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kevin-chow
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Danger of PVC
Beyond your imagination !!!
Environment & humanWhole product life cycle: production use disposal
Production: • Releases of EDC and VCM carcinogens during process; • Release of heavy distillate material
Use: • Release of toxicants in PVC products
Disposal: • landfill cause leachates • incinerated generate dioxin
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
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 river water polluted by cadmium Kidney disease & Osteomalacia
Use
• the use of PVC products threaten human health
On 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
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
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