Research Proposal on Heavy Metals
Heavy
metals is the group of chemical elements, which are characterised with the high atomic weight and density. There are more than forty explanations of the term ‘heavy metals’ and it is impossible to find the single right one. As a result the list of chemical elements will be different, because will be based on the explanation. If one focuses on the atomic weight which will be more than 50, the list of heavy metals will contain all the elements starting from Vanadium; but if one decides to use density as the main criteria which will be equal or higher than of Iron, the list of elements will include Lead, Mercury, Copper, Cadmium, Cobalt, but the less dense element Tin will not be included into the list.
There are also classifications based on the other numbers of density and atomic weight and there exceptions for the rare and noble metals.
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The term ‘heavy metals’ is more often observed not from the chemical side but from the point of view of the health care, ecology and biology. Scientists not only pay attention to the chemical and physical characteristics of the elements, but evaluate their biological activity and toxicity. The biological role of heavy metals is extremely important but controversial. On the one hand, such microelements as Iron, Copper play the important part for the biological processes essential for the normal functioning of plants, animals and human beings. On the other hand, heavy metals and their combinations can cause serious problems and diseases if they are accumulated in tissues being extremely toxic (Lead, Mercury).
The topic on heavy metals is quite interesting for the research, because enables to define the role of heavy metals for the existence of life and informs about the danger they can carry. When one is interested in the research of this topic, he will need to complete a good heavy metals research proposal, which will persuade the professor in the success of the choice of the topic. Students have to present the purpose of the research, the expected results, the methodology of the research and sources which can help to prepare a high-quality analysis on the topic.
It is obvious that the process of research proposal writing is quite troublesome and requires much energy and time. In order to succeed in the process of writing one will surely need the help of an expert. The web and a free example research proposal on heavy metals can be helpful for every student who does not know how to compose the correct paper well. On the basis of a high-quality well-formatted free sample research proposal on heavy metals it is easy to catch the main points of professional writing and prepare your own paper.
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