Determination of 5 Oxides in Food Packaging Glass by Atomic Absorption Spectrometry
Objective:To establish a method for determining the content of five oxides,namely iron trioxide,calcium oxide,magnesium oxide,potassium oxide,and sodium oxide,in food packaging glass by atomic absorption spectroscopy.Method:The sample was moistened with water,dissolved with acid,diluted with water and hydrochloric acid after cooling,fixed volume,shaken,and tested by atomic absorption spectrophotometer.Result:The linear relationship of the five oxides was good,with correlation coefficients greater than 0.999,relative standard deviation of 0.31%to 5.60%,and recovery rates of 91.0%to 98.8%.Conclusion:This method is simple to operate,has high accuracy and good precision,and is suitable for batch detection of 5 types of oxide content in food packaging glass.
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