三相中空纤维液相微萃取-离子色谱法测定环境水中苯酚含量

IC Determination of Phenol in Environmental Water with Hollow Fibrous-Three Phase Liquid Phase Micro-extraction

提出了离子色谱法测定环境水中苯酚含量的方法。样品采用三相中空纤维液相微萃取法萃取,以正辛醇为萃取溶剂,在600 r·min^(-1)转速下萃取40 min。经SH-2 Anion色谱柱分离,以12 mmol·L^(-1)氢氧化钠溶液为淋洗液洗脱。苯酚的质量浓度在1.00～500μg·L^(-1)范围内呈线性,方法的检出限(3S/N)为0.8μg·L^(-1)。方法用于地表水中苯酚的测定,加标回收率在90.1%～109%之间。

IC was used in the determination of phenol in environmental water. The sample was extracted by hollow fibrous membranes-three phase liquid phase micro-extraction with n-oetyl alcohol as extraction solvent. The extraction was carried out under magnetic stirring for 40 min at the rate of 600 r · min^-1. The SH-2 Anion column was used for separation, and 12 mmol · L^- 1 NaOH solutions was used as eluent. Linearity range of phenol was found between 1.00--500 μg ·L^- 1, with detection limits （3S/N） of 0. 8μg ·L^- 1 The proposed method was applied to the determination of phenol in surface water, values of recovery found by standard addition method were in the range of 91.0%--109%.