采用分光光度法测定硝本地平的含量。测定波长为492nm。在1~20ug/ml范围内回归方程为A=0.025+0.028Cr=0.9990.平均回收率为99.76%(RSD=0.21%n=5)。方法简便、快速。
Determination of nitrate content by spectrophotometry. The measu
Based on the two-dimensional viscoelastic differential constitutive relation and the thin plate theory,the differential equations of motion of the viscoelastic