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Phytoremediation of an arsenic-contaminated site using Pteris vittata L. and Pityrogramma calomelanos var. austroamericana: a long-term study

机译:植物修复使用Pteris vittata L.和Pityrogramma calomelanos var对砷污染的部位进行修复。奥美:一项长期研究

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摘要

This field study investigated the phytoremediation potential of two arsenic (As) hyperaccumulating fern species, Pityrogramma calomelanos var. austroamericana and Pteris vittata over 27-month duration at a disused As-contaminated cattle-dip site located at Wollongbar, NSW, Australia. Fems planted in January 2009 were harvested following 10, 22 and 27 months of growth. A detailed soil sampling was undertaken in June 2009 (initial, n=42 per plot) and limited sampling in April 2011 (after 27 months, n=15 per plot) to measure total and phosphate-extractable As concentrations in soil at 0-20-, 20-40- and 40-60-cm depths. The choice of the limited number of samples was considered sufficient to estimate the changes in soil As concentration following phytoremediation based on a geostatistical model.
机译:这项野外研究调查了两种砷(As)富集蕨类植物Pityrogramma calomelanos var的植物修复潜力。在位于澳大利亚新南威尔士州伍伦巴市的一个废弃的,被As污染的牛倾倒场内,在长达27个月的时间内进行了澳大利亚和翼龙的养殖。在生长10、22和27个月后,收获了2009年1月种植的女性。在2009年6月进行了详细的土壤采样(初始,每块n = 42),在2011年4月进行了有限采样(27个月,每块n = 15),以测量0-20时土壤中总的和可提取的As浓度-,20-40-和40-60-cm的深度。有限数量的样本的选择被认为足以根据地统计模型估算植物修复后土壤As浓度的变化。

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