摘要
本文系统地研究了淋洗剂强度、用量和有机改性剂的加入对固相萃取水中多环芳烃回收率的影响。研究表明，二氯甲烷和苯的洗脱效果较好，回收率为86％-99％；当淋洗剂的用量超过1．5ml时，对多环芳烃的回收率没有明显的影响，向自来水样中加入20％有机改性剂可明显改善多环芳烃的回收效果，使回收率达到89％-102％。
This study was designed to demonstrate the utility of SPE for trace enrichment of polycyclic aromatic hydrocarbons （PAILS） in water samples. The result showed that dichloromethane and benzene are the preferred elution solvents for the adsorbed PAils. The recoveries of PAils with SPE are in the range of 86 % to99 %. Whenthe elution solvent is selected, the variation of recoveries as a function of the volume of elution solvent used can be determined. Meanwhile, further studies showed that recoveries become worse as the number of rings of PAH increased. The decrease of solubility and adsorption onto container Surface may be responsible for bad recoveries. The addition of 20 % （v/v） methanol or ethanol into the sample prior to spiking can greatly improve the recoveries of larger PAils. Recoveries of 89% - 102% can be obtained.
出处
《江西化工》
2006年第2期48-49,共2页
Jiangxi Chemical Industry
关键词
高效液相色谱法
固相萃取
多环芳烃
合成水样
high performance liquid chromatography solid - phase extration polycyclic aromatic hydrocarbons synthetic water sample
