Environmental Engineer Department, Institute of Science, Bülent Ecevit University, 67100, Zonguldak, Turkey.
Faculty of Art and Science, Chemistry Department, Yıldız Technical University, 34210, İstanbul, Turkey.
Bull Environ Contam Toxicol. 2019 Jun;102(6):848-853. doi: 10.1007/s00128-019-02618-w. Epub 2019 Apr 15.
In this study, the detection power of a gas chromatography mass spectrometer (GC-MS) for procymidone and chlorflurenol was significantly enhanced using switchable solvent liquid phase microextraction (SS-LPME) as a preconcentration tool. This was achieved by a comprehensive optimization of significant parameters to the SS-LPME method such as switchable solvent amount, concentration and amount of sodium hydroxide, pH effect and mixing effect. The optimum experimental conditions obtained were used to determine analytical figures of merit for the analytes. The limits of detection obtained were 0.44 and 2.9 ng/mL for procymidone and chlorflurenol, respectively. The optimum method was applied to water sampled from an irrigation canal and two wastewater samples. The samples were spiked at two concentrations and the percent recovery results obtained ranged between 86 and 115% for both analytes. The recovery results together with the low standard deviations recorded validated the method as accurate and precise.
在这项研究中，使用可切换溶剂液相微萃取（SS-LPME）作为预浓缩工具，显著提高了气相色谱质谱仪（GC-MS）对菌核净和三氯氟醇的检测能力。这是通过对 SS-LPME 方法的重要参数（如可切换溶剂的量、浓度和氢氧化钠的量、pH 值效应和混合效应）进行全面优化来实现的。所得到的最佳实验条件用于确定分析物的分析性能。对于菌核净和三氯氟醇，得到的检测限分别为 0.44 和 2.9ng/mL。最佳方法被应用于从灌溉渠和两个废水样本中采集的水样。在两个浓度下对样品进行了加标，两个分析物的回收率结果在 86%到 115%之间。回收率结果和记录的低标准偏差验证了该方法的准确性和精密度。
