The content of merthiolate in intramuscular immunoglobulin was determined using cold vapour atomic absorption method after its sample-had been ingested by 5%KMnO_4 and strong H_2SO_4 in the boiled water bath for 30 minutes. And the correlation coefficient was 0.9992, the average recovery was 99.7～104%, the CV rate was 0.9～3.8%. The results of experiment were accurate and reliable as compared with traditional diphenyl thiocarbazone titration, indicating that the method was simple, quick and worthy to be spread.(Original article on page12)

The quantitative determination of octanoate content in albumin product was performed by acid base titration directly after the water phase was mixed up with the ether phase using the mixture solvent solution. The three factor optimum seeking principle was used to seek the optimum concentrations and volumes of components in mixture solvent solution and the optimum conditions of extraction. The method had its recovery rate of 99. 8+0. 89%(n=6) and variation coeff-cient (CV)of 0. 89%(n= 16),indicating that the method was a precise and reliable one.