3. Trihalomethanes - EFRAC | Drug, Food, Gas, Proficiency Testing Laboratory
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    Trihalomethanes

    Chlorination of water kills bacteria and viruses and contributes to maintenance of public health. However, the same is not without side effects. Trihalomethanes (THMs) are byproducts of chlorine & chloroamine disinfection processes. Chlorine ion reacts with free organic matter to form THMs (chloroform, bromodichloromethane, dibromochloromethane, and bromoform) with levels varying with temperature, season, amount of chlorine used & plant material in water among others. THM’s are considered potentially carcinogenic.

    THM gets ingested on consumption of vegetables washed with and by eating contaminated meat of animals through drinking water. Direct inhalation while showering occurs on account of volatility of THM’s. EPA has stipulated 80 parts/billion/year as the maximum amount allowable. Chloroaminem may cause nitrification and corrosion and increase exposure to other byproducts, such as N-nitrosodimethylamine (NDMA). Testing for presence and quantification of THMs is thus necessary.

    EFRAC’s facilities include different branches of research and analysis like drugs and pharmaceutical services, microbiology, research and development, trace and ultra-trace, analytical services for food and water, leachable and extractable studies, stability studies, environmental services and training.

    PARAMETERS

    • Bromoform
    • Dibromochloromethane
    • Bromodichloromethane
    • Chloroform
    • Fluoroform
    • Chlorodifluoromethane Iodoform

    INSTRUMENTS

    • GC-MS/HS • GC-MS/P&T

    METHODS

    • ASTM • APHA • AOAC • ISO • USEPA