Leaching assessments of hazardous materials in cellular telephones

التفاصيل البيبلوغرافية
العنوان: Leaching assessments of hazardous materials in cellular telephones
المؤلفون: Oladele A. Ogunseitan, Jean-Daniel Saphores, A.A. Shapiro, John D. Lincoln
المصدر: Environmental sciencetechnology. 41(7)
سنة النشر: 2007
مصطلحات موضوعية: Toxicity characteristic leaching procedure, Hazardous Waste, Environmental engineering, General Chemistry, Electronic scrap, Animal science, Hazardous waste, Metals, Heavy, Environmental Chemistry, Environmental science, Environmental Pollutants, Leaching (metallurgy), Environmental policy, Organic Chemicals, Cell Phone
الوصف: Protocols for assessing the risks of discarded electronic products (e-waste) vary across jurisdictions, complicating the tasks of manufacturers and regulators. We compared the Federal Toxicity Characteristic Leaching Procedure (TCLP), California's Waste Extraction Test (WET), and the Total Threshold Limit Concentration (TTLC) on 34 phones to evaluate the consistency of hazardous waste classification. Our sample exceeded TCLP criteria only for lead (average 87.4 mg L(-1); range = 38.2-147.0 mg L(-1); regulatory limit = 5.0 mg L(-1), but failed TTLC for five metals: copper (average 203 g kg(-1); range = 186-224 g kg(-1); limit = 2.50 g kg(-1), nickel (9.25 g kg(-1); range = 6.34-11.20 g kg(-1); limit = 2.00 g kg(-1)), lead (10.14 g kg(-1); range = 8.2211.60 g kg(-1); limit = 1.00 g kg-1), antimony (1.02 g kg(-1); range = 0.86-1.29 g kg(-1); limit = 0.50 g kg(-1)), and zinc (11.01 g kg(-1); range = 8.82-12.80 g kg(-1); limit = 5.00 g kg(-1). Thresholds were not exceeded for WET. We detected several organic compounds, but at concentrations below standards. Brominated flame retardants were absent. These results improve existing environmental databases for e-waste and highlight the need to review regulatory testing for hazardous waste.
تدمد: 0013-936X
URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4609506fb251617a9463d8fddf1faef2
https://pubmed.ncbi.nlm.nih.gov/17632903
رقم الانضمام: edsair.doi.dedup.....4609506fb251617a9463d8fddf1faef2
قاعدة البيانات: OpenAIRE