本文应用钼酸铵与甘露醇作用产生旋光性,用旋光法测定甘露醇注射液含量.实验表明,甘露醇浓度在0.20 mg/ml～7mg/ml范围内与旋光度呈良好的线性关系.回归方程a=-0.01138+0.2826C,r=0.99997,平均回收率99.56%,相对标准偏差0.28%. In this paper, ammonium molybdate and mannitol were used to produce optical activity, and the optical rotation method was used to determine the content of mannitol injection.The experiment showed that mannitol had a good linear relationship with optical rotation in the range of 0.20 mg / ml ~ 7 mg / ml. The equation a = -0.01138 + 0.2826C, r = 0.99997, the average recovery rate of 99.56%, the relative standard deviation of 0.28%.