Fechii-Gas Chromatography Mass Spectrometry ¶

Copyright © Wei MEI, MLMS™—all rights reserved. 🀤¶

Fechii Materials Demo¶

海弗麝香

麝香T

禅麝香

Agilent 7890/5975C-GC/MSD¶

气相色谱仪类型: 7890A

质谱仪类型: 5973C 通常情况下,不需要设计参数.

开机以及关机

仪器参数的设定;
分析方法的编辑;
谱库的检索;
报告的打印.

故障排查: 首先, 有两个泵, 一个在地上, 一个在仪器里面, 在仪器里面要看一下比较烫. 比较严重的故障:1. 真空泵反油, 主机器扳烧毁.

Attention

老化柱子: 分段老化。程序升温老化(最好的老化方法)。如HP-5柱，不到20min将其升温完，并反复进行数次。再升至280度，反复数次。接到质谱仪上看基线情况。270度，必须观测到基线提高。再老化到300度半小时。无论何种方式，载气必须充足。
进样口用灰色隔垫，减少隔垫流失。
GC/MS接口处必须用vesper垫圈(5062-3508). 注意安装方向(大的一端朝向质谱)。
新柱子安装时无方向性，但一旦使用过，再不要改变方向。
Pay attention to the helium tank when the pointer gets to the last one. Alarm the manager so that the helium gas can arrive on time and replace it.

保存柱子时注意将两端密封好，避免水和空气破环柱子内涂层。

You can download A Quick Guide to Agilent 7890A Gas Chromatograhphy here.

VirtualBox¶

VirtualBox Pages can be viewed here.

VirtualBox can be downloaded here.

Windows XP iso

How to install Windows XP on VirtualBox pages?.

Ubuntu.

>>> m/z 15, 29, 43, 57, 71, 85, 99 -------->  (Aliphatic hydrocarbons: 脂肪烃或链状烃) 代表物： `正庚烷 Heptane <https://pubchem.ncbi.nlm.nih.gov/compound/8900>`

>>> m/z 19, 31, 50, 69 -------->  (Perfluoro compounds: 全氟化合物) 代表物：`四氟化碳 Carbon tetrafluoride  <https://pubchem.ncbi.nlm.nih.gov/compound/6393>`

>>> m/z 30, 44, 58 ----------> (Amines: 胺类) 代表物：`尸胺 Cadaverine <https://pubchem.ncbi.nlm.nih.gov/compound/273>`

>>> m/z 31,45, 59 -----------> (Alcohols or ethers) 代表物：`alpha 松油醇 alpha-TERPINEOL <https://pubchem.ncbi.nlm.nih.gov/compound/17100>`;

代表物：`甲基叔戊基醚 Tert-Amyl methyl ether <https://pubchem.ncbi.nlm.nih.gov/compound/61247>`

>>> m/z 39, 50, 51, 52, 63, 65, 76, 77, 91 --------------> (Aromatic hydrocarbons) 代表物：`六甲基苯 Hexamethylbenzene <https://pubchem.ncbi.nlm.nih.gov/compound/6908>`

>>> m/z 41, 54, 68 ----------------> Aliphatic nitriles

>>> m/z 41, 55, 69 ----------------> Unsaturated hydrocarbons

>>> m/z 41, 69 ---------------> Methacrylates

>>> m/z 43, 58 ---------------> Methyl ketones

>>> m/z 43, 87 ---------------> Glycol diacetates

>>> m/z 44, 42 ---------------> (CH3)2N-

>>> m/z 53, 80 ---------------> Pyrrole derivatives

>>> m/z 55, 99 ---------------> Glycol diacrylates

>>> m/z 59, 72 ---------------> Amides

>>> m/z 60, 73 ---------------> Underivatized acids

>>> m/z 61, 89 ----------------> Sulfur compounds

>>> m/z 67, 81, 95 ------------> 1-Acetylenes

>>> m/z 69, 41, 86 ------------> "Segemented" fluoromethacrylates

>>> m/z 69, 77, 65 ------------> "Segemented" fluoroiodies

>>> m/z 74, 87 ------------> Methyl esters

>>> m/z 76, 42, 61 --------> (CH3)2NS-

>>> m/z 82, 67 -------> Cyclohexyl compounds

>>> m/z 83, 82, 54 -------> A cyclohexyl ring

>>> m/z 87, 43 -------> Glycol diacetates

>>> m/z 89, 61 --------> Sulfur-containing compounds

>>> m/z 86, 100, 114 ------> Diamines

>>> m/z 99, 55 -----> Glycol acrylates

>>> m/z 104, 91 -------> Alkylbenzenes

>>> m/z 104, 117 -------> Alkylbenzenes