Determination of aluminum in fat emulsion injection by ICP-AES and ICP-MS
Objective:To establish ICP-AES and ICP-MS methods for determination of aluminum impurities in fat emulsion injection and compare the difference between the two methods.Methods:Compare the linearity,accura-cy,repeatability,detection limit,quantification limit and sample determination results of the two methods by meth-odological verification and determination.Results:The linearity range of two methods were 5-200 μg·L-1,the correlation coefficients were greater than 0.999,the average recovery were 103.0%,106.7%,103.2%(n=9)and 99.8%,106.5%,100.8%(n=9),The RSD of reproducibility both were 2.0%,the detection limit of two methods were 1.22 and 0.36 μg·L-1.The quantification limit of two methods were 4.07 and 1.20 μg·L-1.The contents of aluminum impurities in 8 batches of fat emulsion injection were basically the same.Conclusion:The two methods were convenient,sensitive,accurate and good repeatability,which can be used for the determination of aluminum impurities in fat emulsion injection.
ICP-MSICP-MSfat emulsion injectionaluminumdetermination of contentcomparative analysis