Chromatographic efficiency of polar capillary columns applied for the analysis of fatty acid methyl esters by gas chromatography

Waktola Habtewold D.; Mj?s Svein A.

摘要

Abstract >The chromatographic efficiency that could be achieved in temperature‐programmed gas chromatography was compared for four capillary columns that are typically applied for analysis of fatty acid methyl esters (FAME). Three different carrier gases, hydrogen, helium and nitrogen, were applied. For each experiment, the carrier gas velocities and the temperature rates were varied with a full 9 × 3 design, with nine levels on the carrier gas velocity and temperature rates of 1, 2 or 3°C/min. Response surface methodology was used to create models of chromatographic efficiency as a function of temperature rate and carrier gas velocity. The chromatographic efficiency was defined as the inverse of peak widths measured in retention index units. The final results were standardized so that the efficiencies that could be achieved within a certain time frame, defined by the retention time of the last compound in the chromatogram, could be compared. The results show that there were clear differences in the efficiencies that could be achieved with the different columns and that the efficiency decreased with increasing polarity of the stationary phase. The differences can be explained by higher resistance to mass transfer in the stationary phase in the most polar columns. </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”>抽象</标题> >在温度编程的气相色谱中可以实现的色谱效率，得到四个毛细管柱通常用于分析脂肪酸甲酯（FAME）。施加三种不同的载气，氢气，氦气和氮气。对于每个实验，载气速度和温度率随满9×3设计而变化，载气速度九个水平，温度率为1,2或3℃/ min。响应面方法用于以温度和载气速度的函数创造色谱效率的模型。色谱效率定义为在保持指数单元中测量的峰宽的逆。可以进行标准化最终结果，使得可以比较由色谱图中最后一种化合物的保留时间定义的一定时间框架内可以实现的效率。结果表明，用不同柱可以实现的效率存在明显的差异，并且随着静止阶段的极性，效率降低了效率。差异可以通过最偏光柱中的固定相中的稳定性转移较高的抗性来解释。</ 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7期</span><b style="margin: 0 2px;">|</b><span>共11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=Waktola Habtewold D.&option=202" target="_blank" rel="nofollow">Waktola Habtewold D.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mj?s Svein A.&option=202" target="_blank" rel="nofollow">Mj?s Svein A.;</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>Department of ChemistryUniversity of BergenBergen Norway;</p> <p>Department of ChemistryUniversity of BergenBergen Norway;</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=chromatographic efficiency&option=203" rel="nofollow">chromatographic efficiency;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=experimental design&option=203" rel="nofollow">experimental design;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=fatty acid methyl esters&option=203" rel="nofollow">fatty acid methyl esters;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=response surface methodology&option=203" rel="nofollow">response surface methodology;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=temperature‐programmed gas chromatography&option=203" rel="nofollow">temperature‐programmed gas chromatography;</a> </p> <div class="translation"> 机译：色谱效率;实验设计;脂肪酸甲酯;响应面法;温度编程气相色谱; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" 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translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：在线耦合的液相和气相色谱系统，接口毛细管插入一对毛细管色谱柱之间 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130461132200.html">On-line coupled liquid and gas chromatography system with an interface capillary tube interposed between a pair of capillary chromatographic columns</a> <b>[P]</b> . <span> 外国专利：  US5236593A </span> <span> . 1993-08-17</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：在线耦合的液相和气相色谱系统，接口毛细管插入一对毛细管色谱柱之间 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130467398840.html">ON-LINE COUPLED LIQUID AND GAS CHROMATOGRAPHY SYSTEM WITH AN INTERFACE CAPILLARY TUBE INTERPOSED BETWEEN A PAIR OF CAPILLARY CHROMATOGRAPHIC COLUMNS</a> <b>[P]</b> . <span> 外国专利：  CA1256714A </span> <span> . 1989-07-04</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：一对毛细管色谱柱之间插有界面毛细管的在线液相色谱和气相色谱系统 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704025847208','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" style="display: none"> <div class="journal-sub"> <h2>期刊订阅</h2> <img src="https://cdn.zhangqiaokeyan.com/img/loginclose.png" alt="关闭" 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