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首页> 外文学位 >Phytoremediation of perchlorate by native and exotic riparian phreatophytes of the Las Vegas Wash, Nevada.
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Phytoremediation of perchlorate by native and exotic riparian phreatophytes of the Las Vegas Wash, Nevada.

机译：内华达州拉斯维加斯洗地植物的原生和外来河岸藻类植物对高氯酸盐的植物修复作用。

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The potential to use native (Salix exigua) and exotic (Tamarix ramosissima) phreatophytes to remediate perchlorate from arid riparian environments was investigated by conducting a hydroponic greenhouse experiment. Salix exigua and Tamarix ramosissima exposed to ammonium perchlorate at concentrations of 10 mg L -1 and 100 mg L-1 removed 15 to 22% perchlorate mass from hydroponic solution, with 55 to 64% of removal being taken up into plant tissue. Total perchlorate taken up by plants or removed from solution was not significantly different between species on a mass or oven dry plant weight concentration basis. Significant differences in tissue specific uptake, however, were detected, with Salix exigua accumulating 78 to 87% of perchlorate in the leaf and Tamarix ramosissima exuding 84 to 87% of uptake onto leaf surfaces. Burning leaf tissue resulted in no detectable perchlorate in ash.
机译：通过进行水培温室试验，研究了使用天然（Salix exigua）和外来（Tamarix ramosissima）的藻类植物修复干旱河岸环境中高氯酸盐的潜力。暴露于高氯酸铵浓度为10 mg L -1和100 mg L-1的柳柳和柳柳（Tamarix ramosissima）从水培溶液中去除了15至22％的高氯酸盐质量，其中55至64％的去除物被吸收到植物组织中。植物的总高氯酸盐吸收量或从溶液中去除的总高氯酸盐在质量或烘箱干燥植物重量浓度的基础上在物种之间没有显着差异。然而，检测到组织特异性吸收存在显着差异，柳柳（Salix exigua）在叶片中积聚了78％至87％的高氯酸盐，而柳柳（Tamarix ramosissima）在叶片表面上积聚了84％至87％的吸收。燃烧叶子组织不会导致灰分中检测到高氯酸盐。

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