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红外光谱对比定性分析在多步合成反应中的应用 被引量:2
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作者 李少英 关世钧 刘桂华 《辽宁化工》 CAS 1995年第6期56-58,29,共4页
本文通过实例,将常规的红外谱图解析程序和对比定性方法相结合,即在归宿谱图各个峰位的同时,比较两张谱图的共同处和不同处,分析取代基的取代和消除产生的各种效应因素,以指导合成实验的进展。
关键词 红外光谱图 对比定性分析 多步合成反应 合成
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红外对比定性分析在烟酸系列化合物制备过程中的应用
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作者 莫卫民 薛建 +1 位作者 胡宝祥 丁梨慧 《分析试验室》 CAS CSCD 北大核心 2003年第z1期224-226,共3页
红外光谱技术现在已逐渐普及为常规的测试技术.本文在烟酸系列化合物的合成过程中应用红外光谱的对比定性分析对整个反应的过程进行监测,以指导合成的进展.
关键词 烟酸系列化合物 红外光谱 对比定性分析
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Proficiency Testing in Analysis of Wine Products
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作者 Jarmila Lastincova Eubica Pospisilova Ernest Beinrohr 《Journal of Chemistry and Chemical Engineering》 2013年第8期774-778,共5页
The quality variety wines which are produced in specified regions of Slovakia are mostly watched category of wine in European Union. Quality of the measurement for appropriate parameter in wine sample is given by unce... The quality variety wines which are produced in specified regions of Slovakia are mostly watched category of wine in European Union. Quality of the measurement for appropriate parameter in wine sample is given by uncertainty. Therefore, protocol of analysis has to have an uncertainty of measurement and should be made in accredited laboratory. In Slovakia, there are six wine growing regions (Tokaj, east Slovakia region, south Slovakia region, middle Slovakia region, Nitriansky region and Little-Carpathian region) where the quality wines with protected designation of origin are produced. Central Controlling and Testing Institute in Agriculture in Bratislava is a state organization, which has an accredited laboratory for testing wine products before introduction into the market. This article presents the results of the authors' measurements in proficiency testing FAPAS (food analysis performance assessment scheme) which were organized by Central Science Laboratory in York (England) in 2011. The authors add also interlaboratory comparison in 2012 between Slovak accredited laboratories. The results show very good agreement. Quality control in the wine sector presents very important feature in the market, therefore, using certified reference materials and checking the accredited laboratories with interlaboratory comparisons is very helpful. Testing of wine in the authors' laboratory is performed by EN ISO/IEC: 17025. The results show that z-score lies not outside the range ±2 and this is a chance that the authors' results are actually acceptable. 展开更多
关键词 Wine analysis COMPARISON proficiency tests.
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