论文部分内容阅读
我国目前规定了乙酸甲酯、乙酸乙酯、乙酸丙酯、乙酸丁酯和乙酸戊酯工作场所有害因素职业接触限值时间加权浓度(TWA) 〔1〕,其测定方法主要有直接采样气相色谱法、固体吸附剂采样气相色谱法〔2～ 4〕。这些方法都使用填充色谱柱进行分离。在现场共存物较少的情况下 ,填充柱能满
Our country currently provides methyl vinyl acetate, ethyl acetate, propyl acetate, butyl acetate and amyl acetate occupational exposure limits harmful concentrations of workplace time-weighted concentration (TWA) 〔1〕, the determination of the main methods are direct sampling gas chromatography Method, solid adsorbent sample gas chromatography 〔2 ~ 4〕. These methods use packed columns for separation. In the case of less coexistence in the scene, the packed column can be full