| abstract |
A gas chromatographic method for determining residual solvents in phthalide compounds, using cyanopropylphenyl-dimethylpolysiloxane as a stationary liquid capillary column, a hydrogen flame ionization detector, and nitrogen as a carrier gas, according to external The standard method calculates the content of residual solvents based on the peak area. This method can determine n-heptane and other residual solvents in phthalide compounds, and has the advantages of high sensitivity, strong specificity, and high accuracy. |