Metal Stocks in Society â Scientific Synthesis - UNEP
Metal Stocks in Society â Scientific Synthesis - UNEP
Metal Stocks in Society â Scientific Synthesis - UNEP
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<strong>Metal</strong> <strong>Stocks</strong> <strong>in</strong> <strong>Society</strong> – <strong>Scientific</strong> <strong>Synthesis</strong><strong>Metal</strong> Reservoir Predom<strong>in</strong>ant<strong>Metal</strong>-conta<strong>in</strong><strong>in</strong>gF<strong>in</strong>al GoodsEnd-useFraction(percent)ReferenceEstimatedResidenceTime(years)ReferenceSnSnCans andconta<strong>in</strong>ersElectrical andelectronics27 % (4) —23 % (4) —Sn Construction Corrosion prevention 10 % (4) 30 – 50 (8)Sn Transport Corrosion prevention,solder10 % (4) 20 – 40 (5)TiCarbides,chemicals,metal andmetal alloys3 % (4) —W Cutt<strong>in</strong>g tools 50 % (11) 1 (11)W Light<strong>in</strong>g 22 % (11) —ZnBuild<strong>in</strong>g &constructionGalvanised steel(e.g., frames, pip<strong>in</strong>g),z<strong>in</strong>c alloys (e.g.,brass appliances),and pure z<strong>in</strong>c (e.g.,roof<strong>in</strong>g)48 % (18) 10 – 50 (5, 8)ZnTransportationMotor vehicles, vehicletires, and railwaytransport, sea andair transport36 % (18) 2-20 (5, 8)ZnBus<strong>in</strong>ess durablesMach<strong>in</strong>ery 7 % (18) —Zn Chemicals 5 % (18) —36
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