微波消解-原子熒光光度法測定食品中的錫含量

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Determination of Tin Content in Food by Microwave Digestion - Atomic Fluorescence Spectrometry

YU Yurong， PING Zhenqi （Shangyu District Food Inspectionand Testing Center， Shaoxing City， Shaoxing 31230o， China）

Abstract： Objective： To establish a method for determining tin content in food based on microwave digestion atomic fluorescence spectrometry. Method： Microwave digestion was used to treat the sample，and nitric acid hydrogen peroxide was used as the digestion system. Atomic fluorescence spectrophotometer was used for detection under the optimal experimental conditions.Result： Tin showed a good linear relationship between 20.0～ 400.0μg?L-1 . The detection limit and quantification limit of the method were 0.07μg?L-1 and 0.24μg?L-1; respectively. The relative standard deviation of precision was 0.10% ，and the recovery rate was 95.02%～ 98.22% Actual sample testing showed that the method has good feasibility. Conclusion： Microwave digestion atomic fluorescence spectrometry is easy to operate，has high sensitivity，and accurate and reliable results，making it suitable for the determination of tin content in food.

Keywords： microwave digestion; atomic fluorescence photometer; tin; content determination

在人體必需的14種微量元素中，錫占據(jù)重要地位，尤其在抗腫瘤領(lǐng)域表現(xiàn)出積極功效。（剩余3850字）