| Summary: | 碩士 === 國立中興大學 === 化學系 === 89 === Determination of aniline and 2-chloroaniline in polymer industrial wastewater and organic acids in fermentation products of milk are examined with high performance liquid chromatography on-lined micro-dialysis. The optimum conditions for obtaining dialysis efficiency such as flow-rate and polarity modifier in perfusion stream, pH and added-salt in sample solution, as well as chromatographic conditions were investigated.
Experimental results indicated that the aniline and 2-chloroaniline are well separated in an acceptable time on a reversed-phase C-18 column eluted with 40% aqueous methanol solution at pH 7.0 and 1.0 ml/min flow-rate. The organic acids (citric acid, lactic acid, acetic acid, and formic acid) can be well separated with water at pH 2.9 and 0.6 ml/min flow-rate. The proposed method provided a very simple procedure to determine aniline and 2-chloroaniline in wastewater and organic acids in fermentation products of milk. Application was illustrated by the analysis of aniline and 2-chloroaninine in wastewater released from a polymer factory and organic acids in two fermentation products.
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