Making Your Choice

Ultimately, the choice of method will depend on several factors. Above all, fitness for purpose must be uppermost in your mind. Will the method you have selected be adequate for the decision you and/or your customer has to take when the result is available  

Once you have a clear picture in your mind as to why the analysis is being carried out and what you hope to achieve, carry out a literature survey and identify one or more methods/procedures that appear to satisfy the criteria set. Frequently, more than one technique can be used to detect the same analyte. 

What techniques are available for the determination of trace metals  

Your list should have included the following  

It is important to remember at this stage that whatever is the chemical entity to be determined, there are usually several techniques that can be used for the measurement. Your problem is to select the best approach for the job in hand. Some techniques can be quickly eliminated because the equipment is not available. However, several options may still remain. 

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Be sure to read all the statements in each group before making your choice. 

You re on one of those game shows where you getto pick a box or a curtain or some container so you can win lots of money. You make your choice and see the words One Million flashing in bright neon. You re now told that, if you can... 

There are a number of good choices, but you will not be completely satisfied with any textbook. 1 was not even completely satisfied when 1 used a textbook that I had written. You will probably choose a textbook that is compatible with your sequence of topics. There is at least one popular two-semester textbook that begins with quantum mechanics. (P) Most of the one-volume textbooks begin with thermodynamics but can accommodate different sequences. There are now physical chemistry textbooks that come in two or even four volumes, which provides for flexibility. In making your choice of textbook, you should consider clarity of presentation for the student. Because you are already familiar with die subject, this can be hard for you to judge. I once chose a textbook that seemed perfectly clear to me, but was not at all clear to the students. Next, you should consider the approach of the book. If you want to teach a more mathematically based course, you will probably decide to choose a textbook that uses this approach and not simply plan to provide supplementary information in class. 

I I Always compare. In buying any new insurance policy, compare the two that you feel provide the best protection. Only after a step-by-step comparison should you make your choice. 

Note that all choices can be made with a joystick in either port. Move the pointer to a menu item and press the fire button twice to make your choice. If you don t own a joystick, use I, J, K, and L for up, left, down, and right respectively. Press M in place of the fire button. 

Players then pick which candidate will represent their party. Five randomly chosen candidates are available. To the right of the candidate s stats is the YES/NO counter. Before making your choice, pick NO for each possibility until you have seen all five. They will cycle around again so you can make your choice. 

Check out the label Don t trust a label just because the word fresh has been written in bright, bold letters across the product, for example. Find out more about what each labeling scheme is actually regulating, and then make your choice accordingly. 

Use growers catalogs to help you make your choice. There are hundreds of varieties to choose from, with different flowering and harvesting times and distinctive flavors and textures, and some are particularly disease-resistant. 

The references are presented in separate files according to their year(s) of publication. Please use the bookmarks to make your choice ... 

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