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| Environmental impact of Mardi Gras beads ： ウィキペディア英語版 |
Environmental impact of Mardi Gras beads
When the parade season ended in 2014, the New Orleans city government spent $1.5 million to pick up about 1,500 tons of Mardi Gras-induced waste, consisting mostly of beads. This is a recurring problem every year for the city. In addition, the city must also deal with the environmental repercussions endured after Mardi Gras. Because they are not biodegradable and contain high amounts of heavy metals, Mardi Gras beads put the local
environment and health of southern Louisianians at risk.
==Bead composition==
Polyethylene and polystyrene are popular plastics used in beads. Polystyrene is very stable and can last for many decades as the beads lay in landfills. Eventually, it will begin to slowly oxidize via UV light from the sun. In contrast, polystyrene cannot decompose with UV radiation and biodegrades extremely slowly.
Lead, cadmium, and other elements have been detected in beads in extremely high amounts through various analytical techniques.〔 Many of these elements exceed the suggested safety limits set by the Consumer Product Safety Commission. For example, the safe amount of lead in a product is 100 ppm; however, there have been findings where the amount of lead in a bead surpassed the limit 300 times over.〔 This threatens parade-goers with exposure to high amounts of lead, especially younger children that could potentially put the beads in their mouths.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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