Dispersive Solid-Phase Extraction Based on Magnetic Dummy Molecularly Imprinted Microspheres for Selective Screening of Phthalates in Plastic Bottled Beverages

2014 ◽  
Vol 62 (13) ◽  
pp. 2782-2789 ◽  
Author(s):  
Jindong Qiao ◽  
Mingyu Wang ◽  
Hongyuan Yan ◽  
Gengliang Yang
Keyword(s):  
Solid Phase Extraction ◽  
Solid Phase ◽  
Phase Extraction ◽  
Selective Screening ◽  
Dispersive Solid Phase Extraction ◽  
Molecularly Imprinted ◽  
Molecularly Imprinted Microspheres

scholarly journals Development of Surface Molecularly Imprinted Polymers as Dispersive Solid Phase Extraction Coupled with HPLC Method for the Removal and Detection of Griseofulvin in Surface Water

2019 ◽  
Vol 17 (1) ◽  
pp. 134 ◽  
Author(s):  
Kamran Bashir ◽  
Zhimin Luo ◽  
Guoning Chen ◽  
Hua Shu ◽  
Xia Cui ◽  
...  
Keyword(s):  
Surface Water ◽  
Solid Phase Extraction ◽  
Molecularly Imprinted Polymers ◽  
Water Samples ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Surface Water Samples

Griseofulvin (GSF) is clinically employed to treat fungal infections in humans and animals. GSF was detected in surface waters as a pharmaceutical pollutant. GSF detection as an anthropogenic pollutant is considered as a possible source of drug resistance and risk factor in ecosystem. To address this concern, a new extraction and enrichment method was developed. GSF-surface molecularly imprinted polymers (GSF-SMIPs) were prepared and applied as solid phase extraction (SPE) sorbent. A dispersive solid phase extraction (DSPE) method was designed and combined with HPLC for the analysis of GSF in surface water samples. The performance of GSF-SMIPs was assessed for its potential to remove GSF from water samples. The factors affecting the removal efficiency such as sample pH and ionic strength were investigated and optimized. The DSPE conditions such as the amount of GSF-SMIPs, the extraction time, the type and volume of desorption solvents were also optimized. The established method is linear over the range of 0.1–100 µg/mL. The limits of detection and quantification were 0.01 and 0.03 µg/mL respectively. Good recoveries (91.6–98.8%) were achieved after DSPE. The intra-day and inter-day relative standard deviations were 0.8 and 4.3% respectively. The SMIPs demonstrated good removal efficiency (91.6%) as compared to powder activated carbon (67.7%). Moreover, the SMIPs can be reused 10 times for water samples. This is an additional advantage over single-use activated carbon and other commercial sorbents. This study provides a specific and sensitive method for the selective extraction and detection of GSF in surface water samples.

Determination of active ingredients in Chinese medicine Danning Tablets using dispersion solid-phase extraction by molecular imprinting nanomaterials coupled with HPLC-DAD

2017 ◽  
Vol 9 (17) ◽  
pp. 2585-2589 ◽  
Author(s):  
Jieping Luo ◽  
Ning Chen ◽  
Zaiyue Yang ◽  
Jiyong Han ◽  
Wanying Zhu ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Molecularly Imprinted Polymers ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Pretreatment Method ◽  
Magnetic Molecularly Imprinted Polymers

A reliable pretreatment method of magnetic molecularly imprinted polymers/dispersive solid-phase extraction was developed for selectivity and enrichment of targets.

Solid-phase extraction of ursolic acid from herb using β-cyclodextrin-based molecularly imprinted microspheres

2008 ◽  
Vol 31 (20) ◽  
pp. 3573-3580 ◽  
Author(s):  
Hanmao Liu ◽  
Chunhai Liu ◽  
Xiaojing Yang ◽  
Songjun Zeng ◽  
Yuanqin Xiong ◽  
...  
Keyword(s):  
Solid Phase Extraction ◽  
Ursolic Acid ◽  
Solid Phase ◽  
Phase Extraction ◽  
Molecularly Imprinted ◽  
Molecularly Imprinted Microspheres
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