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首页> 外文期刊>Journal of Volcanology and Geothermal Research >Volcanic ash-leachates: a review and recommendations for sampling methods
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Volcanic ash-leachates: a review and recommendations for sampling methods

机译：火山灰渗滤液：采样方法的回顾和建议

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Tephra in plumes can scavenge and thereby rapidly deposit volatiles including sulphur, halogen and metal species. These may then be leached (e.g. by rainfall), potentially releasing heavy loadings to soils and water bodies. Several eruptions have resulted in contamination of pasture, sometimes with serious impacts on livestock. Water quality has also been an issue in some areas affected by tephra fall. This work synthesises the literature on volcanic ash-leachates and considers the controls on volatile adsorption. General trends emerge for basaltic, intermediate and silicic tephra, as well as for variable particle size and transport distance. The applications of ash-leachate data to plume-gas geochemistry, calculation of volatile budgets and environmental impact assessment are evaluated. Comparisons for different eruptions are hampered by disparities in leachate analysis techniques. A standardised methodology is therefore proposed to facilitate future health impact assessment and volcanological interpretation of results from different sites.
机译：羽状中的特菲拉可以清除并迅速沉积挥发物，包括硫，卤素和金属物质。然后可以将其浸出（例如通过降雨），可能将重的负荷释放到土壤和水体上。几次喷发导致牧场受到污染，有时会对牲畜造成严重影响。在受特非拉瀑布影响的某些地区，水质也是一个问题。这项工作综合了有关火山灰沥滤液的文献，并考虑了对挥发性吸附的控制。玄武岩，中级和硅质特非拉的一般趋势出现，并且颗粒大小和运输距离也有所变化。评估了灰分渗滤液数据在烟气地球化学，挥发性预算计算和环境影响评估中的应用。渗滤液分析技术之间的差异阻碍了对不同喷发的比较。因此，提出了一种标准化的方法，以促进未来的健康影响评估和火山学对不同地点结果的解释。

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