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课程，就是英国本土的高中课程。具有引进时间早、“能偏科”、“重刷题”的特点，是很多留学生的首选。 不过A-Level多达70多门课程，主要分为： 1.核心基础课程：主要有数学、物理、化学、生物、地理; 2.核心...
在众多家长学生眼里，A-Level申英国，AP申美国，八竿子打不着。 好吧，说个留学过期冷知识：A-Level，IB，AP都可以英美同申。而且A-Level可以在部分美国大学换分~ 事实上，A-Level课程的作用非常大，在美国和AP课...
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...
