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A novel Cyphos IL 104-based polymer inclusion membrane (PIM) probe to mimic biofilm zinc accumulation.
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-25 , DOI: 10.1016/j.scitotenv.2020.136938 E Anticó 1 , C Fontàs 1 , R Vera 1 , G Mostazo 1 , V Salvadó 1 , H Guasch 2
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-01-25 , DOI: 10.1016/j.scitotenv.2020.136938 E Anticó 1 , C Fontàs 1 , R Vera 1 , G Mostazo 1 , V Salvadó 1 , H Guasch 2
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The presence of Zn in surface waters from abandoned mining zones is a critical issue since excess Zn concentrations may affect aquatic life and whole ecosystems. We present, for the first time, a simple tool based on a polymer inclusion membrane (PIM) intended to monitor Zn in river water by mimicking metal accumulation in the biofilm. The PIM-based probe contains a polymeric membrane prepared using cellulose triacetate (CTA, 50% w/w) as the base polymer, nitrophenyloctyl ether (NPOE) as the plasticizer (20% w/w), and the ionic liquid (IL) Cyphos 104 as the extractant (30% w/w). The accumulation of Zn in the acceptor phase (0.01 M HNO3) was evaluated for different free metal concentrations at 4 h accumulation time resulting in a good correlation between the free metal concentration and the accumulated one. We also found that the metal accumulated agrees with the free metal fraction upon addition of EDTA in the donor solution. The results for Zn accumulation with the PIM-based probe were found to be comparable to those obtained for a biofilm that was grown in a stream from an abandoned mine area and subsequently translocated to the laboratory and put in contact with Zn polluted stream water, so confirming the effectiveness of this new probe in mimicking Zn accumulation in the biofilm.
中文翻译：
一种新型的基于Cyphos IL 104的聚合物包含膜（PIM）探针，可模拟生物膜中锌的积累。
废弃矿区地表水中锌的存在是一个关键问题，因为过量的锌浓度可能会影响水生生物和整个生态系统。我们首次提出了一种基于聚合物包含膜（PIM）的简单工具，该工具旨在通过模仿生物膜中的金属积累来监测河水中的锌。基于PIM的探针包含使用三乙酸纤维素（CTA，50％w / w）作为基础聚合物，硝基苯基辛基醚（NPOE）作为增塑剂（20％w / w）和离子液体（IL）制备的聚合物膜Cyphos 104作为萃取剂（30％w / w）。在4h的累积时间，对不同游离金属浓度的锌在受体相（0.01 M HNO3）中的累积进行了评估，从而得出游离金属浓度与累积的金属之间的良好相关性。我们还发现，在供体溶液中添加EDTA时，积累的金属与游离金属部分一致。发现使用基于PIM的探针积累的锌的结果与在从废弃矿区的河流中生长并随后转移到实验室并与受Zn污染的溪流接触的生物膜获得的结果相当。证实了这种新探针在模拟生物膜中锌积累方面的有效性。
更新日期：2020-01-26
中文翻译：
一种新型的基于Cyphos IL 104的聚合物包含膜（PIM）探针，可模拟生物膜中锌的积累。
废弃矿区地表水中锌的存在是一个关键问题，因为过量的锌浓度可能会影响水生生物和整个生态系统。我们首次提出了一种基于聚合物包含膜（PIM）的简单工具，该工具旨在通过模仿生物膜中的金属积累来监测河水中的锌。基于PIM的探针包含使用三乙酸纤维素（CTA，50％w / w）作为基础聚合物，硝基苯基辛基醚（NPOE）作为增塑剂（20％w / w）和离子液体（IL）制备的聚合物膜Cyphos 104作为萃取剂（30％w / w）。在4h的累积时间，对不同游离金属浓度的锌在受体相（0.01 M HNO3）中的累积进行了评估，从而得出游离金属浓度与累积的金属之间的良好相关性。我们还发现，在供体溶液中添加EDTA时，积累的金属与游离金属部分一致。发现使用基于PIM的探针积累的锌的结果与在从废弃矿区的河流中生长并随后转移到实验室并与受Zn污染的溪流接触的生物膜获得的结果相当。证实了这种新探针在模拟生物膜中锌积累方面的有效性。
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