PubAg

Main content area

You searched for: Subject "sorbents" Remove constraint Subject: "sorbents"
Start Over

Search

3,382  Search Results

« Previous | 1 - 20 of 3,382 |
Number of results to display per page

Search Results

1. Dispersive micro-solid phase extraction

Author:
Chisvert, Alberto; Cárdenas, Soledad; Lucena, Rafael
Source:
Trends in analytical chemistry 2019 v.112 pp. 226-233
ISSN:
0165-9936
Subject:
sorbents,   etc   ; automation; solvents; sorption;     Show all 4 Subjects
Abstract:
... Dispersive micro-solid phase extraction (D-μSPE) has gained special attention in the sample preparation process due to its simplicity, speed and efficiency. Different dispersion approaches have been used within this technique to allow a close contact between the sorbent and the donor sample solution during the entrapping step, but also between the sorbent and the solvent in the elution step. This ...
DOI:
10.1016/j.trac.2018.12.005

2. Zirconium bistriazolylpyridine phosphonate materials for efficient, selective An(iii)/Ln(iii) separations

Author:
Veliscek-Carolan, Jessica; Rawal, Aditya
Source:
Chemical communications 2019 v.55 no.8 pp. 1168-1171
ISSN:
1364-548X
Subject:
sorbents,   etc   ; chemical reactions; ligands; phosphonates; zirconium;     Show all 5 Subjects
Abstract:
... Direct synthesis of ZrCl₄ and bistriazolylpyridine phosphonate has produced novel sorbent materials that, for the first time, demonstrate selective extraction of Am(iii) in the presence of excess Eu(iii). Further, the high ligand content of these materials affords them high extraction efficiencies. ...
DOI:
10.1039/c8cc07892k

3. Fluidized particles in flow analysis: potentialities, limitations and applications

Author:
Dias, Tuanne R.; Melchert, Wanessa R.; Kamogawa, Marcos Y.; Rocha, Fábio R.P.; Zagatto, Elias A.G.
Source:
Talanta 2018 v.184 pp. 325-331
ISSN:
0039-9140
Subject:
sorbents,   etc   ; adsorption; catalysts; geometry;     Show all 4 Subjects
Abstract:
... In flow analysis, solid particles (sorbents, reagents or catalysts) have been used for e.g. analyte separation/concentration, sample clean-up, speciation analysis, enzymatic assays, analysis relying on slight soluble reagents, and kinetics studies related to adsorption/release of species. The particles are usually accommodated inside packed-bed mini-columns, cartridges or disks, but this geometry ...
DOI:
10.1016/j.talanta.2018.02.072

4. Synthesis of freestanding amorphous giant carbon tubes with outstanding oil sorption and water oxidation properties

Author:
Chen, Jiafu; Shen, Xiaochen; Pan, Yanbo; Liu, Chang; Hwang, Sang Youp; Xu, Qun; Peng, Zhenmeng
Source:
Journal of materials chemistry 2018 v.6 no.9 pp. 3996-4002
ISSN:
2050-7496
Subject:
sorbents,   etc   ; carbon; oils; oxidation; sorption;     Show all 5 Subjects
Abstract:
... Giant carbon tubes (GCTs) have emerged as a new group of carbon-based material which can exhibit many interesting properties benefiting from the unique physicochemical structure and thus have aroused increasing research interest. Herein, we report a new templated growth approach for the scalable synthesis of amorphous GCTs, which had uniform wall thickness and were ultra-long in length, with the l ...
DOI:
10.1039/c7ta09822g

5. Characterization of the accumulation of metals and organic contaminants on a novel active-passive sampling device under controlled water flow conditions

Author:
Amato, Elvio D.; Nguyen, Dung T.; Subotic, Dragan; Hereijgers, Jonas; Breugelmans, Tom; Weyn, Maarten; Dardenne, Freddy; Bervoets, Lieven; Covaci, Adrian; Town, Raewyn M.; Blust, Ronny
Source:
Chemosphere 2019 v.236 pp. 124400
ISSN:
0045-6535
Subject:
sorbents,   etc   ; hydrodynamics; laboratory experimentation; metals; monitoring; water flow; water pollution;     Show all 7 Subjects
Abstract:
... Recently, a new sampling device combining active and passive sampling (APS) was developed for the measurement of time-averaged concentrations of metal species and both polar and non-polar organic contaminants in water. By coupling a diffusion cell (loaded with a set of sorbents selective for different substances) with a small pump and a flow meter, the APS device is able to perform in situ measure ...
DOI:
10.1016/j.chemosphere.2019.124400

6. Evaluation of the tubing material and physical dimensions on the performance of extraction columns for on-line sample preparation-LC–MS/MS

Author:
de Toffoli, Ana Lúcia; Maciel, Edvaldo Vasconcelos Soares; Lanças, Fernando Mauro
Source:
Journal of chromatography 2019 v.1597 pp. 18-27
ISSN:
0021-9673
Subject:
sorbents,   etc   ; humans; liquid chromatography; silica; steel; tandem mass spectrometry;     Show all 6 Subjects
Abstract:
... Nowadays, high analytical throughputs are required considering an increasing demand for faster, simple and improved methods to analyze contaminants in a considerable number of samples. Generally, these compounds are present in complex matrices in contact with a high number of interferents becoming their determination difficult at low concentration. In this context, on-line extraction techniques ar ...
DOI:
10.1016/j.chroma.2019.03.023

7. Biocompatible functionalisation of nanoclays for improved environmental remediation

Author:
Biswas, Bhabananda; Warr, Laurence N.; Hilder, Emily F.; Goswami, Nirmal; Rahman, Mohammad M.; Churchman, Jock G.; Vasilev, Krasimir; Pan, Gang; Naidu, Ravi
Source:
Chemical Society reviews 2019 v.48 no.14 pp. 3740-3770
ISSN:
1460-4744
Subject:
sorbents,   etc   ; biocompatibility; biodegradation; dispersants; ecosystems; nanoclays; nanoparticles; pollution; remediation; surfactants;     Show all 10 Subjects
Abstract:
... Among the wide range of materials used for remediating environmental contaminants, modified and functionalised nanoclays show particular promise as advanced sorbents, improved dispersants, or biodegradation enhancers. However, many chemically modified nanoclay materials are incompatible with living organisms when they are used in natural systems with detrimental implications for ecosystem recovery ...
DOI:
10.1039/c8cs01019f

8. Adsorption of Lead on Lentil Husk in Fixed Bed Column Bioreactor

Author:
Basu, Mousumi; Guha, Arun K.; Ray, Lalitagauri
Source:
Bioresource technology 2019 v.283 pp. 86-95
ISSN:
0960-8524
Subject:
sorbents,   etc   ; adsorption; bioreactors; hulls; industrial effluents; lead; lentils; models;     Show all 8 Subjects
Abstract:
... This study depicts successful employment of fixed bed column bioreactor for adsorption of lead in continuous mode using lentil husk as sorbent. Design parameters considerably controlled the reactor performance, amongst which height of the fixed bed and flow rate were crucial in generating cleaner effluent. Adsorption capacity was found to shoot up to the level of 205.87 mg g−1 at 10 cm bed height, ...
DOI:
10.1016/j.biortech.2019.02.133

9. Green analytical methods of metals determination in biosorption studies

Author:
Chojnacka, Katarzyna; Mikulewicz, Marcin
Source:
Trends in analytical chemistry 2019 v.116 pp. 254-265
ISSN:
0165-9936
Subject:
sorbents,   etc   ; analytical methods; biomass; biosorption; metal ions; metals; moieties;     Show all 7 Subjects
Abstract:
... The paper reviews state-of-the-art in analytical methods designated for determination of metal ions bound to cellular surfaces in biosorption studies. Although there are 13 750 papers on biosorption (ISI Web of Science), none review analytical methods used to characterize this method. Biosorption is the equilibrium process, whereby metal ions are bound to functional groups (carboxyl, sulfhydryl, a ...
DOI:
10.1016/j.trac.2019.02.013

10. Microcolumn lanthanide separation using bis-(2-ethylhexyl) phosphoric acid functionalized ordered mesoporous carbon materials

Author:
Bertelsen, Erin R.; Deodhar, Gauri; Kluherz, Kyle T.; Davidson, Malcolm; Adams, Marisa L.; Trewyn, Brian G.; Shafer, Jenifer C.
Source:
Journal of chromatography 2019 v.1595 pp. 248-256
ISSN:
0021-9673
Subject:
sorbents,   etc   ; carbon; chromatography; europium; neodymium; phosphoric acid; porous media; sorption;     Show all 8 Subjects
Abstract:
... Adjacent lanthanides are among the most challenging elements to separate, to the extent that current separations materials would benefit from transformative improvement. Ordered mesoporous carbon (OMC) materials are excellent candidates, owing to their small mesh size and uniform morphology. Herein, OMC materials were physisorbed with bis-(2-ethylhexyl) phosphoric acid (HDEHP) and sorption of Eu3+ ...
DOI:
10.1016/j.chroma.2019.02.057

11. Attrition of binary mixtures of solids in a jet attrition unit

Author:
Kim, Jun Young; Ellis, Naoko; Lim, C. Jim; Grace, John R.
Source:
Powder technology 2019 v.352 pp. 445-452
ISSN:
0032-5910
Subject:
sorbents,   etc   ; air flow; carbon dioxide; iron; limestone; oxygen; powders; temperature;     Show all 8 Subjects
Abstract:
... The attrition of binary mixtures of iron powder, as a representative oxygen carrier, and limestone, as a CO2 sorbent, was investigated to examine the interactions of two different solid species. An air-jet apparatus based on ASTM D5757, with several improvements, was used to test particle attrition for various times (3, 6 and 12 h), temperatures (20, 250 and 500 °C), gas flow rates (6, 8 and 10 LP ...
DOI:
10.1016/j.powtec.2019.05.010

12. Simultaneous removal of Hg0 and H2S at a high space velocity by water-resistant SnO2/carbon aerogel

Author:
Zhang, Huawei; Zhang, Dingyuan; Wang, Juan; Xu, Wenjia; Yang, Dongjiang; Jiao, Tiantian; Zhang, Wenrui; Liang, Peng
Source:
Journal of hazardous materials 2019 v.371 pp. 123-129
ISSN:
0304-3894
Subject:
sorbents,   etc   ; aerogels; graphene; hydrogen sulfide; nanoparticles; sulfur; tin dioxide;     Show all 7 Subjects
Abstract:
... A seaweed-templated pathway was developed for the controllable synthesis of SnO2/carbon aerogel for the simultaneous removal of Hg0 and H2S in natural gases, where the SnO2 nanoparticles with an outer diameter of 4–20 nm were highly dispersed and conjoined by graphitic carbon, forming a 3D core-shell structure with a developed pore network. The synthesized sorbent performed a complete removal of H ...
DOI:
10.1016/j.jhazmat.2019.02.112

13. Pesticide residues in spices and herbs: Sample preparation methods and determination by chromatographic techniques

Author:
Parrilla Vázquez, P.; Ferrer, C.; Martínez Bueno, M.J.; Fernández-Alba, A.R.
Source:
Trends in analytical chemistry 2019 v.115 pp. 13-22
ISSN:
0165-9936
Subject:
sorbents,   etc   ; chromatography; herbs; mass spectrometry; pesticide residues; spectrometers; spices;     Show all 7 Subjects
Abstract:
... Most widely developed approaches for pesticide residues analysis in spices and herbs present serious limitations; this is because of the high number of interferences that they typically contain, which makes it difficult to identify/quantify compounds in a considerable percentage of cases. Different strategies are applied to overcome these difficulties including extensive clean-up steps, dilution o ...
DOI:
10.1016/j.trac.2019.03.022

14. Solid-Phase Detoxification of Chemical Warfare Agents using Zirconium-Based Metal Organic Frameworks and the Moisture Effects: Analyze via Digestion

Author:
Wang, Hui; Mahle, John J.; Tovar, Trenton M.; Peterson, Gregory W.; Hall, Morgan G.; DeCoste, Jared B.; Buchanan, James H.; Karwacki, Christopher J.
Source:
ACS applied materials & interfaces 2019 v.11 no.23 pp. 21109-21116
ISSN:
1944-8252
Subject:
sorbents,   etc   ; analytical methods; coordination compounds; decontamination; hydrolysis; paraoxon; thermal stability;     Show all 7 Subjects
Abstract:
... Zirconium-based metal organic frameworks (Zr-MOFs) are highly chemically and thermally stable and have been of particular interest as reactive sorbents for chemical warfare agent (CWA) removal due to their fast and selective reactivity toward CWAs reported in buffer solutions. However, we find that decontamination of neat CWAs directly on Zr-MOFs, UiO-66, UiO-66-NH₂, and NU-1000 is rather slow, an ...
DOI:
10.1021/acsami.9b04927

15. Molecularly imprinted polymers for capturing and sensing proteins: Current progress and future implications

Author:
Ansari, Saeedeh; Masoum, Saeed
Source:
Trends in analytical chemistry 2019 v.114 pp. 29-47
ISSN:
0165-9936
Subject:
sorbents,   etc   ; biomarkers; biomimetics; molecular imprinting; nanoparticles; polymers; receptors;     Show all 7 Subjects
Abstract:
... Molecular recognition plays an important role in the numerous living systems. Molecularly imprinted polymers (MIPs) are tailor-made recognition particles that can mimic biological receptors and capable of sensitively and selectively recognize specific target molecules. In recent years, application of nanoparticles as sorbent has gained the significant attention in bioanalysis field. Molecular impr ...
DOI:
10.1016/j.trac.2019.02.008

16. Tailoring Synthetic Sol–Gel CaO Sorbents with High Reactivity or High Stability for Ca-Looping CO₂ Capture

Author:
Teixeira, Paula; Hipólito, Joana; Fernandes, Auguste; Ribeiro, Filipa; Pinheiro, Carla I. C.
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.19 pp. 8484-8494
ISSN:
1520-5045
Subject:
sorbents,   etc   ; activated carbon; calcium oxide; carbon dioxide; temperature;     Show all 5 Subjects
Abstract:
... This work presents a study of the influence of sol–gel synthesis conditions on the reactivity and stability of synthetic sol–gel CaO sorbents for Ca-looping CO₂ capture. The temperature of the synthesis calcination and the amount of granular activated carbon introduced during sol–gel synthesis play key roles in the performance of sol–gel sorbents along the Ca-looping cycles. A higher initial CO₂ u ...
DOI:
10.1021/acs.iecr.8b05311

17. Immunosorbents in microextraction

Author:
Pichon, Valérie; Combès, Audrey; Delaunay, Nathalie
Source:
Trends in analytical chemistry 2019 v.113 pp. 246-255
ISSN:
0165-9936
Subject:
sorbents,   etc   ; antibodies; antigen-antibody reactions; chromatography; microextraction; quantitative analysis; solvents;     Show all 7 Subjects
Abstract:
... Trace analysis of target compounds from complex samples requires often a step of purification and of preconcentration before the chromatographic separation. Immunoaffinity sorbents functionalized with antibodies specific to the molecule(s) of interest appear as powerful tools for their selective extraction to obtain more reliable and sensitive quantitative analysis. Indeed, the high specificity an ...
DOI:
10.1016/j.trac.2019.02.016

18. Preparation of a stoichiometric molecularly imprinted polymer for auramine O and application in solid‐phase extraction

Author:
Pataer, Parezhati; Muhammad, Turghun; Turahun, Yunusjan; Yang, Wenwu; Aihebaier, Sailemayi; Wubulikasimu, Muyasier; Chen, Lingxin
Source:
Journal of separation science 2019 v.42 no.8 pp. 1634-1643
ISSN:
1615-9306
Subject:
sorbents,   etc   ; binding sites; molecular imprinting; polymers; solid phase extraction;     Show all 5 Subjects
Abstract:
... We describe a stoichiometric approach to the synthesis of molecularly imprinted polymers specific for auramine O. Using the stoichiometric interaction in molecular imprinting, no excess of binding sites is necessary and binding sites are only located inside the imprinted cavities. The free base of the template was obtained to facilitate the interaction with the monomers. Itaconic acid was selected ...
DOI:
10.1002/jssc.201801234

19. Efficiently capturing tobacco specific nitrosamines with Hβ zeolite in solution

Author:
Shi, Chun Ling; Sun, Xiao Dan; Gao, Yi Han; Zheng, Sai Jing; Li, Shuo Hao; Yang, Jing; Wang, Yang Zhong; Xiong, Jun-Wei; Shen, Yi; Wang, Ying; Zhu, Jian Hua
Source:
Journal of hazardous materials 2019 v.365 pp. 196-204
ISSN:
0304-3894
Subject:
sorbents,   etc   ; adsorption; aqueous solutions; heat; models; nitrosamines; porosity; tobacco; zeolites;     Show all 9 Subjects
Abstract:
... The high-efficiency capture of Tobacco Specific Nitrosamines by Hβ zeolite in solution is reported for the first time, along with the adsorption of 4-methylnitrosamino-1-3-pyridyl-1-butanone in aqueous solution. Different from other zeolites such as NaZSM-5, the specific pore size of Hβ exerted a crucial function endowing the zeolite a higher removal of TSNA and selectivity of NNK. The adsorption ...
DOI:
10.1016/j.jhazmat.2018.10.095

20. Dense discrete phase model simulations of CO2 capture process in a fluidized bed absorber with potassium-based solid sorbent

Author:
Wang, Shuai; Hu, Bang; Jin, Congcong; Yang, Xuesong; Zhang, Kai
Source:
Powder technology 2019 v.345 pp. 260-266
ISSN:
0032-5910
Subject:
sorbents,   etc   ; absorption; carbon dioxide; fluidized beds; powders; simulation models; temperature;     Show all 7 Subjects
Abstract:
... Chemical absorption using potassium-based sorbents is an effective method of low-temperature CO2 capture during the post-combustion process. In this work, a three-dimensional simulation is carried out to investigate the CO2 capture process with potassium-based sorbents in a fluidized bed absorber. The Dense Discrete Phase Model (DDPM) is employed to account for the effect of sorbent size distribut ...
DOI:
10.1016/j.powtec.2018.12.099