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1.
一种新型的变压器分析柱及微型转化炉,可用一根柱,一次进样完成H2、CO、CH4、CO2、C2H4、C2H6和C2H2的全分析。而研制成功的微型转化炉有较高的转化率,且寿命长,可降低仪器成本 。  相似文献   

2.
《Analytical letters》2012,45(3):189-193
Abstract

The separation of the chloroplast pigments is achieved by two-way chromatography on cellulose sheets. The chromatographic system employed is superior to any other thin-layer or paper system yet found.  相似文献   

3.
JPC – Journal of Planar Chromatography – Modern TLC - Spontaneous oscillatory chiral conversion and condensation of low-molecular-weight chiral carboxylic acids have been investigated...  相似文献   

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JPC – Journal of Planar Chromatography – Modern TLC -  相似文献   

5.
JPC – Journal of Planar Chromatography – Modern TLC - Thin-layer chromatography with microbiological detection (direct bioautography) of amphotericin B. has never been reported. The...  相似文献   

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Abstract

A convenient thin-layer chromatographic procedure that utilizes neutral solvent systems for the separation of antipyrine, aminopyrine, 4-aminoantipyrine, and 4-nitrosoantipyrine on silica gel adsorbent is reported.  相似文献   

8.
Abstract

Thin-layer chromatographic separation of metal ions has become immensely popular in analytical chemistry in view of its speed, selectivity and applicability at tracer level. Quinoline-2-aldehyde thiosemicarbazone1,2 was found to form yellow coloured chelates with metal ions such as copper, nickel, zinc, mercury, iron and lead at pH 7.5 and extract into chloroform. This, however reduces the sensitivity of the reagent as a chromogenic agent but the chromatographic run of the chelates on a thin layer of silica gel coated on glass plate increases the specificity and selectivity of the reagent. In this article we propose a method for separation of copper and mercury chelates from binary mixtures containing chelates of zinc, lead, iron and nickel. The method is applicable for analysis of synthetic mixtures and standard samples.  相似文献   

9.
JPC – Journal of Planar Chromatography – Modern TLC - Modeling of thin-layer chromatographic separation of androstane isomers to find the optimum mobile phase is described in this...  相似文献   

10.
JPC – Journal of Planar Chromatography – Modern TLC - The leaves of Hibiscus sabdariffa L. are one of the sources of food and traditional medicine. A combination of high-performance...  相似文献   

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马铃薯体内腺嘌呤代谢物的薄层色谱法乌云,李秉真,田瑞华,索兰弟,刘梦云(内蒙古农牧学院中心实验室农学系呼和浩特010018)1前言在研究马铃薯块茎的形成和细胞分裂素的变化的相互关系时,除发现有玉米素、玉米素核苷外〔1〕,还发现有6-氨基嘌呤、腺嘌呤核...  相似文献   

13.
JPC – Journal of Planar Chromatography – Modern TLC - The chromatographic behavior of four groups of s-triazine derivatives (14 compounds) has been studied by TLC on silica gel...  相似文献   

14.
蔡红  孙毓庆 《色谱》1995,13(4):279-280
利用TURBOPROLOG程序设计语言,建立了一个甾体药物薄层色谱分析数据库,收集了中国药典一九九0年版、英国药典一九八八年版及美国药典第二十二版中甾体原料药及其制剂的薄层色谱数据,为甾体药物的薄层色谱分析提供了方便。  相似文献   

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JPC – Journal of Planar Chromatography – Modern TLC - A high-performance thin-layer chromatographic method has been developed for determination of four carbamate residues in vegetables....  相似文献   

17.
JPC – Journal of Planar Chromatography – Modern TLC - A high performance thin layer chromatographic method has been developed for the determination of idebenone in pharmaceutical...  相似文献   

18.
Abstract

Thin layer chromatography of DMSO complexes of some metal ions in a large number of solvent systems was carried out. The specific separation of DMSO complex of Hg2+ from others have been achieved in ethyl acetate media. Other important separations of metal - DMSO complexes are : Ni2+ - Co2+, Ce3+ - La3+ and Zn2+ - Mn2+. Some other possible separations are also reported.  相似文献   

19.
JPC – Journal of Planar Chromatography – Modern TLC - Cypermethrin is frequently encountered in poisoning cases in India. In TLC, the compound can be detected by spraying the plate with...  相似文献   

20.
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