Polyamide is a sorbent made from the polymer nylon. As the name implies, it has amide linkages throughout the structure, allowing excellent hydrogen bonding to occur on the surface. It has found use in the separation of alkaloids, amino acid derivatives, anilines, antioxidants, catecholamines, dyes, indoles, lactones, nucleotides, -sides, -bases, pesticides, phenols, steroids, sugars, sulfonamides, thiamines or any organic structures with OH or COOH or CHO groups. The mobile phases used on such a layer are as varied as they are for silica gel. For instance, hexane-diethyl ether-acetic acid (1 : 1 : 0.1) has been used for barbiturate separations, benzene-ethyl acetate-formic acid (5:10:2) has been used for artificial sweetener separations, and water-95% ethanol (6 : 4) has been used for sulfonamide separations. There are a few references to its use (see Further Reading).

Solar Panel Basics

Solar Panel Basics

Global warming is a huge problem which will significantly affect every country in the world. Many people all over the world are trying to do whatever they can to help combat the effects of global warming. One of the ways that people can fight global warming is to reduce their dependence on non-renewable energy sources like oil and petroleum based products.

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