Assessment of the environmental conditions of the Sarno river basin (south Italy): a stream sediment approach
Assessment of the environmental conditions of the Sarno river basin (south Italy): a stream sediment approach
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DOI：
10.1007/s10653-012-9483-x
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发表时间：
2013-06-01
影响因子：
4.2
通讯作者：
De Vivo, Benedetto
中科院分区：
文献类型：
--
作者：
Albanese, Stefano;Iavazzo, Pietro;De Vivo, Benedetto
萨尔诺河流域面积500公里(2)，汇集了Solofrana和Cavaiola支流的水。最初，它代表了居民捕鱼和运输货物的生计来源；目前，仍有部分用于灌溉的萨尔诺河由于工业废物不受控制的流出而受到极端环境退化的影响。在一项旨在描述坎帕尼亚地区全区特征的地球化学勘探项目框架内，在河流流域收集了89个水系沉积物样本，采样密度为每5公里1个样本(2)，并利用电感耦合等离子体质谱法对其进行了分析，以评估区域尺度上的环境条件。利用gis辅助技术，根据潜在有害元素的实际分布及其区域背景值，生成As、Cd、Cr、Cu、Hg、Pb和Zn的污染因子和污染程度图。此外，通过因子分析对河流沉积物污染源的性质和程度进行了评价。结果表明，萨尔诺河流域可划分为两个“环境状况”单元：低污染单元，对应于丘陵和山区；中度至高度污染单元，对应于人口密度高的河谷底经济发达地区。这项工作是在一个旨在通过分析环境介质（河流沉积物、水、土壤和植被）以及常住人口的头发来调查环境污染与人类健康之间关系的项目中开展的。在此背景下，还探讨了发达地区极度受损的环境条件与同一地区肝癌发病率之间的空间相关性，提出需要进行仔细的成本/效益分析，以评估可能对公众健康状况产生不利影响的环境恶化是否值得进行经济发展。
The Sarno river basin covers an area of 500 km(2) collecting the waters of Solofrana and Cavaiola tributaries. Originally it manly represents a source of livelihood for inhabitants by fishing and transporting goods; currently, the Sarno river, still partially used for irrigation, is affected by an extreme environmental degradation as a result of uncontrolled outflow of industrial waste. Within the framework of a wider geochemical prospecting project aiming at characterizing the whole territory of the Campania region, 89 stream sediment samples with a sampling density of 1 sample per 5 km(2) were collected in the river basin and analyzed by means of inductively coupled plasma-mass spectrometry in order to assess the environmental conditions at a regional scale. A GIS-aided technique, based on both the actual distribution of potentially harmful elements and their regional background values, was used to generate the maps of the contamination factors and of the contamination degrees for As, Cd, Cr, Cu, Hg, Pb and Zn. Furthermore, a factor analysis was performed to assess the nature and the extent of contamination sources for the river sediments. Results showed that the Sarno river basin could be divided in two "environmental status" units: one, low contaminated, corresponding to the hilly and mountain areas, and the second, from moderately to very highly contaminated, corresponding to the economically developed areas of the valley floor characterized by a high population density. This work was developed within a project that aims to investigate the relationships between environmental pollution and human health by analyzing environmental media (stream sediments, water, soil and vegetation) together with human hair of resident population. In this context, the spatial correlation between the extremely compromised environmental conditions of developed areas and the incidence rate of liver cancer in the same area was also explored posing the need of a careful costs/benefits analysis to assess whether the deterioration of the environment, that could adversely affect the conditions of public health, is worth the economic development.