| Abstract |
| Minute quantities of boron less than other added elements are able to improve various mechanical properties. To know the effect of boron on the properties of steel, it is necessary to accurately and precisely analyze it. It is easy to analyze boron in final products like thick plates and automotive steel sheets by OES, but it is impossible to analyze it in a sample like the ferro-alloy. An accurate analysis is also very difficult by ICP-OES because there is a matrix disturbance by the Fe element in the sample. In this work, instead of the existing specific procedures that are time-consuming for a matrix separation, we wanted to develop a quick and accurate method for analyzing boron by ICP-OES with the standard addition method. Three samples in this work, NCS HC 17204, NCS HC 23204 and JSS 174-7, were selected and used according to the boron content. When all the samples were analyzed using a wavelength of 182.583 nm of ICP-OES, we found that the analytic values corresponded to the certified values of CRM as follows. The certified value of NCS HC 17204 is 0.0042% and the analytic value was 0.0043%. The certified value of NCS HC 23204 is 0.0053% and the analytic value was 0.0052%. The certified value of JSS 174-7 is 0.0076% and the analytic value was 0.0080%. (Received January 15, 2014) |
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| Key Words |
| metals, determination of boron, standard addition method, ICP-OES, ferro-alloy |
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