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Kjeldahl nitrogen analysis instrument the size of the blank value
Pubdate：2011-11-08 Click：1141
Kjeldahl nitrogen analysis instrument the size of the blank value
With the Kjeldahl method of measuring the size of the sample in nitrogen content or protein content, the first to measure the blank value for the Kjeldahl principle, in theory, the size of the blank value has no effect on the results, since the final content of the sample deducting the blank value, but in the actual analysis process, any measurements are erroneous, the error blank titration volume titration and sample volume are substituted into the formula, if a blank titration volume is large, the error will blank larger, the calculated result will be larger. Control blank titration volume size can help to improve the accuracy of analysis results, this paper analyzes the causes and the adjustment method produces.