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1.
In this work we prepared the hybrid material (SG) by the sol–gel method through the reaction between tetraethylortosilicate
(TEOS) and acetylacetonatepropyltrimethoxysilane (ACACSIL). We also immobilized the acetylacetonate on silica surface (GR)
by the grafting method through the reaction between a commercial silica and ACACSIL. Infrared thermal analysis showed that
these materials were thermally stable until 200 °C. SG is a microporous material and has surface area of 500 m2 g−1, average porous volume of 0.09 cm3 g−1 and organic content of 1 mmol g−1. GR is a mesoporous material and has surface area of 300 m2 g−1, average porous volume of 0.7 cm3 g−1 and organic content of 0.4 mmol g−1. Iron(III) was coordinated to SG and GR resulting in the SG–Fe and GR–Fe silicas which were tested as catalysts on the aerobic
epoxidation of cis-cyclooctene. SG–Fe yielded 100% of conversion and 94% of selectivity in epoxide whereas GR–Fe silica led
to a maximum conversion of 50% and 100% of selectivity. 相似文献
2.
Seebunrueng K Santaladchaiyakit Y Soisungnoen P Srijaranai S 《Analytical and bioanalytical chemistry》2011,401(5):1707-1716
A mixed anionic–cationic surfactant cloud point extraction (CPE) has been developed using sodium dodecyl sulfate (SDS) and
tetrabutylammonium bromide (TBABr) for the extraction and preconcentration of organophosphorus pesticides (OPPs) at ambient
temperature before analysis by high-performance liquid chromatography. The studied OPPs were azinphos-methyl, parathion-methyl,
fenitrothion, diazinon, chlorpyrifos, and prothiophos. The optimum conditions of the mixed anionic–cationic CPE were 50 mmol L−1 SDS, 100 mmol L−1 TBABr, and 10% (w/v) NaCl. The extracted OPPs were successfully separated within 11 min using the conditions of a Waters Symmetry C8 column,
a flow rate of 0.8 mL min−1, a gradient elution of methanol and water, and detection at 210 nm. Linearity was found over the range 0.05–5 μg mL−1, with the correlation coefficients higher than 0.996. The enrichment factor of the target analytes was in the range 6–11,
which corresponds to their limits of detection from 1 to 30 ng mL−1. High precisions (intra-day and inter-day) were obtained with relative standard deviation <1.5% (t
R) and 10% (peak area). Accuracies (% recovery) of the different spiked OPP concentrations were 82.7–109.1% (water samples)
and 80.3–113.3% (fruit juice samples). No contamination by the OPPs was observed in any studied samples. 相似文献
3.
Recent progress of the preparation of novel materials for catalysts utilizing metal-containing silsesquioxanes are reviewed
in the following categories: (i) activities of vanadium or titanium-containing silsesquioxanes as homogeneous catalysts for
oxidative reactions, (ii) preparation of immobilized or polymeric catalysts, and (iii) preparation of porous oxide catalysts
utilizing metal-containing silsesquioxanes. The present authors found that the liquid phase photo-oxidation of cyclohexane
in the presence of a vanadium-containing silsesquioxane as a homogeneous catalyst selectively afforded cyclohexanol and cyclohexanone
in high yields. Facile synthetic methods for group 4 metal-containing silsesquioxanes with functionalized silyl (or germyl)
groups are presented. Remarkably, titanocene(IV)-containing silsesquioxanes have been synthesized for the first time. The
presence of alkenylsilyl substituents shows a promotional effect on the epoxidation of cycloalkenes, which was found to be
more significant for titanium-bridged silsesquioxanes. By utilizing these silsesquioxanes, polymeric, starburst-like, and
dendritic silsesquioxanes were prepared as well as novel caged or macrocyclic molecules with organic–inorganic hybrid structures.
The controlled calcination of these metal-containing silsesquioxanes at around 823 K produces porous oxides with high BET
surface areas of 300–520 m2g−1 and uniformly-controlled micropores of 0.5–0.6 nm diameter. The oxides are found to include a well-dispersed metallic oxide
species. From group 13 elements-containing silsesquioxanes Br?nsted acidic oxides are produced. Among them, aluminum-containing
oxides show excellent activities for the cracking of cumene even at low temperature, 523 K, in spite of their amorphous nature. 相似文献
4.
Borges KB de Oliveira AR Barth T Jabor VA Pupo MT Bonato PS 《Analytical and bioanalytical chemistry》2011,399(2):915-925
The purpose of this study was the development and validation of an LC–MS–MS method for simultaneous analysis of ibuprofen
(IBP), 2-hydroxyibuprofen (2-OH-IBP) enantiomers, and carboxyibuprofen (COOH-IBP) stereoisomers in fungi culture medium, to
investigate the ability of some endophytic fungi to biotransform the chiral drug IBP into its metabolites. Resolution of IBP
and the stereoisomers of its main metabolites was achieved by use of a Chiralpak AS-H column (150 × 4.6 mm, 5 μm particle
size), column temperature 8 °C, and the mobile phase hexane–isopropanol–trifluoroacetic acid (95: 5: 0.1, v/v) at a flow rate of 1.2 mL min−1. Post-column infusion with 10 mmol L−1 ammonium acetate in methanol at a flow rate of 0.3 mL min−1 was performed to enhance MS detection (positive electrospray ionization). Liquid–liquid extraction was used for sample preparation
with hexane–ethyl acetate (1:1, v/v) as extraction solvent. Linearity was obtained in the range 0.1–20 μg mL−1 for IBP, 0.05–7.5 μg mL−1 for each 2-OH-IBP enantiomer, and 0.025–5.0 μg mL−1 for each COOH-IBP stereoisomer (r ≥ 0.99). The coefficients of variation and relative errors obtained in precision and accuracy studies (within-day and between-day)
were below 15%. The stability studies showed that the samples were stable (p > 0.05) during freeze and thaw cycles, short-term exposure to room temperature, storage at −20 °C, and biotransformation
conditions. Among the six fungi studied, only the strains Nigrospora sphaerica (SS67) and Chaetomium globosum (VR10) biotransformed IBP enantioselectively, with greater formation of the metabolite (+)-(S)-2-OH-IBP. Formation of the COOH-IBP stereoisomers, which involves hydroxylation at C3 and further oxidation to form the
carboxyl group, was not observed. 相似文献
5.
Boroujerdi AF Lee PA DiTullio GR Janech MG Vied SB Bearden DW 《Analytical and bioanalytical chemistry》2012,403(3):777-784
In-line solid-phase extraction–capillary electrophoresis coupled with mass spectrometric detection (SPE–CE–MS) has been used
for determination of 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP), codeine (COD), hydrocodeine (HCOD), and 6-acetylmorphine
(6AM) in urine. The preconcentration system consists of a small capillary filled with Oasis HLB sorbent and inserted into
the inlet section of the electrophoresis capillary. The SPE–CE–MS experimental conditions were optimized as follows: the sample
(adjusted to pH 6.0) was loaded at 930 mbar for 60 min, elution was performed with methanol at 50 mbar for 35 s, 60 mmol L−1 ammonium acetate at pH 3.8 was used as running buffer, the separation voltage was 30 kV, and the sheath liquid at a flow
rate of 5.0 μL min−1 was isopropanol–water 50:50 (v/v) containing 0.5% acetic acid. Analysis of urine samples spiked with the four drugs and diluted 1:1 (v/v) was studied in the linear range 0.08–10 ng mL−1. Detection limits (LODs) (S/N = 3) were between 0.013 and 0.210 ng mL−1. Repeatability (expressed as relative standard deviation) was below 7.2%. The method developed enables simple and effective
determination of these drugs of abuse in urine samples at the levels encountered in toxicology and doping. 相似文献
6.
DingCong Wang 《中国科学B辑(英文版)》2009,52(12):2114-2124
A new nano-assembly approach has been proposed for the preparation of macropore volume mesoporous aluminum oxide supports.
Secondary nano-assembly and a frame structure mechanism for large pore volume mesoporous supports have been proposed. In a
primary nano-assembly supersoluble micelle, aluminum hydroxide nanoparticles were precipitated in situ in surfactants with a volume balance (VB) less than 1, followed by secondary nano-assembly in linear and cylindrical shapes. The secondary nano-assembly of cylindrical
aluminum hydroxides was calcined to form nano cylindrical aluminum oxides. For the formation of macropore volume mesoporous
supports, we utilized a frame structure mechanism of mesoporous support, in which the exterior surface of the carrier may
not be continuous. This macropore volume support has been used for the hydrotreatment of a residual oil catalyst, which possesses
the following physical characteristics: pore volume 1.8–2.7 mL·g−1, specific surface area 180–429 m2·g−1, average pore diameter 17–57 nm, average pore diameter more than 10 nm (81%–94%), porosity 87%–93%, and crush strength 7.7–25
N·mm−1. 相似文献
7.
Abstract
Organo-modified mesoporous silica SBA-15 has been studied for sorption of carbon dioxide (CO2). The SBA-15 sample was functionalized with a branched chain polymer, polyethylenimine (PEI), of different molecular weights (1,300 and 2,000 g mol−1). Surface modification was carried out by impregnation of silica by PEI or by grafting with (3-chloropropyl)triethoxysilane, followed by substitution of chlorine atoms by PEI ligands. The prepared modified mesoporous materials were characterized by nitrogen adsorption/desorption at 77 K, high-resolution transmission electron microscopy, small-angle X-ray scattering, and thermal methods. Sorption of CO2 was studied by gravimetric method at 303 K. The total amount of sorbed CO2 varied between 0.19–0.67 mmol/g for respective samples. Regeneration of the materials after adsorption was achieved by thermal treatment at 343 K. 相似文献8.
Consuelo Cháfer-Pericás Ángel Maquieira Rosa Puchades Javier Miralles Amelia Moreno 《Analytical and bioanalytical chemistry》2010,396(2):911-921
An indirect competitive enzyme-linked immunosorbent assay (ELISA) was developed in plate to detect three sulfonamide residues
(sulfamerazine (SMR), sulfadimetoxine (SDM), and sulfadiazine (SDZ)) in gilthead sea bream (Sparus aurata) samples. Different extraction methodologies—using methanol/water 1:1 (v/v) + ethylene diamine tetraacetic acid (EDTA) 0.5% (m/v), acetonitrile, phosphate-buffered saline (PBS) 10 mmol L−1 pH 7 and acetate buffer 100 mmol L−1 pH 5—and cleanup steps, based on solid-phase extraction (C18, SCX, Si) or liquid extraction with hexane, were assayed. As optimum, a fast and simple method using acetonitrile was selected
to extract the sulfonamide residues from the edible muscle of fish. Due to matrix effects, a standard addition calibration
curve in fish extract is necessary for quantification purposes. Sulfonamide-free samples were spiked at different concentration
levels (between 30 and 90 ng g−1, 5–15 ng mL−1 in plate) and average recoveries (n = 8), ranging from 71% to 95%, 65% to 79%, and 72% to 95%, were obtained for SMR, SDM, and SDZ, respectively. The assay detection
limits for these antibiotics were lower than 100 μg kg−1 (maximum residue level established by the European Union). The accuracy was evaluated by spiking blank fish extracts at different
concentrations (10–40 ng mL−1, 5–20 ng mL−1 in plate), and the relative errors ranged between ±20%. Finally, in order to confirm the utility of the developed ELISA as
a screening methodology, fish samples from different supermarkets were analyzed, and results were compared with those obtained
by a validated high-performance liquid chromatography (HPLC) method. The correlation between the results obtained by both
ELISA and HPLC methods is satisfactory.
相似文献
9.
Xueao Zhang Jianfang Wang Wenjian Wu Changli Liu Siwen Qian 《Journal of Sol-Gel Science and Technology》2007,43(3):305-311
Highly ordered amino-functionalized mesoporous silica thin films have been directly synthesized by co-condensation of tetraethoxysilane
(TEOS) and 3-aminopropyltriethoxysilane (APTES) in the presence of triblock copolymer Pluronic P123 surfactant species under
acidic conditions by sol-gel dip-coating. The effect of the sol aging on thin films organization is systematically studied,
and the optimal sol aging time is obtained. The amino-functionalized mesoporous silica thin films exhibit a long-range ordering
of 2D hexagonal (p6mm) mesostructure with a large pore size of 8.3 nm, a large Brunauer–Emmett–Teller (BET) specific surface area of 680 m2 g−1 and a large pore volume of 1.06 cm3 g−1 following surfactant extraction as demonstrated by X-ray diffraction (XRD), Transmission electron microscope (TEM), and physical
adsorption techniques. Based on BET surface area and weight loss, the surface coverage of amino-groups for the amino-functionalized
mesoporous silica thin films is calculated to be 3.2 amino-groups per nm2. Moreover, the functionalized thin films display improved properties for immobilization of cytochrome c in comparison with pure-silica mesoporous thin films. 相似文献
10.
Jingjing Yu Jiaxing Tu Faqiong Zhao Baizhao Zeng 《Journal of Solid State Electrochemistry》2010,14(9):1595-1600
A magnetic mesoporous carbon material (i.e., mesoporous iron oxide/C, mesoFe/C) is synthesized for protein immobilization,
using glucose oxidase (GOx) as model. Transmission electron microscopy images show that mesoFe/C has highly ordered porous
structure with uniform pore size, and iron oxide nanoparticles are dispersed along the wall of carbon. After adsorption of
GOx, the GOx-mesoFe/C composite is separated with magnet. The immobilized GOx remains its natural structure according to the
reflection–absorption infrared spectra. When the GOx-mesoFe/C composite is coated on a Pt electrode surface, the GOx gives
a couple of quasireversible voltammetric peaks at −0.5 V (vs. saturated calomel electrode) due to the redox of FAD/FADH2. The electron-transfer rate constant (k
s) is ca. 0.49 s−1. The modified electrode presents remarkably amperometric response to glucose at 0.6 V. The response time (t
95%) is less than 6 s; the response current is linear to glucose concentration in the range of 0.2–10 mM with a sensitivity of
27 μA mM−1 cm−2. The detection limit is 0.08 mM (S/N = 3). The apparent Michaelis–Menten constant (K
mapp) of the enzyme reaction is ca. 6.6 mM, indicating that the GOx immobilized with mesoFe/C has high affinity to the substrate. 相似文献
11.
Huiling Zhao Yanhui Ma Jing Tang Jun Hu Honglai Liu 《Journal of solution chemistry》2011,40(4):740-749
Novel CO2 adsorbents were prepared by grafting aminosilanes on mesoporous silica MCM-41. The effects of solvent and temperature on
the grafting of the amine group were studied. The results of thermal gravimetric analysis of the AEAPDMS-MCM-41s produced
in different solvents revealed that the nonpolar solvent toluene and the aprotic polar solvent THF are beneficial to the amine
group modification reaction. The CO2 adsorption capacity of AEAPDMS-MCM-41s produced in toluene had a relatively high value of 2.20 mmol⋅g−1. 相似文献
12.
Callus induction and plant regeneration from different explants of Actinidia deliciosa 总被引:1,自引:0,他引:1
In this study, an efficient procedure was developed for callus induction and regeneration of kiwifruit (Actinidia deliciosa) using different organs of shoots developed under in vitro conditions. Effects of explants source and media (M1, 1.0 mg l−1 BA + 2.0 mg l−1 2,4-D–M2, 1.0 mg l−1 NAA + 2.0 mg l−1 2,4-D) on initiation of callus were examined in order to obtain callus for organogenesis. The best callus for plant regeneration
was obtained from leaf explants on Murashige and Skoog’s medium (MS) supplemented with M2. Formation of callus from leaf of kiwifruit (A. deliciosa) was cultured in MS medium containing different concentration of N6-benzylaminopurin (BA; 0.0, 1.0, 2.0, 4.0, 6.0, 8.0 mg l−1) for callus proliferation and plant regeneration. Although the first shoot formation was appeared in medium containing 6.0
and 8.0 mg l−1 BA, the best shoots formation was obtained in medium with 4.0 mg l−1 BA. 相似文献
13.
A softwood bleached kraft pulp (SBKP) was subjected to electro-mediated oxidation in water with TEMPO or 4-acetamido-TEMPO
without any chlorine-containing oxidant. Solid recovery ratios of water-insoluble fractions of the oxidized SBKPs were more
than 80%, and C6-carboxylate contents increased up to approximately 1 mmol g−1 after oxidation for 48 h. Significant amounts of C6-aldehyde groups (0.17–0.38 mmol g−1) were also formed in the oxidized SBKPs. The degree of polymerization decreased from 2,200 to 520 and 1,400 by the oxidation
for 48 h with TEMPO at pH 10 and 4-acetamido-TEMPO at pH 6.8, respectively. The original cellulose I crystal structure and
crystallinity of SBKP were maintained after the oxidation, indicating that all C6-oxidized groups were selectively formed
on crystalline cellulose microfibril surfaces. The oxidized SBKPs with carboxylate contents of more than 0.9 mmol g−1 were convertible to individual cellulose nanofibrils in yields of more than 80% by disintegration in water. 相似文献
14.
Zhang ZX Gao PF Guo XF Wang H Zhang HS 《Analytical and bioanalytical chemistry》2011,401(6):1905-1914
1,3,5,7-Tetramethyl-8-(N-hydroxysuccinimidyl butyric ester)difluoroboradiaza-s-indacene (TMBB-Su), a new BODIPY-based fluorescent probe, was designed and synthesized for the labeling of amino compounds.
It was used as a pre-column derivatizing reagent for determination of amino acid neurotransmitters by high-performance liquid
chromatography (HPLC). The fluorescence quantum yield in acetonitrile increased from 0.84 to 0.95 when it reacted with amino
acid neurotransmitters. Derivatization of TMBB-Su with seven amino acid neurotransmitters was completed within 30 min at 25 °C
in 24.0 mmol L−1 pH 7.8 boric acid buffer. The separation was performed on a C18 column with methanol–water–buffer 55:35:10 (v/v) as mobile phase (buffer: 0.10 mol L−1 H3Cit–0.10 mol L−1 NaOH). Interference from the other concomitant amino acids was eliminated successfully by means of pH gradient elution. With
fluorescence detection at 494 and 504 nm for excitation and emission, respectively, the limits of detection (signal-to-noise
ratio = 3) were from 2.1 to 12.0 nmol L−1. The proposed method has been used to determine amino acid neurotransmitters in the cerebral cortex of mice with cerebral
ischemia at the convalescence stage with satisfactory recoveries varying from 94.9 to 105.2%. 相似文献
15.
Boleslav Taraba 《Journal of Thermal Analysis and Calorimetry》2012,107(3):923-926
Simple adaptation of the technique of immersion calorimetry enables determining both integral and differential adsorption
heats as well as the course of the adsorption isotherm of phenol on activated carbon. The innovative aspect of the applied
procedure consists in bringing the phenol aqueous solution to contact with the suspension of carbon with water. Thus, the “interfering” heat effect of carbon interaction with water is eliminated, and only the net
adsorption heat of phenol is monitored. The value of −52.5 kJ mol−1 was ascertained as the molar differential adsorption heat at the low surface coverage (cca 0.2 mmol g−1) of the sample of microporous carbon. As the adsorption process continues, for adsorption uptakes exceeding the value of
about 1 mmol g−1, molar differential adsorption heats appear to be established at a level of about −20 + 5 kJ mol−1. 相似文献
16.
Dao-Lai Fang Bing-Cai Wu Yong Yan Ai-Qin Mao Cui-Hong Zheng 《Journal of Solid State Electrochemistry》2012,16(1):135-142
Mesoporous Mn–Ni oxides with the chemical compositions of Mn1-x
Ni
x
O
δ
(x = 0, 0.2, and 0.4) were prepared by a solid-state reaction route, using manganese sulfate, nickel chloride, and potassium
hydroxide as starting materials. The obtained Mn–Ni oxides, mainly consisting of the phases of α- and γ-MnO2, presented irregular mesoporous agglomerates built from ultra-fine particles. Specific surface area of Mn1–x
Ni
x
O
δ
was 42.8, 59.6, and 84.5 m2 g−1 for x = 0, 0.2, and 0.4, respectively. Electrochemical properties were investigated by cyclic voltammetry and galvanostatic charge/discharge
in 6 mol L−1 KOH electrolyte. Specific capacitances of Mn1-x
Ni
x
O
δ
were 343, 528, and 411 F g−1 at a scan rate of 2 mV s−1 for x = 0, 0.2, and 0.4, respectively, and decreased to 157, 183, and 130 F g−1 with increasing scan rate to 100 mV s−1, respectively. After 500 cycles at a current density of 1.24 A g−1, the symmetrical Mn1–x
Ni
x
O
δ
capacitors delivered specific capacitances of 160, 250, and 132 F g−1 for x = 0, 0.2, and 0.4, respectively, retaining about 82%, 89%, and 75% of their respective initial capacitances. The Mn0.8Ni0.2O
δ
material showed better supercapacitive performance, which was promising for supercapacitor applications. 相似文献
17.
Márcia F. Mesko Paola A. Mello Cezar A. Bizzi Valderi L. Dressler Guenter Knapp Érico M. M. Flores 《Analytical and bioanalytical chemistry》2010,398(2):1125-1131
Iodine determination in food samples was performed by inductively coupled plasma mass spectrometry (ICP-MS) after digestion
by microwave-induced combustion (MIC). Sample masses up to 500 mg of bovine liver, corn starch, milk powder, or wheat flour
were completely combusted using the MIC system. Ammonium nitrate (6 mol l−1 solution, 50 μl) was used as an aid for ignition and vessels were charged with 15 bar of O2. The use of H2O, 0.9 mmol l−1 H2O2, 10 to 50 mmol l−1 (NH4)2CO3 and 56 mmol l−1 tetramethylammonium hydroxide was investigated as absorbing solutions, as well as the suitability of performing a reflux
step after the combustion process. Digestion of food samples by pressurized microwave-assisted acid digestion, microwave-assisted
extraction and conventional extraction of iodine in alkaline solution were also evaluated. Iodine recoveries higher than 99%
were obtained using MIC and 50 mmol l−1 (NH4)2CO3 or 56 mmol l−1 tetramethylammonium hydroxide as absorbing solution and with 5 min for the reflux step. Accuracy was evaluated using certified
reference materials (bovine muscle, corn bran, and milk powder) and agreement better than 97% was obtained. The limit of quantification
by MIC and further ICP-MS determination was 0.002 μg g−1. Blanks were always low and no memory effects were observed. Digestion by MIC allowed the processing of up to eight samples
by each run in 25 min with high efficiency of digestion (residual carbon content lower than 1%) providing a suitable medium
for further iodine determination by ICP-MS. 相似文献
18.
Grace O. Ogunlusi Jide Ige Olayinka A. Oyetunji Jonathan F. Ojo 《Transition Metal Chemistry》2009,34(5):483-491
The kinetics of the reactions between azido-pentacyanocobaltate(III), Co(CN)5N3
3−, and iron(II) polypyridyl complexes, Fe(LL)3
2+ (LL = bipy, phen), have been studied in both neutral and acidic aqueous solutions at I = 0.1 mol dm−3 NaCl. The reactions were carried out under pseudo-first-order conditions in which the concentration of Fe(LL)3
2+ was kept constant, and the second-order rate constants obtained for the reactions at 35 °C were within the range of 0.156–0.219
dm3 mol−1 s−1 for LL = bipy and 0.090–0.118 dm3 mol−1 s−1 for LL = phen. Activation parameters were measured for these systems. The dependence of reaction rates on acid was studied
in the range [H+] = 0.001–0.008 mol dm−3. The reaction in acid medium shows interesting kinetics. Two reactive species were identified in acid medium, namely, the
protonated cobalt complex and the azido-bridged binuclear complex. The electron-transfer process is proposed to go by mixed
outer- and inner-sphere mechanisms in acid medium, in which electron transfer through the bridged inner-sphere complex (k
5) is slower than through the outer-sphere path (k
4).
Electronic supplementary material The online version of this article (doi:) contains supplementary material, which is available to authorized users. 相似文献
19.
Florin Bucatariu Frank Simon Gheorghe Fundueanu Ecaterina Stela Dragan 《Colloid and polymer science》2011,289(1):33-41
Synthesis of small oligopeptide brushes (oligo(S-benzyl-l-cysteine)) onto polyelectrolyte functionalized silica microparticles was developed. Poly(vinyl amine) (PVAm) adsorbed from
salt-free and KCl 10−1 mol L−1 aqueous solution onto silica microparticles was chemically and naturally cross-linked by epichlorohydrin and CO2, respectively. After the adsorption of PVAm onto microporous silica particles and stabilization by cross-linking, five repeated
coupling reactions of Boc-S-benzyl-l-cysteine were performed. To test the protein interactions with the newly designed surface, human serum albumin (HSA) has
been selected as a model protein. X-ray photoelectron spectroscopy, total organic carbon, potentiometric and polyelectrolyte
titrations, and electrokinetic analysis were employed to obtain information about the polyelectrolyte adsorption and the amount
of the amino acid S-benzyl-l-cysteine that was covalently bound to the solid surface and for determination of the protein amount adsorbed onto functionalized
surface. The amount of HSA adsorbed onto modified silica microparticles decreased in order: silica/PVAm-cross-linked (silica/PVAm-C)
(8.00 mg g−1) > silica/PVAm-C/S-benzyl-l-cysteine (6.34 mg g−1) > silica (4.86 mg g−1) > silica/PVAm-C/(S-benzyl-l-cysteine)5 (1.86 mg g−1). 相似文献
20.
Minglei Tian Hyung Sang Row Kyung Ho Row 《Monatshefte für Chemie / Chemical Monthly》2010,400(8):285-290