line solid phase extraction

... combination is not used for the solid phase extraction studies In this work, a simple and accurate procedure for cadmium(II) and lead(II) ions that is based on solid phase extraction of cadmium(II) ... 2010) Natural and synthetic solid phase extractors that have high surface area and adsorption capacity, stable for acidic and basic media are preferred for solid phase extraction of metal ions Zeolites, ... 2005), microextraction (Gharehbaghi and Shemirani, 2010; Shirkhanloo et al., 2010; Salahinejad and Aflaki, 2011) etc are continuously used by analytical chemists around the world Solid phase extraction...

Ngày tải lên: 02/09/2015, 13:45

... Rr Relative recovery RSD Relative standard deviation SBME Solid bar microextraction SPE Solid phase extraction SPME Solid phase microextraction TEA Triethylamine TGA Thermogravimetric analysis ... Limit of quantification muSPE Micro solid phase extraction using mixed matrix membrane μ-SPE Membrane bag micro solid phase extraction MPME Membrane protected microextraction MWCNT Multi-walled carbon ... Membrane-assisted micro -solid phase extraction (μ-SPE) is a recently introduced sample preparation technique that integrates microextraction paradigms and membrane microfiltration with solid phase extraction...

Ngày tải lên: 10/09/2015, 09:12

... dealt with the solid phase extraction and this thesis is dedicated to explore the potential of monolith as a solid phase extraction cartridge Chapter 24 1.6 MONOLITH: AS A SOLID PHASE EXTRACTOR ... analyte extraction, either as offline and online solid phase extractor, have been extensively reviewed [Raynie, 2006; Fontanals et al., 2007] One of the techniques is solid phase microextraction ... silica monolith as solid phase extraction cartridge for the extraction of epinephrine, metanephrine and normetanephrine from urine  Application of the silica monolith as solid phase extraction cartridge...

Ngày tải lên: 10/09/2015, 15:50

... Chai, M., Zhang, Z., Pawliszyn, J., Solid- Phase Microextraction: An Attractive Alternative, Environmental Lab.11 (1992) 10-15 Pawliszyn, J Solid Phase Microextraction : Theory and Practice (1997) ... Y.), 275 Ulrich, Solid- phase microextraction in biomedical analysis, Journal of Chromatography A, 902 (2000) 167-194 L.J.Krutz, S.A.Senseman, A.S.Sciumbato, Solid- phase microextraction for herbicide ... Pawliszyn, In vivo sampling with solid phase microextraction, Journal of Biochemical and Biophysical Methods, 70 (2007) 181193 Pragst, Application of solid- phase microextraction in analytical toxicology...

Ngày tải lên: 02/05/2014, 23:00

... in solid- phase microextraction techniques for pharmaceutical and biomedical analyses Anal Sci 2011, 27:893-905 Llompart M, Li K, Fingas M: Solid- phase microextraction and headspace solid- phase ... determine analyte concentrations in the water phase Commonly applied are liquid-liquid extraction [LLE] and solid- phase extraction [SPE] LLE can yield exhaustive extraction of the analytes but is time-consuming, ... Wiley-VCH; 1997 Pawliszyn J (Ed): Handbook of Solid Phase Microextraction Peking: Chemical Industry Press; 2009 Alpendurada MF: Solid- phase microextraction: a promising technique for sample preparation...

Ngày tải lên: 20/06/2014, 20:20

... core (white column) and silica/gold nanoshells (black columns) (b) Calculated (solid line) and measured (dashed line, circles) light scattering spectra of 70/100 nm silica/ gold nanoshells Nanoscale ... report on the first, to the best of our knowledge, application of silica/gold nanoshells to a solid- phase dot assay in which the nanoshells are used as color markers for biospecific staining of ... stabilized particles, by the positive interaction with complementary analyte (hIgG) molecules in solid- phase dot-immunoassay, and by the absence of interaction with a negative control (BSA) The protocol...

Ngày tải lên: 22/06/2014, 22:20

... %-Halocarbonyl CNLONSMDQZZZZZZZZZZZZZZZZZZZZ'''13 1.3 Examples of Solid- Phase Synthesis of Substituted AminesZZZZZZ'ZZZ.18 1.3.1 Solid- Phase Synthesis of ACE Inhibitors with %-Ketocarbonyl Compounds ... University, August 2010, Solid- Phase Synthesis of N-Carboxyalkyl Unnatural Amino Acids Major Professor: Martin J 9^/NMMEKl, Ph.D A novel route has been developed for the solid- phase synthesis of Ncarboxyalkyl ... The utilization of solidphase methods and combinatorial chemistry for the synthesis of amino acid derivatives has become an important methodology since the beginnings of solid- phase peptide synthesis...

Ngày tải lên: 24/08/2014, 13:46

Ngày tải lên: 14/11/2014, 06:36

Ngày tải lên: 14/11/2014, 09:52

... tetrahydroisoquinolines Parallel Library Synthesis • Optimization of 12 reactions provides compounds • The library members are spatially separated, so this technique can be used for solution as well as solid phase...

Ngày tải lên: 17/04/2015, 08:58

... Cầu nối (Linker)  Cấu trúc trung gian nối chất mang tác chất phản ứng  Nhiều loại cầu nối khác SOLID SUPPORT • The most common are spherical particles (beads, 0.04-0.15 mm) • Are mechanical stability ... by Solvent ‘Shrunken’ state ‘Swollen’ state : Permeable to solvent and reagent Classification of Solid Support Gel-type supports 1.1 Polystyrene (PS) resins 1.2 Polyacrylamide resins 1.3 Polyethylene ... PEG-polystyrene graft supports X= OH or NH2 Functionalized PEG-PS Resins Considerations in Choosing a Solid Support • Mode of attachment and cleavage of materials from the resin (linker) • Compatibility...

Ngày tải lên: 17/04/2015, 09:11

... described here: solid phase crystallization (Section 1.3.1), seed layer approach (Section 1.3.2), and liquid phase crystallization (Section 1.3.3) 1.3.1 Solid phase crystallization The solid phase crystallization ... Tsuge, K Wakisaka, S Tsuda, High-quality polycrystalline silicon thin film prepared by a solid phase crystallization method, Journal of NonCrystalline Solids, 198-200 (1996) 940-944 [22] M Keevers, ... technologies 1.3 Polycrystalline Si thin-film solar cells 1.3.1 Solid phase crystallization 1.3.2 Seed layer approach 1.3.3 Liquid phase crystallization 1.4...

Ngày tải lên: 09/09/2015, 11:16

... Conference Papers 183 Apendices 185 viii Summary Polycrystalline silicon prepared from solid- phase crystallisation (SPC) of PECVD (plasma-enhanced chemical vapour deposition) ... shown, for comparison, is the Raman spectrum measured for a polished single-crystalline Si wafer (solid black line) 37 Figure 2.18: (a) EBSD grain size orientation map, (b) Grain size distribution ... flow ratio The dashed lines are guides to the eye 65 Figure 3.2: Hall mobility of SPC n+ poly-Si films as a function of the majority carrier concentration The solid line indicates the...

Ngày tải lên: 09/09/2015, 11:21

... data, deconvoluted into the LSM, HSM and SiNx absorption peaks, represented by the solid line, dotted line and dashed line, respectively 45 Figure 3.9 (a) Typical transmittance spectrum ... Melting temperature of silicon (1414 oC) Time Characteristic time of solid phase crystallisation Incubation time for solid phase crystallisation Misorientation angle Short range order bond angle ... Tsuda, "High-Quality Polycrystalline Silicon Thin Film Prepared by a Solid Phase Crystallisation Method," Journal of Non-Crystalline Solids 198-200, pp 940, 1996 H M Branz, C W Teplin, M J Romero,...

Ngày tải lên: 10/09/2015, 09:31

... < 0.12 % Dashed lines: calculated lattice parameters according to Vegard’s rule between Si and C; dashdotted lines: calculations using Vegard’s rule between Si and β-SiC; solid lines: theoretical ... Annealing Technologies 9 1.5 Research Objectives 13 1.6 Outline of the thesis 14 V CHAPTER LITERATURE REVIEW 16 2.1 Introduction 16 2.2 Solid phase epitaxial regrowth (SPER) annealing 16 2.2.1 Concept ... amorphous-crystalline (α/c) region The end-of-range (EOR) of the implantation is formed at the transition between the amorphous and crystalline region At the EOR, the silicon substrate retains its crystalline...

Ngày tải lên: 12/09/2015, 09:28

... Solution phase synthesis of 3-36 124 3.7.2 Solid- Phase library synthesis of 3-38, 3-39, 3-44, 4-45 and 3-47 126 3.7.3 Experimental Section 132 3.7.3.1 Solution Phase Synthesis 132 3.7.3.2 Solid- Phase ... typical solid- phase synthesis reaction generally consists of a solid support, linker and substrate (Figure 1.1) Linker Substrate Solid Support Figure 1.1 Three key elements of solid- phase synthesis ... Solution -phase reactions leading to N, N’-alkylaryl carbodiimide 59 3-12 Scheme 3.9 Revised synthesis of 3-7 60 Scheme 3.10 Solid- phase Synthesis of 3-7 63 Scheme 3.11 Traceless solid- phase synthesis...

Ngày tải lên: 14/09/2015, 08:25

... PUBLICATIONS CHAPTER 1: INTRODUCTION 1.1 Solid- phase synthesis (SPS) 1.1.1 Solid supports 1.1.2 Linkers 1.1.3 Reaction monitoring in solid- phase synthesis 13 1.1.4 Solid- phase synthetic libraries -from ... TRACELESS SOLID- PHASE SYNTHESIS OF 1,7-DISUBSTITUTED PURINES 77 3.1 Introduction 77 3.2 Outline of our strategy 78 3.3 Results and discussions 79 3.3.1 Solution -phase synthesis study 79 3.3.2 Solid- phase ... molecule and eventually it is cleaved from the solid support (Figure 1.1) Figure1.1 Illustration of a solid- phase synthesis This concept of solid- phase synthesis was first raised by R B Merrifield...

Ngày tải lên: 15/09/2015, 17:09

... of solid materials is largely dependent on the mineralogical characteristics of the solid phase (Ettler et al 2003), the second objective involves identification of possible mineralogical phases ... variety of phases, namely phases with high Zn-Ni-P-Fe and phases with high Al-Si content The coexistence of Zn, Ni, P, and Fe, as observed in the map, suggests that Fe and PO43−-rich phases are ... mineral phases containing HMs or As However, FEG-EPMA provides information on phases containing HMs that were not detected by XRD analysis (e.g., lead sulfide in SI2 and a poorly crystalline Zn phase...

Ngày tải lên: 18/08/2016, 15:47

... Abstract—a-Acylamino-a,a-disubstituted ketones are of interest as ecdysone agonists Solid phase synthesis of prototypical a-acylamino-a,a-disubstituted ketones on two different solid supports is described In both cases the ketone ... Current address: Locus Discovery Inc., Four Valley Square, 512 Township Line Road, Blue Bell, PA 19422, USA A number of solid phase syntheses of ketones,3–22 including a-acylaminoketones,10–22 have ... to dryness, and the residue was dissolved in THF The solution was applied to a silica gel solid phase extraction cartridge which was eluted with CH2Cl2 (2×2 mL) The eluate was concentrated to...

Ngày tải lên: 26/08/2016, 11:29

... hóa trình tổng hợp TỔNG HỢP PHA RẮN TỔNG HỢP PHA RẮN SOLID PHASE SYNTHESIS • The scale SPS is limited and restricted by the amount of the solid support and its loading capacity • The preparation ... et al The Organic Chemistry of Drug Synthesis; Wiley-Interscience: New York, 1977 Ellman’s solid- phase synthesis of 1,4-benzodiazepines Ưu điểm Tổng hợp Pha rắn? Không cần cô lập chất trung ... Polystyrene-Polyethyleneglycol graft (TentaGel) Drawbacks that limit the use of TentaGel resin as a universal support for solid- phase chemistry: The substitutions of TentaGel resins are lower than PS resins although loading...

Ngày tải lên: 12/10/2016, 14:11