在各種的塑膠可塑劑當中，鄰苯二甲酸酯類（Phthalate esters, PAEs）是應用最多且最廣的一種，尤其添加至PVC更是大宗，在任意棄置塑膠廢棄物與環境化學的作用下，鄰苯二甲酸酯類（PAEs）很容易就流進環境之中且造成污染。
鄰苯二甲酸酯類（PAEs）的急毒性（Acute Toxicity）並不大，但是卻有生物累積與生物放大的現象，而且長期累積的結果會造成畸形遺傳的生成，有機體的突變，抑制生長，乃至於造成癌症，所以引發人們的注意。
加速溶劑萃取（Accelerated Solvent Extraction, ASE）是目前最新的前處理萃取技術，它主要利用加高溶劑的溫度及壓力來加速萃取的進行。本研究便針對於河川底泥（Sediment）及土壤中之12 種PAEs，採用自行設計組裝的ASE裝置，並配合以GC-FID及GC-MS偵測。從結果中可發現，此方法能節省溶劑量且能快速有效的從河川底泥及土壤中，萃取出PAEs，並配合以同位素稀釋氣相層析質譜法偵測，此方法並經由QCS345樣品之多次驗證，測出的結果皆在證書的範圍內，證明此方法能簡單有效準確的量測出土壤及河川底中之PAEs的含量。

Among many plasticizers available, phthalate seters (PAEs) are most commonly used in plastic industry, especially as PVC additives.Becaus of the wide applications of plastic products, this type of plasticizer interacts with different media in the environment and causes pollution problems.
Although the acute toxicity of phthalate esters is not obvious, possible chronic effects due to bioaccumulation and biomagnification have been well documented by researchers.These include growth inhibition, mutagenic, teratogenic and carcinogenic effects.Nevertheless, various phthalate esters are actually involved in the production different plastics.It-is therefore essential to develop analytical methods to differentiate these compounds.
This research aims at the development of new pretreatment extraction technique, ASE (Accelerated Solvent Extraction) for 12 PAEs in soil and sediment samples, and analytical scheme using isotope dilution GC-MS.Results indicate that ASE is an efficient, solvent-saving and fast method for the extraction of soil and sediment samples for PAE determination.The overall accuracy and precision of this method is verified with the analyses of QCS 345 samples from ERA.