美國United Chemical Technologies (UCT)公司是硅基固相萃取技術的市場令頁先者,其制造的寬范圍的高度可再生柱,讓色譜工作者得到穩定的萃取技術。
UCT公司標志性的成就是深入研究和開發與硅膠及其表面修飾聚合物有關的聚合硅化學。其Worldwide Monitoring® 固相萃取(SPE)產品已經滲透到包括用于藥品檢驗、制藥工業、環境保護、農業和生物科技市場等領域。
Worldwide Monitoring® 產品包括UnitedChem固相萃取 (SPE) 產品,液相色譜產品和散裝固相吸附劑粉末。 Worldwide Monitoring® 鍵合硅膠被也用在樣品制備和大容量制備色譜。 大范圍的孔徑尺寸和顆粒尺寸的吸附劑可以有效地滿足大多數分離需求。United Chemical Technologies (UCT)公司擁有如下注冊商標
CLEAN SCREEN® / CLEAN-UP® / ENVIRO-CLEAN ®
SELECTRASORBTM
/ STYRE SCREEN TM / XtrackT®
固相萃取(Solid-Phase Extraction,縮寫SPE)為近年發展起來一種微量樣品處理技術,主要用于樣品的分離、純化和濃縮。使用SPE能避免液—液萃取所帶來比如不Wan全的相分離、較低的定量分析回收率、使用易碎的玻璃器皿和產生大量的有機廢液等許多問題。與液—液萃取相比,SPE采用高效、高選擇性的固定相,固相萃取更有效,容易達到定量萃取,快速和自動化,具有能顯著減少溶劑用量,減少樣品預處理過程,加快了樣品處理速度,消除某些干擾雜質等優點。
SPE可用于氣相色譜(GC)、高效液相色譜(HPLC)、紅外光譜(IR)、質譜(MS)、核磁共振(NMR)、紫外—可見光譜(UV/VIS)和原子吸收(AAS)等各種分析方法的樣品預處理。SPE在較復雜的有機化合物分析方面有著廣闊的發展前景。
我們所有的鍵合相都得到檢驗以確信其再現性和性能。仔細檢查顆粒尺寸分布、孔直徑和裝置確保恒定的柱流動。全面檢查吸附劑以滿足高質量的要求。我們相信,我們產品的再現性是無人匹敵的。UnitedChem固相萃取 (SPE) 產品
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