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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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对甲苯磺酸掺杂聚吡咯/尼龙6纳米纤维膜作为碱性橙Ⅱ固相萃取介质的研究
DOI: 10.11895/j.issn.0253-3820.150502, PP. 1594-1599
Keywords: 纳米纤维膜,聚吡咯,碱性橙Ⅱ,吸附,固相萃取
Abstract:
通过静电纺丝法和氧化聚合法制备了对甲苯磺酸根离子掺杂的聚吡咯/尼龙6纳米纤维(PTS-PPy/PA6NFs)膜,通过静态和动态吸附实验考察其对碱性橙Ⅱ吸附性能,探讨其作为固相萃取(Solidphaseextraction,SPE)介质的可行性。结果表明,在25℃,溶液pH=9时,PTS-PPy/PA6NFs膜对碱性橙Ⅱ的静态吸附容量可达372.2mg/g,吸附动力学和吸附等温线分别符合准二级动力学模型和Freundlich模型;吸附热力学结果表明,吸附是一个自发进行的吸热过程;在最佳动态吸附条件下,0.1μg/mL碱性橙Ⅱ样品溶液以3.0mL/min的流速通过时,仅2.5mgPTS-PPy/PA6NFs膜就能实现高效萃取,且能重复使用7次。依此建立了基于PTS-PPy/PA6NFs膜的SPE法,结合高效液相色谱-二极管阵列检测(HPLC-DAD)印染废水中的碱性橙Ⅱ时,6批样品均被检出含有碱性橙Ⅱ,10ng/mL加标水平的平均加标回收率为95.6%~119.7%,相对标准偏差(RSD)为4.9%~12.5%(n=3)。
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