Interpreting Chromatograms The less polar components travel further up the TLC plate Their?Rf?values are higher?than those closer to the baseline They are?more soluble?in the mobile phase an...
Gas Chromatography Gas-Liquid Chromatography (GLC) is used for analysing: Gases Volatile liquids Solids in their vapour form The stationary phase: This method uses a long coiled colum...
Column Chromatography Column Chromatography In column chromatography, the column is often a long vertical glass tube or in the laboratory a burette is suitable An inert solid (usually powder...
Thin Layer Chromatography Thin-layer chromatography (TLC) is a technique used to analyse small samples via separation For example, we could separate a dye out to determine the mixture of dye...
13C NMR Nuclear Magnetic Resonance (NMR) spectroscopy is used for analysing organic compounds Atoms with odd mass numbers usually show signals on NMR For example, isotopes of atoms Many of t...
1H NMR Features of a?1H NMR spectrum NMR spectra shows the intensity of each peak against their chemical shift The area under each peak gives information about the number of protons in a par...
A-Level課程，就是英國本土的高中課程。具有引進時間早、“能偏科”、“重刷題”的特點，是很多留學生的首選。 不過A-Level多達70多門課程，主要分為： 1.核心基礎課程：主要有數學、物理、化學、生物、地理; 2.核心...
在眾多家長學生眼里，A-Level申英國，AP申美國，八竿子打不著。 好吧，說個留學過期冷知識：A-Level，IB，AP都可以英美同申。而且A-Level可以在部分美國大學換分~ 事實上，A-Level課程的作用非常大，在美國和AP課...
Action of Anticancer Drugs In the 1960s the drug cis-platin was discovered, which has been extremely effective in treating a number of different types cancer such as testicular, ovarian, cer...
