土壤樣品中含Phenanthrene與Pyrene萃取方法比較之研究

The Comparison of Extraction Methods of Soil Contaminated with Phenanthrene and Pyrene

張明琴(Ming-Chin Chang) ； 謝文彬(Wen-Pin Hsieh) ； 蘇弘毅(Hung-Yee Shu) ； 王敏昭(Min-Chao Wang) ； 郭雅鈴(Ya-Ling Kuo) ； 黃俊孝(Chun-Hsiao Huang)

《弘光學報》 42期 (2003/11) Pp. 171-177

https://doi.org/10.6615/HAR.200311.42.20

摘要

近年來台灣地區由於有害廢棄物不當排放，造成生態環境遭受嚴重威脅與迫害。油品洩漏於土壤與地下水中，常含多環芳香煙化合物(PARs)，其已被證實超過30種及好幾百種衍生物具有致癌性，為目前所知環境中最大量具致癌性單一化學物種，並被懷疑為造成環境荷爾蒙物質之一，引起全球注意。因此，本研究主要目的為提出合PARs污染之現地場址可行復育技術前，在實驗室中，先行研擬土壤中合PARs之萃取與分析方法，以作為日後進行現地處理PARs、污染土壤技術研究時之基礎。亦即經由建立最佳之萃取/分析方法與條件，可得處理前/後濃度並經由計算獲得污染處理之去除效率。本研究選擇三環phenanthrene (phe)與四環pyrene (phy)作為目標污染物。土壤樣品之前處理萃取方式，分別採用環保署公告之索式(soxhlex)及超音波(sonication)方法，萃取後樣品注入高效層析儀(HPLC)定量分析其PARs濃度。由實驗結果得知索式萃取對方合phe與pyr之總萃取回收率高達90%，而超音波約可達85%。雖然超音波萃取回收率較索式法略低，但是比較省時，且溶劑使用量少，為較經濟又環保之萃取法，故選用超音波法作為後續處理污染土壤之樣品前處理萃取方式。

關鍵字

多環芳香煙化合物 ； 索式萃取 ； 超音波萃取

並列摘要

In the recent years, the ecological environment is threaten and damaged severely in Taiwan according to the hazardous wastes illegal dumping. The petroleum leaks in soil and groundwater was the major sources of polycyclic aromatic hydrocarbons (PAHs) in hazardous sites. There are more than 30 PAHs and hundreds of their derivations are carcinogenic have reported by the researchers. They are the predominant amount of a group of chemicals which are carcinogenic in the environment so far. PAHs also are suspected as one of the material resulted into the environmental endocrine disruption. They have attracted the attention all over the world. Therefore, the objective of this study was to prepare and extract the simulated soil samples in laboratory. By developing the above technique, the basis may be builded for the future site remediation of PAHs problems. The concentrations that obtained from before and afther experiments could be calculated the removal efficiencies. In this study, we employed the 3-ring phenanthrene (phe) and 4-ring pyrene (pyr) as the target compounds. The soxhlex and sonication, EPA standard extraction methods, were applied. The extracted samples were determined the PAHs concentrations by high performance liquid chromatography (HPLC). From the experimental results, soxhlex recoveries of both phe and pyr were high about 90%. The sonication recoveries could reach up to 85%. Although the sonication recoveries were lower than soxhlex's. The previous method was time-saving and solvent-saving. It was more economic and environmental friendly as well. Therefore, we concluded and suggested that sonication was the better application method for the soil sample extraction in the future site remediation.

並列關鍵字

polycyclic aromatic hydrocarbons ； PAHs ； phenanthrene ； pyrene ； soxhlex ； sonication

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