Washing procedure for mixed‐bed ion exchange resin decontamination for in situ nutrient adsorption
Washing procedure for mixed‐bed ion exchange resin decontamination for in situ nutrient adsorption
复制标题
原位营养物吸附混床离子交换树脂去污洗涤程序
DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
A. Munson
中科院分区：
文献类型：
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作者：
N. Thiffault;R. Jobidon;Carol De Blois;A. Munson
摘要 混床阳离子+阴离子交换树脂袋经常用于评估森林土壤中的原位养分有效性，并已证明其可用于比较与处理相关的不同干扰的影响。它们通常被安装在有机或矿物土壤层中一段时间，然后回收和提取，以了解该时期养分的可用性。为了使该方法有效，在安装到土壤中之前，树脂的离子交换位点必须清除任何污染物。开发并描述了混合床树脂原位掩埋之前进行的清洗程序。 IONAC NM-60 H+/OH- 树脂连续用 2 N NaCl、去离子水和 0.1 N NaOH 洗涤。最后，用去离子水冲洗树脂，并潮湿和寒冷地储存，直到袋子准备好并埋入土壤中。
Abstract Mixed‐bed cation + anion exchange resin bags are frequently used to assess in situ nutrient availability in forest soils, and have demonstrated their utility for comparing the impacts of different disturbances associated with treatments. They are generally installed in organic or mineral soil horizons for a certain time period, then recovered and extracted, to inform about nutrient availability during that period. For the method to be effective, the ion exchange sites of resins must be clear from any contaminants prior to installation in the soil. A washing procedure to be conducted before in situ burial of mixed‐bed resins was developed and is described. The IONAC NM‐60 H+/OH‐ resins are consecutively washed with 2 N NaCl, deionized water, and 0.1 N NaOH. Finally, resins are rinsed with deionized water and stored moist and cold until bag preparation and burial in the soil.