Comparison of ICP-MS and ICP-OES for determination of aluminum in vaccine
Objective:To compare the test methods for aluminum content determination in vaccines by inductively coupled plasma-mass spectrometry(ICP-MS),inductively coupled plasma optical emission spectrometry(ICP-OES)and titration of the Chinese Pharmacopoeia 2020.Methods:The pre-treatment procedures,linearity,repeatability,accuracy,quantification limit,detection limit and sample determination results of the three methods were compared and analyzed by methodological verification and sample testing.Results:There was a good linear relationship of ICP-OES in the concentration range of 1-20µg·mL-1 aluminum content,r=0.9999.Aluminum content in 6 types of vaccines was in the range of 99％-104.6％,and RSDs were lower than 3％(n=9).There was a good linear relationship of ICP-MS in the concentration range of 2.5-80ng·mL-1(r=0.999).Aluminum content in 6 types of vaccines were in the range of 99.4％-108.9％,and RSDs were lower than 8％(n=9).There was no significant difference between the three methods in the determination of aluminum content in vaccines,and RSDs were lower than 10％.Conclusion:Both ICP-MS and ICP-OES methods can be used for the determination of alu-minum content in aluminum adjuvant vaccine.Both detection methods are simple,fast and accurate.ICP-OES has lower instrument costs and is easier to promote in the laboratory.
万方数据
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