Fan Shun-Li, Zhao Lixia, Lin Jin-Ming
State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
Talanta. 2007 Jul 31;72(5):1618-24. doi: 10.1016/j.talanta.2007.01.034. Epub 2007 Jan 20.
In the present work, a simple method of sample preparation for the determination of polycyclic aromatic hydrocarbons (PAHs) in water rich in colloidal particulate was developed. The technique was mainly based on the effect of the flocculation of aluminum sulfate and the adsorption of the flocculation aid florisil. The method contained three steps: flocculation, ultrasonic extraction, and solid-phase extraction cleanup. Major parameters of the procedure were optimized with high performance liquid chromatography (HPLC) separation and ultraviolet-fluorescence detection. When 250 mL model sample containing 16 EPA PAHs was processed, the developed method provided detection limits in the range of 0.02-5 ng/L. Both spiked and non-spiked polluted river water samples rich in suspended particles and organic matters were analyzed. Recoveries and relative standard deviations for the 16 PAHs were in ranges of 86-94% and 3-13% (n=5), respectively.
在本研究中，开发了一种用于测定富含胶体颗粒的水中多环芳烃（PAHs）的简单样品制备方法。该技术主要基于硫酸铝的絮凝作用和助凝剂弗罗里硅土的吸附作用。该方法包括三个步骤：絮凝、超声萃取和固相萃取净化。通过高效液相色谱（HPLC）分离和紫外-荧光检测对该方法的主要参数进行了优化。当处理含有16种美国环保署（EPA）多环芳烃的250 mL模型样品时，所开发的方法的检测限在0.02-5 ng/L范围内。对添加和未添加多环芳烃的富含悬浮颗粒和有机物的污染河水样品进行了分析。16种多环芳烃的回收率和相对标准偏差分别在86-94%和3-13%（n=5）范围内。
