Solid-phase extraction
Selective determination of Cr (VI) by on-line solid phase extraction FI-SPE-FAAS using an ion exchanger resin as sorbent: an improvement treatment of the analytical signal
... on-line solid phase extraction (SPE) coupled with flame atomic ab- sorption spectroscopy (FAAS) to selectively quantify chromium (VI) in the presence of chromium (III) was devel- ...as solid ...
5
Dispersive solid phase extraction based on butylamide silica for determination of sulfamethoxazole in milk samples by capillary electrophoresis
... 10 mg of butylamide silica was placed in polypropylene centrifuge tubes (15 mL) together with 3 mL of solution pre- pared earlier (solution A). The mixture was dispersed for 5 min in a vortex and filtered through a 0.45 ...
9
Enantiomeric separation of organophosphorus pesticides by capillary electrophoresis Application to the determination of malathion in water samples after preconcentration by off line solid phase extraction
... In the case of malathion, it was only partially enantiomer- ically separated by CE in a previous work [17] whereas under the conditions proposed in this work it was baseline separated although in a longer analysis time ( ...
7
Cationic amine bridge periodic mesoporous organosilica materials for off line solid phase extraction of phenoxy acid herbicides from water samples prior to their simultaneous enantiomeric determination by capillary electrophoresis
... the extraction efficiency of six chiral phenoxy acid herbicides from water samples 425 and to select the sorbent providing the highest recovery for these ...
48
Evaluation of bi-functionalized mesoporous silicas as reversed phase/cation-exchange mixed-mode sorbents for multi-residue solid phase extraction of veterinary drug residues in meat samples
... X-ray diffraction (XRD) patterns of the silicas were obtained on a Philips Difractometer model PW3040/00 X’Pert MPD/MRD at 45 KV and 40 mA, using a wavelength Cu K ( = 1.5418 Å). Scanning electron micrographs and ...
36
Application of capillary zone electrophoresis withof f line solid phase extraction to in i vitro metabolism studies of antifungals
... robust solid-phase extraction (SPE) procedure for the cleanup and sample preconcen- tration of the antifungals (ketoconazole, clotrimazole, itra- conazole, fluconazole, and voriconazole) and their ...
9
One pot synthesized functionalized mesoporous silica as a reversed phase sorbent for solid phase extraction of endocrine disrupting compounds in milks
... liquid-liquid extraction followed by solid-phase extraction (SPE) using a new one-pot synthesized ordered mesoporous silica (of the SBA-15 type) functionalized with octadecyl groups (denoted ...
30
A novel hybrid mesostructured silica for the solid-phase extraction of estrogenic hormones from waters
... bed. Extraction was performed using a Supelco Visiprep™ DL solid phase extraction vacuum manifold 12 port model (Sigma Aldrich) connected to a vacuum pump at ...After extraction of the ...
32
New analytical methodologies based on (NANO) materials for preparation of samples of clinical and environmental interest
... the extraction of pentamidine from water and ...polymer solid phase extraction ...selective extraction of different trace analytes in complex matrices due to their high selectivity, ...
262
Extraccin por ultrasonido de los polifenoles de la fruta del Punica granatum (Granada)
... ultrasonic extraction of polyphenolic compounds from ...optimal extraction conditions of polyphenols were determined as follows: extraction time 60 min, solid liquid ratio 1:20 and alcoholic ...
8
Aplicabilidad clínica de tecnología de hibridación de ácidos nucleicos a gran escala (micromatrices o microarrays) en estudios de alergia
... (Immuno Solid-Phase Allergen Chip) is a multiarray technology package designed for the assessment of patients with a history inconsistent, unsatisfactory response to treatment or polysensitized ...
8
Crystallization mechanism of Fe-MFI from wetness impregnated Fe2O3-SiO2
... the solid phase with the synthesis ...amorphous solid obtained at short synthesis times retains around 80 % of the initial iron content existing in the raw ...
30
Extending Wertheim’s perturbation theory to the solid phase of Lennard-Jones chains: Determination of the global phase diagram
... fluid– solid separation of alkane ...the solid phase of flexible chain molecules would be of great interest both from a fundamental and from a practical point of ...fluid phase of chain mol- ...
11
Breast milk metabolome characterization in a single phase extraction, multiplatform analytical approach / Coral Barbas [et al ]
... new extraction methodology was developed that successfully retains metabolites from BM in a single-phase using an optimized methyl-tert-butyl ether solvent ...single-phase extraction procedure ...
28
Analytical methodologies based on LC–MS/MS for monitoring selected emerging compounds in liquid and solid phases of the sewage sludge
... The limit of quanti fi cation (LOQ) was estimated for a signal to noise (S/N) ratio 10 from the sample chromatograms at the lowest validation level tested (n = 3), using the quanti fi cation transition. As experiments were ...
10
Analysis of antioxidants from orange juice using countercurrent supercritical fluid extration, micellar electrokinetic chromatography and reverse phase HPLC / C Barbas [et al ]
... the extraction process, yielding a better recovery of BA1 (peak 2) in both fractions 1 and 2 while increasing the content of flavanones (peaks 5 - 8) in the ...
6
Preparación de la fase sólida y la caracterización de la dispersión sólida de albenzadol
... the solid state was investigated by infrared spectroscopy, and nuclear magnetic ...O-protonation. Phase solubility study showed a linear increase in the solubility with the polymer ...
17
Multiscale modeling of junction processing in FDSOI and FinFET devices for 10nm node technology and below
... crystalline phase consists of the SPER energy and an extra term due to the elastic work performed in straining the alloy to overcome the bond ...crystalline phase is not as the same type as the bulk, ...
158
TítuloSolid Liquid two phase partitioning bioreactors for the treatment of gas phase VOCs
... The same New Brunswick Bioflo III operating at 30 °C was used for oxygen transfer experiments. All systems, which consisted of either tap water or 500 g of either glass beads, nylon 6,6, styrene–butadiene copolymer (SB) ...
12
Chromatography based on and in line pre concentration methods in capillary electrophoresis / L Saavedra, C Barbas
... A simple solid-phase micro-extraction device was fabricated for use in on-line immuno-affinity CE. The device, designed in the form of a four-part cross-shaped configuration, includes a large-bore ...
9