in most products are up to 29%, followed by vehicles with 28%

Now ALS have service about checking and sampling VOCs are available to cover the following customer needs:

  1. Dynamic Headspace Outgassing in Hard Disk Drive and Consumable used in cleanroom rooms. (Active Sampling Methodology).
  2. VOCs in Clean Room Workplace (Active Sampling Methodology).
  3. VOCs in Compressed Air Sample (Passive Sampling Methodology).
  4. VOCs in Printer Workplace (Passive Sampling Methodology).

By all testing methods mentioned above. Use a Carbo trap Tube and analyze it with TDU-GCMS (Thermal Desorption Unit-Gas Chromatography Mass Spectrometry