نتایج جستجو برای: accelerated solvent extraction

تعداد نتایج: 273883  

Journal: :Analytical and bioanalytical chemistry 2009
Xijuan Chen Kai Bester

In this study, a method for the determination of organic micro-pollutants, i.e. personal care products such as synthetic musk fragrances, household bactericides, organophosphate flame retardants and plasticizers, as well as phthalates in sludge, has been developed. This method is based on lyophilisation and accelerated solvent extraction followed by clean-up steps, i.e. solid phase extraction a...

Journal: :Journal of the Brazilian Chemical Society 2005

2008
Xun Yan Jatinder Rana Amitabh Chandra Doug Vredeveld Haywood Ware John Rebhun Timothy Mulder Kathryn Persons Dorothy Zemaitis

Abstract Medicinal herbs have a long history of use in improving human health and curing diseases. Herbal materials are naturally an excellent medicine library because they provide unlimited components with complex chemical structures and a wide range of bioactivities. Herbal materials have thus attracted wide interest of researchers in the identification of the active components and verificati...

Journal: :Journal of chromatography. B, Analytical technologies in the biomedical and life sciences 2011
Hao Wang Jing Zhang Fudie Gao Yi Yang Hejun Duan Yongning Wu Jean-Daniel Berset Bing Shao

A comprehensive method was developed for the simultaneous analysis in human breast milk of 12 synthetic musks, five nitro musks, six polycyclic muks and one macrocyclic musk; as well as one musk metabolite and triclosan. The target analytes were freeze dried and extracted using the accelerated solvent extraction (ASE) procedure. The extracts were further purified by gel permeation chromatograph...

2013
Nur Nabilah Shahidan Ruixue Liu Sineenat Thaiboonrod Cameron Alexander Kevin M. Shakesheff Brian R. Saunders

We demonstrate a new, scalable, simple, and generally applicable two-step method to prepare hollow colloidosomes. First, a high volume fraction oil-in-water emulsion was prepared. The oil phase consisted of CH2Cl2 containing a hydrophobic structural polymer, such as polycaprolactone (PCL) or polystyrene (PS), which was fed into the water phase. The water phase contained poly(vinylalcohol), poly...

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