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| Determination of Fluoride in food additives ammonium dihydrogen phosphate by Ion Chromatography Method |
| Received:October 06, 2013 Revised:October 06, 2013 |
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| DOI： |
| KeyWord:Ion Chromatography; food additives ammonium dihydrogen phosphate ; content of the fluoride |
| Author | Institution |
| Wang Na |
山东金正大生态工程股份有限公司 山东临沭 |
| Zhang Min |
山东金正大生态工程股份有限公司 山东临沭 |
| Liu Peng |
山东金正大生态工程股份有限公司 山东临沭 |
| shenxingming |
山东金正大生态工程股份有限公司 |
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| Abstract: |
| A method for the determination of fluoride in wet-process food additives ammonium dihydrogen phosphate by Ion Chromatography is studied in this paper. The results show that the impurities such as NH4 , PO43-and SO42- do not interfere with the determination of the F- under the optimal experimental conditions. The F- linear equation is y=0.09948x-0.1079, and linear correlation coefficient is 0.9999 in the range of 4μg/mL ~ 50μg/mL. The method detection limit is 0.015μg/mL and the recoveries are 96.9% to 101.6%. This method is simple, fast and has the advantage of good reproducibility. |
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