Objective:To establish a determination method for sodium hyaluronate injection.Methods:Sodium hyaluronate was specifically hydrolyzed by hyaluronidase,and the optimal enzymolysis conditions were enzymolysis at 37 ℃ for 4 h at 100 IU·mg-1 of enzyme reaction concentration.The analysis was performed on a of Shodex sug-ar SH1011 column(300 mm ×8 mm,6 μm)with a mobile phase of 1％H3PO4 at a flow rate of 0.6 mL·min-1.The eluent was detected at 230 nm.Results:Linear ranges were 101.38-1 013.76 µg·mL-1(r=0.999 5),RSDs of precision,stability and repeatability tests were lower than 1％,and average recovery was 100.4％,RSD=2.0％(n=9).The RAD of determination results of this method and colorimetric was 0.1％-1.2％.Conclusions:The method is accurate and reproducible,and can be used for the determination of sodium hyalur-onate injection.
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