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1)  predistilled colorimetric analysis
蒸馏比色分析法
2)  distillation and colour comparison
蒸馏比色
3)  analytical distillation
分析蒸馏
4)  distillation chromatography
蒸馏-色谱法
1.
In view of the problems that exist in the methods determining the naphthalene content in coal tar,analysis and research of the determination method have been repeatedly carried out in the hope to improve it,and a distillation chromatography method has finally been developed.
针对目前煤焦油中萘含量测试方法存在的问题,进行了分析研究,并对常用的测定方法进行了改进,开发了蒸馏-色谱法。
5)  distillation analyzer
蒸馏分析仪
6)  molecular distillation
分子蒸馏法
1.
METHODS The volatile oil was extracted and separatedfrom Elsholtzia rugulosa by supercritical CO_2fluid-molecular distillation,and the chemical components were determined by GC-MS analysis.
方法:通过超临界流体二氧化碳萃取-分子蒸馏法提取和分离香芝麻蒿挥发油,并运用GC-MS法分析鉴定其化学成分。
2.
To supply a reliable base for commercial process,the pilot test process conditions of the α-ethyl linolenate,which was purified by way of ethyl esterification and molecular distillation,had been discussed.
研究确定了乙酯化及分子蒸馏法提纯α-亚麻酸乙酯中试的工艺条件等,以期为其工业化生产提供可靠的依据。
补充资料:比色分析
分子式:
分子量:
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性质:光学分析的一种。利用光线分别透过有色的标准溶液(或玻片)和被测物质溶液而比透过光线的强度以测定被测物质含时的方法。比重量分析和容量分析简单迅速,样品取用量少,并有一定的准确度。工业上应用很广,可用于测定许多元素和有机物质以及某些气体等。如测定锰、磷、硅等元素和染料等有机物质。

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