Kawamoto Tatsuhiko, Makihata Nobuko
Water Environment Division, Hyogo Prefectural Institute of Public Health and Environmental Sciences, 2-1-29, Arata, Hyogo, Kobe 652-0032, Japan.
Anal Sci. 2003 Dec;19(12):1605-10. doi: 10.2116/analsci.19.1605.
A simultaneous analytical method was examined for carbofuran and its derivative pesticides in water. Since carbofuran derivatives are hydrolyzed to carbofuran in water, the liquid-liquid extraction method was used to obtain an accurate concentration value. Moreover, since these compounds are easily decomposed at the GC/MS injection port, temperature programmable inlet on-column injection was used. By combining the two methods, a sensitive analytical method was established without hydrolysis and thermal decomposition. As a result of recovery experiments using distilled water, river water and tap water, acceptable recovery rates and favorable reproducibility were obtained. This method was used in a field investigation to determine carbofuran and its derivative pesticides in river water taken from three points of the Y river over a period of one year. Carbofuran, benfuracarb, and carbosulfan were detected and corresponded to the period when these pesticides were used in the area. Although benfuracarb and carbosulfan using traditional methods are believed to easily hydrolyze and thermally decompose during the analytical process, by using our method they can be detected.
研究了一种同时分析水中克百威及其衍生农药的方法。由于克百威衍生物在水中会水解为克百威，因此采用液液萃取法以获得准确的浓度值。此外，由于这些化合物在气相色谱/质谱进样口容易分解，所以采用了程序升温进样口柱上进样法。通过将这两种方法相结合，建立了一种既无水解又无热分解的灵敏分析方法。通过对蒸馏水、河水和自来水进行回收率实验，获得了可接受的回收率和良好的重现性。该方法用于一项实地调查，以测定一年内从Y河三个地点采集的河水中的克百威及其衍生农药。检测到了克百威、丙硫克百威和丁硫克百威，且与该地区使用这些农药的时期相符。尽管传统方法认为丙硫克百威和丁硫克百威在分析过程中容易水解和热分解，但使用我们的方法可以检测到它们。
