This paper mainly deals with the correlativity between Gray-king Assay coke type(GAC) and free swelling index(FSI) on the gas coal.

本文着重讨论了气煤葛金焦型与自由膨胀序数的相关关系。

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Based on gas chromatography a method was established to assay alcohols in air. The linearity, precision and accuracy were tested. It has been proven to be a simple and easy to operate analytic method.

前言： 研究了大气中低分子量醇类化合物的气相色谱测定方法，进行了线性范围、 精密度和准确度实验。

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Objective: Using the headspace Gas - chromatography methods to measure the assay of residual solvent (acetone, ethylene chloride and ethanol) in Cefazolin sodium.

目的：建立一种气相色谱法同时测定原料药头孢唑林钠中有机溶剂丙酮，二氯甲烷、乙醇残留量的方法。

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