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The preliminary analysis has been made of the top note components of an important rose variety Miaofengsan rose, which is of production significance to the country, 22 of the identified 53 compounds in the top note have rarely been met in rose essential and/or absolute oil, That will be of advantageous to improving the investigation of perfume and essence of rose type. It is effected by appling a combined cold trapping and adsorption cumulation for collecting low concentration compounds from aqueous solution,...

The preliminary analysis has been made of the top note components of an important rose variety Miaofengsan rose, which is of production significance to the country, 22 of the identified 53 compounds in the top note have rarely been met in rose essential and/or absolute oil, That will be of advantageous to improving the investigation of perfume and essence of rose type. It is effected by appling a combined cold trapping and adsorption cumulation for collecting low concentration compounds from aqueous solution, thus provides a feasible convienent method for the wide application on the samples with rare low concentration top note.

对我国有生产意义的玫瑰花重要品种妙峰山玫瑰花的头香成份做了初步分析。鉴定了其中53种化合物,有22种是过去在玫瑰精(净)油中很少见到,这对改进玫瑰型的香料香精的研究将有一定的作用。在收集低浓度的水溶液样品时,我们采用低温收集和吸附富集联用收到较好的效果,为普遍推广对稀有的、含低浓度头香的样品收集分析提供了一种较为方便的方法。

y means of FTIR, elemental analysis, X--ray diffraction , SEM and other analytical methods, the redox mechanism of amidoxime chelate polyvinyl-- formal nonwoven fabric (Ac-- PVFF ) recating with An3+ was investigated and some valuable ideas were propose in mis paper. It can be proposed from experimental resuits that when An-- PVFF reacts with Ans+, almost amidoxime groups are oxidized to amide groups, while some are oxidized to carboxyl groups, At the same bine, the small molecular weight nitrogen--containing...

y means of FTIR, elemental analysis, X--ray diffraction , SEM and other analytical methods, the redox mechanism of amidoxime chelate polyvinyl-- formal nonwoven fabric (Ac-- PVFF ) recating with An3+ was investigated and some valuable ideas were propose in mis paper. It can be proposed from experimental resuits that when An-- PVFF reacts with Ans+, almost amidoxime groups are oxidized to amide groups, while some are oxidized to carboxyl groups, At the same bine, the small molecular weight nitrogen--containing compounds released fromthe redox processare found to be mainly nitrogen chide (NOx) As well as,H+ ion is produced in the redox process. An3+ ions are finally reduced into elemental gold in redox process although some of them may be chelated by An-- PVFF in the beggining at lower temperature. The produced gold crystallizeson Ac-- PVFF in the rose-- shaped and the mount of crystallite increase with the lengthning of redox durahon.

采用各种分析方法系统研究了含偕胺肟基因维尼无纺布与An(3+)进行氧化还原反应时的化学结构变化、氧化还原与鳌合吸附的关系以及还原产物的结晶结构和形态.结果表明,含偕胺肟基无纺布与Au(3+)反应时,开始主要是偕胺肟基被氧化成为酰胺基.此外,有部分偕胺基因被氧化成为羧基.An(3+)被还原的同时生成约相等当量的氢离子.反应后期或反应温度高时,氢离子生成量增大.实验结果还表明,在反应起始阶段,Au(3+)与偕胺肟基因会发生鳌合作用.还原生咸的单质An形成“玫瑰花”状的小晶粒粘附于无纺布纤维表面.

The paper presents how the pigment of " Ku-shui" rose is studied and determined by UV and chemical method.Its main component is cyanidin - 3 - glycosid and quercetin -glycosid . This pigment is violet-red in acid or neutral solution,green-blue in base solution. It shows certain stability at heating or lighting.

用UV和化学方法研究确定了苦水玫瑰花的色素主要成份是矢车菊-3-葡萄糖苦和辅色素树皮黄素管等。该色素在中性和弱酸性溶液中为玫瑰紫红色,弱碱性溶液中呈蓝绿色,对光和热有一定的稳定性。

 
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