A three-phase hollow-fiber liquid phase microextraction for o-phenylphenol (OPP) determination was developed. 1-octanol was employed as the organic phase, impregnated within the pores of the hollow fiber wall which was immersed in the sample solution, serving as a donor phase. OPP in the sample solution was extracted via octanol in the fiber pores into NaOH, which acted as the acceptor phase in the lumen of the fiber. The extracted OPP was then subjected to spectrophotometric detection at 712 nm using the indophenol blue reaction. The developed method showed a linear calibration curve (0.002–0.040 mg L−1) with high sensitivity (5.75 L mg−1), low limit of detection (0.31 μg L−1), and high recovery (73.6–94.8 %). Intra-day and inter-day precision at 2.1 μg L−1 OPP were 7.4 % (n = 12) and 10.9 % (n = 4) relative standard deviations, respectively. The determined OPP in various canned drinks was found to be between 2.0 and 17.8 μg L−1 using the developed method.

中文翻译：

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使用三相中空纤维液相微萃取分光光度法测定罐装饮料中的邻苯基苯酚


开发了一种用于邻苯酚 （OPP） 测定的三相中空纤维液相微萃取。采用 1-辛醇作为有机相，浸渍在浸入样品溶液中的中空纤维壁的孔中，用作供体相。样品溶液中的 OPP 通过纤维孔中的辛醇提取到 NaOH 中，NaOH 在纤维腔中充当受体相。然后使用吲哚酚蓝反应在 712 nm 处对提取的 OPP 进行分光光度检测。开发的方法显示出线性校准曲线 （0.002–0.040 mg L-1），具有高灵敏度 （5.75 L mg-1）、检测低限 （0.31 μg L-1） 和高回收率 （73.6-94.8%）。2.1 μg L-1 OPP 的日内和日间精密度分别为 7.4 % （n = 12） 和 10.9 % （n = 4） 相对标准差。使用开发的方法发现，在各种罐装饮料中测定的 OPP 在 2.0 至 17.8 μg L-1 之间。