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From Cellbe
You are able to not go one day without putting your life in the hands of something made of metal. Whether it is the bridge you have to cross every single day on the method to work, the steel girders holding the roof above your head, or the parts holding your vehicle together, metal is an integral part of the present day world, and it is of utmost importance that it is of the highest standard.
As well as the lifesaving aspect, what about the aesthetic part of metal use? use? How can you know that the 22 Carat ring you just bought is really of such a good quality, and perhaps not just a dud?
This is where chemical testing is available in. Chemical tests can be used to assess the purity of a metal, permitting determination of the strength of a bridge, or the quality of jewellery. Two types of chemical testing are discussed in this essay: the salt spray test, and ICP analysis.
The Salt Spray Test is used to examine specially coated metals for his or her corrosion resistance. It is a form of accelerated corrosion used to predict how suitable a certain coating will be at preventing corrosion. The material in question is sprayed with salt, and the time taken for oxides to seem on the surface of the metal is recorded; the more corrosion resistant the material the longer it may need for oxides to seem. This test is quick and easy to do but is not totally accurate, as corrosion is just a complex process involving many interfering factors. Nevertheless this technique is normally used in business to produce an estimate of a specific substance's expected corrosion resistance as time passes.
Inductively Coupled Plasma Mass Spectrometry (or ICP analysis) is an approach used to determine the concentrations of chemical elements in an example. This strategy provides you with a notion of the purity of your stuff, as well as an indicator of which contaminants may possibly be present. It works by ionising the material in question by use of inductively coupled plasma, generated by powerful magnets, and then using mass spectrometry to analyse the substances present. [ StarsWithStripes.Org :: Technology for Democracy]
