| Summary: | 碩士 === 國立交通大學 === 工學院產業安全與防災學程 === 105 === This study is to develop a method for the determination of ethylene glycol (EG) and diethanolamine (DEA) from stack samplings. Both EG and DEA were sampled with impingers. The EG was analyzed using a GC-FID with a higher-polarity column (HP-INNOWAX). The r value of linear regression can be as high as 0.9991. The method detection limit (MDL) was 0.187 mg/L. The accuracy was 87.4~101.9 % and the precision was 3.8 %. On the other hand, DEA was analyzed using an ion chromatograph (IC) with IonPac CS18 2 x 250 mm chromatographic column. The r value of linear regression can be as high as 0.9986. The MDL was 0.00022 mg/L. The accuracy was 102.19~98.42 % and the precision was 0.63 %.
No matter stored in a refrigerated environment or at room temperature, the EG preservation recovery was within ±15%, and that of the DEA could be maintained within ±10 %. Using ultrapure water as the sorbent, The capture efficiency of liquid EG could be as high as 90~98 %, while for DEA it was 73~95 %. In the factory stack discharge or for spike samples to simulate the sampling method, both results showed that the sampling of EG and DEA could be effectively complemented without breakthrough.
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