Off-line solid-phase extraction procedure for the determination of polycyclic aromatic hydrocarbons from aqueous matrices
Off-line solid-phase extraction procedure for the determination of polycyclic aromatic hydrocarbons from aqueous matrices
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DOI：
10.1007/s13762-013-0229-9
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发表时间：
2013-03
影响因子：
3.1
通讯作者：
I. Limam;M. R. Driss
中科院分区：
文献类型：
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作者：
I. Limam;M. R. Driss
本文描述了一种离线固相萃取-紫外检测高效液相色谱法测定水基质中16种重点多环芳烃污染物的方法。确定萃取效率的不同方面，如填料类型（磁盘或墨盒），洗脱溶剂和添加有机改性剂的样品进行了评估。乙腈洗脱回收率最高。用乙腈冲洗样品瓶，并将冲洗液与样品萃取液结合，避免了多环芳烃在水容器壁上的吸附。异丙醇或甲醇浓度为10% （V/V）时，对2 ~ 6环芳香族化合物的富集最适宜。在500 mL的处理水样中，所研究的多环芳烃的回收率在71.4 ~ 95.2%之间。所提出的方法具有极低的检出限（亚纳克/升），并已应用于饮用水、地表水和工业废水（炼油厂）样品中，效果良好。
An off-line solid-phase extraction procedure followed by high-performance liquid chromatography with ultraviolet detection for the determination of 16 priority polycyclic aromatic hydrocarbon pollutants in aqueous matrices was described. Diverse aspects determining extraction efficiency such as packing type (disk or cartridge), elution solvents and addition of organic modifiers to the sample were evaluated. Elution with acetonitrile yields the highest recoveries. Rinsing the sample bottle with acetonitrile and combining the rinse with the sample extract avoids the adsorption of polycyclic aromatic hydrocarbons on the walls of the water containers. The use of isopropanol or methanol 10 % (V/V) was the most appropriate amount for the enrichment of 2- to 6-ring aromatic compounds only on C18 cartridge. The recoveries for all studied polycyclic aromatic hydrocarbons are ranged from 71.4 to 95.2 % for a treated water samples of 500 mL. The proposed method gives very low detection limits (subnanograms per liter) and it has been applied to drinking water, surface water and industrial effluent (oil refinery) samples with good results.