Danger of pvc

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  • Over time, these additives leach out of vinyl products. Phthalates are typically present in indoor air at much higher concentrations than outdoor air due to their high concentrations in consumer products and building materials.
  • Danger of pvc

    1. 1. Danger of PVCBeyond your imagination !!!
    2. 2. Environment & humanWhole product life cycle: production use  disposalProduction:• Releases of EDC and VCM carcinogens duringprocess;• Release of heavy distillate material
    3. 3. Use:• Release of toxicants in PVC productsDisposal:• landfill cause leachates• incinerated generate dioxin
    4. 4. Production• vinyl chloride monomer (VCM) & ethylene dichloride (EDC) are by-products of PVCOn human: highly volatile VCM jeopardise workers’ health ( risk of liver / brain cancer) colourless EDC , inhalation/ direct contact may have toxic effect
    5. 5.  VCM & EDC are genotoxic  cause irreversible damage to DNA (e.g. Birth defects/ genetic diseases of descendants)On environment: improper treatment of VCM & EDC or other by-products contaminate (underground)water and sediment (e.g. alluvial soil)Case study:In Japan, consumption on rice irrigated by riverwater polluted by cadmium
    6. 6. Use• the use of PVC products threaten human healthOn human: PVC additives phthalate plasticizers increase risk of asthma PVC flooring  persistent wheezing, pneumonia, prolonged cough… etc metal stabilizers (e.g. lead) leach into potable water
    7. 7. Disposal• discarded PVC materials are hazardousOn human: phthalates and metals leach out of disposed products into landfill leachate groundwater contamination accidental PVC fire  permanent respiratory disease fire release dioxin  reproductive disorders, immune suppression
    8. 8. On environment: burning of chloride (major component of PVC) during combustion of incinerationRelease of toxic dioxin regarded as persistent organic pollutants (POPs), dioxin accumulate in atmosphere recycling of PVC is extremely difficult

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