Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s10653-016-9793-5 |
Active and legacy mining in an arid urban environment: challenges and perspectives for Copiapo, Northern Chile | |
Carkovic, Athena B.1,2; Calcagni, Magdalena S.1,2; Vega, Alejandra S.1,2; Coquery, Marina2,3; Moya, Pablo M.1,2; Bonilla, Carlos A.1,2; Pasten, Pablo A.1,2 | |
通讯作者 | Pasten, Pablo A. |
会议名称 | Urban Soils and Metal Contamination - Issues-Remedies Conference |
会议日期 | MAR 30-APR 01, 2015 |
会议地点 | Arlington, TX |
英文摘要 | Urban expansion in areas of active and legacy mining imposes a sustainability challenge, especially in arid environments where cities compete for resources with agriculture and industry. The city of Copiapo, with 150,000 inhabitants in the Atacama Desert, reflects this challenge. More than 30 abandoned tailings from legacy mining are scattered throughout its urban and peri-urban area, which include an active copper smelter. Despite the public concern generated by the mining-related pollution, no geochemical information is currently available for Copiapo, particularly for metal concentration in environmental solid phases. A geochemical screening of soils (n = 42), street dusts (n = 71) and tailings (n = 68) was conducted in November 2014 and April 2015. Organic matter, pH and elemental composition measurements were taken. Notably, copper in soils (60-2120 mg/kg) and street dusts (110-10,200 mg/kg) consistently exceeded international guidelines for residential and industrial use, while a lower proportion of samples exceeded international guidelines for arsenic, zinc and lead. Metal enrichment occurred in residential, industrial and agricultural areas near tailings and the copper smelter. This first screening of metal contamination sets the basis for future risk assessments toward defining knowledge-based policies and urban planning. Challenges include developing: (1) adequate intervention guideline values; (2) appropriate geochemical background levels for key metals; (3) urban planning that considers contaminated areas; (4) cost-effective control strategies for abandoned tailings in water-scarce areas; and (5) scenarios and technologies for tailings reprocessing. Assessing urban geochemical risks is a critical endeavor for areas where extreme events triggered by climate change are likely, as the mud flooding that impacted Copiapo in late March 2015. |
英文关键词 | Urban geochemistry Risk assessment Mining tailings Heavy metals Street dust Soils |
来源出版物 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH |
ISSN | 0269-4042 |
EISSN | 1573-2983 |
出版年 | 2016 |
卷号 | 38 |
期号 | 4 |
页码 | 1001-1014 |
出版者 | SPRINGER |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Chile;France |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000380269100006 |
WOS关键词 | HEAVY-METALS ; STREET DUSTS ; SOILS ; LEAD ; MINE ; CITY ; GEOCHEMISTRY ; PATTERNS ; TOPSOILS ; CADMIUM |
WOS类目 | Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources |
WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/305786 |
作者单位 | 1.Pontificia Univ Catolica Chile, Dept Ingn Hidraul & Ambiental, Ave Vicuna Mackenna 4860, Santiago, Chile; 2.Ctr Desarrollo Urbano Sustentable CEDEUS, El Comendador 1916, Santiago, Chile; 3.UR MALY, Irstea, 5 Rue Doua, Villeurbanne, France |
推荐引用方式 GB/T 7714 | Carkovic, Athena B.,Calcagni, Magdalena S.,Vega, Alejandra S.,et al. Active and legacy mining in an arid urban environment: challenges and perspectives for Copiapo, Northern Chile[C]:SPRINGER,2016:1001-1014. |
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