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Rapid preparation of methyltrimethoxy‐modified magnetic mesoporous silica as an effective solid‐phase extraction adsorbent

机译：作为有效固相萃取吸附剂的甲基三甲氧基改性磁性介孔二氧化硅的快速制备

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Abstract > A time‐saving method was applied to synthesize methyltrimethoxy‐modified magnetic mesoporous silica with or without p ‐toluenesulfonic acid as the catalyst for magnetic solid‐phase extraction. The synthesized materials were systematically characterized. Results demonstrated that methyltrimethoxy modified magnetic mesoporous silica with p ‐toluenesulfonic acid as the catalyst has a relatively smaller aperture and extreme hydrophobicity (water contact angle of 135°). To evaluate the feasibility of these prepared materials as effective adsorbents, it was combined with gas chromatography and electron capture detection to determine 26 polychlorinated biphenyls in environmental water. The result revealed that methyltrimethoxy modified magnetic mesoporous silica with p ‐toluenesulfonic acid as the catalyst had the best extraction efficiency and recovery. Under the optimized extracted conditions, the proposed method showed good linearity within the concentration range of 5 to 200?ng/L with correlation coefficients of 0.9969 to 0.9999. The limits of detection and quantification based on signal‐to‐noise ratios of 3 and 10 were in the range of 0.16 to 0.91 and 0.52 to 3.0?ng/L, respectively. The polychlorinated biphenyl concentrations in environmental water samples were successfully determined using the developed method. PCB008 and PCB110 were 4.05 and 8.52?ng/L in Red‐Star lake water (Hubei Province, China), respectively. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>摘要</标题> >施加节省时间，以合成甲基三甲氧基改性的磁性介孔二氧化碳或不含< I> P </ i> - 磺酸作为磁性固相萃取催化剂。系统地表征了合成材料。结果表明，与催化剂相对较小的孔径和极端疏水性（135°的水接触角），甲基三甲氧基改性磁性介孔二氧化硅具有相对较小的孔径和极端疏水性（水接触角为135°）。为了评估这些制备的材料的可行性作为有效吸附剂，将其与气相色谱和电子捕获检测合并以确定环境水中的26个多氯联苯。结果表明，随着催化剂的甲基三甲氧基改性磁性介孔二氧化硅与催化剂的提取效率和回收率最好。在优化的提取条件下，所提出的方法在5至200μg/ L的浓度范围内显示出良好的线性度，其相关系数为0.9969至0.9999。基于3和10的信噪比的检测和定量的极限分别为0.16至0.91和0.52至3.0〜3.0°/ l。使用开发方法成功测定了环境水样中的聚氯氯联苯浓度。 PCB008和PCB110分别为4.05和8.52？NG / L分别在红星湖水（中国湖北省）。 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-35800/'>《Journal of separation science.》</a> <b style="margin: 0 2px;">|</b><span>2018年第3期</span><b style="margin: 0 2px;">|</b><span>共9页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Qin Shi‐Bin&option=202" target="_blank" rel="nofollow">Qin Shi‐Bin;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fan Yu‐Han&option=202" target="_blank" rel="nofollow">Fan Yu‐Han;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Xiao‐Shui&option=202" target="_blank" rel="nofollow">Li Xiao‐Shui;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhang Yuan&option=202" target="_blank" rel="nofollow">Zhang Yuan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Qi Shi‐Hua&option=202" target="_blank" rel="nofollow">Qi Shi‐Hua;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan China;</p> <p>State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan China;</p> <p>State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan China;</p> <p>State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan China;</p> <p>State Key Laboratory of Biogeology and Environmental GeologyChina University of GeosciencesWuhan China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/159.html" title="化学">化学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=magnetic solid‐phase extraction&option=203" rel="nofollow">magnetic solid‐phase extraction;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=methyltrimethoxysilane&option=203" rel="nofollow">methyltrimethoxysilane;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=modified magnetic mesoporous silica&option=203" rel="nofollow">modified magnetic mesoporous silica;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=polychlorinated biphenyls&option=203" rel="nofollow">polychlorinated biphenyls;</a> </p> <div class="translation"> 机译：磁性固相萃取;甲基三甲氧基硅烷;改性磁性介孔二氧化硅;多氯联苯; 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