| Abstract |
| This study was carried out to develop UV/Vis Spectrophotometer method for quantitation of formaldehyde in drinking water . The detection was performed at the wavelength 425 nm by using 2,4-pentanedione(acetylacetone). In the direct method, the correlation coefficient of absorbance versus concentration was 0.9999. The precision of this method showed the relative standard deviations of 0.9~5.9 %. The limit of detection(LOD) and quantitation(LOQ) was 62 ㎍/L and 190 ㎍/L, respectively. The recovery ratios were 97.3~103.3 % at the range above LOQ. In the solid phase extraction method using AutoTrace SPE Workstation to automate sample pretreatment, the correlation coefficient of absorbance versus concentration was 0.99. The precision of this method showed the relative standard deviations of 1.9~11.0 %. The of detection(LOD) and quantitation(LOQ) was 2.6 ㎍/L and 7.9 ㎍/L, respectively. According to correlation, recovery ratio, and precision studies, this acetylacetone method was shown to be quantitative to formaldehyde, rapidly and accurately. It is considered that in water supplies or water treatment process, formaldehyde can be easily analyzed by using UV/Vis spectrophotometer belonging to the water purification plant. |
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| Key Words |
| formaldehyde, acetylacetone, UV, Vis Spectrophotometer |
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