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A solid-phase extraction approach for the identification of pharmaceutical–sludge adsorption mechanisms
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作者 Laurence Berthod Gary Roberts Graham A.Mills 《Journal of Pharmaceutical Analysis》 SCIE CAS 2014年第2期117-124,共8页
It is important to understand the adsorption mechanism of chemicals and active pharmaceu-tical ingredients (API) on sewage sludge since wastewater treatment plants are the last barrier before the release of these co... It is important to understand the adsorption mechanism of chemicals and active pharmaceu-tical ingredients (API) on sewage sludge since wastewater treatment plants are the last barrier before the release of these compounds to the environment. Adsorption models were developed considering mostly hydrophobic API-sludge interaction. They have poor predictive ability, especially with ionisable compounds. This work proposes a solid-phase extraction (SPE) approach to estimate rapidly the API-sludge interaction. Sludge-filled SPE cartridges could not be percolated with API spiked mobile phases so different powders were tested as SPE sludge supports. Polytetrafluoroethylene (PTFE) was selected and tested at different PTFE/sludge ratios under eight different adsorption conditions with three API ionisable compounds. The PTFE/sludge mixtures with 50% or less sludge could be used in SPE mode for API sorption studies with methanol/water liquid phases. The results gave insights into API-sludge interactions. It was found that π-π, hydrogen-bonding and charge-charge interactions were as important as hydrophobicity in the adsorption mechanism of charged APIs on sludge. 展开更多
关键词 Pharmaceuticals Sewage sludge Adsorption coefficient BINDING Solid-phase extraction polytetrafl uoroethylene
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探讨膨体聚四氟乙烯配合自体耳软骨应用于鼻整形手术的效果评价 被引量:12
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作者 付德刚 《中国继续医学教育》 2015年第18期119-120,共2页
目的探究expanded PTFE与自体耳软骨在鼻整形手术中的应用效果。方法选取2013年6月~2015年4月我院收治的29例鼻整形手术患者作为研究对象,在患者鼻小柱正中行蝶形切口,以及两侧鼻翼的软骨缘行切口,利用expanded PTFE配合自体耳软骨完成... 目的探究expanded PTFE与自体耳软骨在鼻整形手术中的应用效果。方法选取2013年6月~2015年4月我院收治的29例鼻整形手术患者作为研究对象,在患者鼻小柱正中行蝶形切口,以及两侧鼻翼的软骨缘行切口,利用expanded PTFE配合自体耳软骨完成鼻整形手术。结果本次研究中,鼻整形手术成功率100.00%;随访发现,4例产生负面反应(占比13.79%),经过有效处理,不良反应都得到控制。结论 expanded PTFE配合自体耳软骨应用于鼻整形手术具有较好的效果,能够降低术后不良反应,保持鼻部自然美观。 展开更多
关键词 膨体聚四氟乙烯 鼻整形手术 效果 自体耳软骨
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