Solid phase extraction for the purification of violet, blue, green and yellow emitting carbon dots

Nanoscale ◽  
2018 ◽  
Vol 10 (24) ◽  
pp. 11293-11296 ◽  
Author(s):  
Apostolos Koutsioukis ◽  
Antonios Akouros ◽  
Radek Zboril ◽  
Vasilios Georgakilas
Keyword(s):  
Solid Phase Extraction ◽  
Carbon Dots ◽  
Solid Phase ◽  
Low Cost ◽  
Phase Extraction

We describe the efficient purification of violet, blue, green and yellow emitting C-dots using a fast, low cost and scalable procedure based on solid phase extraction with alumina.

Application of a Zn(ii) based metal–organic framework as an efficient solid-phase extraction sorbent for preconcentration of plasticizer compounds

RSC Advances ◽  
2016 ◽  
Vol 6 (46) ◽  
pp. 40211-40218 ◽  
Author(s):  
Elham Tahmasebi ◽  
Mohammad Yaser Masoomi ◽  
Yadollah Yamini ◽  
Ali Morsali
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Phase Extraction ◽  
Metal Organic ◽  
Organic Framework

A solid-phase extraction (SPE) sorbent, a Zn(ii) based metal–organic framework, was prepared via a simple, solventless, green and a low-cost mechanosynthesis process.

Application and Development of Molecularly Imprinted Polymer to Solid Phase Extraction

2013 ◽  
Vol 781-784 ◽  
pp. 1359-1365 ◽  
Author(s):  
Yin Zhe Jin ◽  
Yun Zhe Jin ◽  
Ji Yu Piao ◽  
Ying Shan Jin ◽  
Yong Hao Xuan
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Specific Binding ◽  
Low Cost ◽  
Enzyme Mechanism ◽  
Phase Extraction ◽  
Imprinted Polymer ◽  
Reliable Technique ◽  
Molecularly Imprinted ◽  
Natural Substances

Recently, molecularly imprinted solid phase extraction (MISPE) has been used more frequently separate drugs and natural substances. This modern separation methodologies require reliable tools that perform on a high level in terms of efficiency and reproducibility. The molecular imprinting technique is a reliable technique for the preparation of materials of predetermined selectivity. It is highly significant in research of the structure of enzyme, mechanism of receptor-antibody and analytical chemistry. Solid phase extraction can be used to isolate and pre-concentrate the analytes in complex samples. This technique is more rapid, simple, economical and environment-friendly than the traditional liquid-liquid extraction. The materials used in SPE are usually based on the non-specific binding of the targets, which often suffers some shortcomings, such as low specificity and selectivity. In recent years, solid phase extraction involving molecular imprinted polymer have been proved to be successful applications for its features of high selectivity, ease of synthesis, low cost for preparation and workability under different conditions especially that of harsh pH and organic solvents. In this work, the principles, application and development tends of MISPE will be reviewed and the disadvantages and limitation of the MISPE and future development direction are also briefly discussed.

Simple Solid-Phase Extraction Method for High Efficiency and Low-Cost Crude Oil Demulsification

2016 ◽  
Vol 30 (6) ◽  
pp. 4667-4675 ◽  
Author(s):  
Karen M. Higa ◽  
Augusto Guilhen ◽  
Luis C. S. Vieira ◽  
Rogério M. Carvalho ◽  
Ronei J. Poppi ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Crude Oil ◽  
Extraction Method ◽  
High Efficiency ◽  
Solid Phase ◽  
Low Cost ◽  
Phase Extraction

Modified Magnetic Nanoparticle-Based Solid-Phase Extraction for the Determination of Trace Amounts of Aflatoxins B1 and B2 in Chinese Patent Medicines: The Use of Fupuganmao Granules as a Case Study

2019 ◽  
Vol 102 (3) ◽  
pp. 761-766 ◽  
Author(s):  
Qing Li ◽  
Luyi Jiang ◽  
Huan Zhang ◽  
Mengmeng Wei ◽  
Chu Chu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Magnetic Nanoparticle ◽  
Solid Phase ◽  
Low Cost ◽  
Phase Extraction ◽  
Chromatography Method ◽  
Patent Medicines ◽  
Functionalized Magnetic Nanoparticles ◽  
Chinese Patent

Abstract Background: Aflatoxins (AFs) have attracted increasing amounts of attention in recent years for their high toxicity. Previously, AF-polluted Chinese Patent Medicines (CPMs) were ignored, but their quality, safety, and efficacy might be influenced by the toxic compounds. Objective: The objective is to develop a simple, low-cost, and efficient method for quantitative analysis of aflatoxins B1 (AFB1) and B2 (AFB2) in CPMs to ensure their safe use. Methods: A simple, modified, magnetic nanoparticle-based solid-phase extraction (SPE) combined with HPLC-fluorescence detection for the determination of trace amounts of AFB1 and AFB2 was established. The main parameters affecting the efficiency of modified magnetic nanoparticle-based SPE, such as pH of sample solution, adsorbent amount, adsorption time, and desorption condition, were investigated. Results: Under the optimum conditions, AFB1 and AFB2 were linear in the ranges of 0.3–10 and 0.04–3 ng/mL with the correlation coefficient (R) of 0.9998 and 0.9999, respectively. Their intraday precisions were 1.16 and 2.30% and the interday precisions were 1.28 and 1.87% for AFB1 and AFB2, respectively. The developed SPE was applied for AFB1 and AFB2 extraction in three commercially available Fupuganmao granule samples, and the results were compared with the official immunoaffinity column chromatography method. Conclusions: The method provided a preferable candidate for the determination approach of AF measurement in CPMs. Highlights: Amine-functionalized magnetic nanoparticles were successfully applied to SPE for adsorbing AFB1 and AFB2 in CPMs for the first time.

Low-cost humic acid-bonded silica as an effective solid-phase extraction sorbent for convenient determination of aflatoxins in edible oils

2017 ◽  
Vol 970 ◽  
pp. 38-46 ◽  
Author(s):  
Neng-Zhi Zhou ◽  
Ping Liu ◽  
Xiao-Chuan Su ◽  
Yan-Hua Liao ◽  
Ning-Sheng Lei ◽  
...  
Keyword(s):  
Humic Acid ◽  
Solid Phase Extraction ◽  
Edible Oils ◽  
Solid Phase ◽  
Low Cost ◽  
Phase Extraction
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