Park, YM Pyo, H Park, SJ Park, SK 2024-01-21T04:34:09Z 2024-01-21T04:34:09Z 2021-09-03 2005-08-29 0003-2670 https://pubs.kist.re.kr/handle/201004/136207 A convenient and simple method for the analysis of 1,4-dioxane in water was developed by liquid-liquid extraction combined with gas chromatography/mass spectrometry and applied to the water samples in Korea. Evaluation of the liquid-liquid extraction method was demonstrated by comparing with two extraction methods, which were solid-phase extraction and purge and trap method. They were referred to the standard methods for the examination of water in Japan and U.S. EPA methods. Liquid-liquid extraction was conducted by using methylene chloride and sodium chloride. This method was combined with gas chromatography/mass spectrometry. Recoveries showed in the range from 86 to 102% with relative standard deviation of 3.0 to 5.2%. The correlation coefficient of the linear regression curve was above 0.99 and method detection limit of 1,4-dioxane was 0.2 ng mL(-1) for 20 mL of water sample. The precision and accuracy were obtained within error rate of 9%. 1,4-Dioxane was detected in the treated water and raw water near Nakdong River from 0 to 240.0 ng mL(-1). It has surveyed constantly with the national problem in Korea. The developed method may be suitable to analyze and observe 1,4-dioxane regularly. (c) 2005 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV SOLID-PHASE EXTRACTION CHROMATOGRAPHIC METHOD Development of the analytical method for 1,4-dioxane in water by liquid-liquid extraction Article 10.1016/j.aca.2005.05.057 1 ANALYTICA CHIMICA ACTA, v.548, no.1-2, pp.109 - 115 ANALYTICA CHIMICA ACTA 548 1-2 109 115 scie scopus 000231335600015 2-s2.0-23644450912 Chemistry, Analytical Chemistry Article SOLID-PHASE EXTRACTION CHROMATOGRAPHIC METHOD 1.4-Dioxane water liquid-liquid extraction solid-phase extraction purge and trap method