Application of molecularly imprinted solid‐phase extraction coupled with liquid chromatography method for detection of penicillin G in pasteurised milk samples

2021 ◽  
Author(s):  
Abbas Pourtaghi ◽  
Arash Mohammadinejad ◽  
Mitra Asgharian Rezaee ◽  
Mohammad Reza Saberi ◽  
Vahideh Sadat Motamedshariaty ◽  
...  
Keyword(s):  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Penicillin G ◽  
Phase Extraction ◽  
Chromatography Method ◽  
Molecularly Imprinted ◽  
Milk Samples ◽  
Liquid Chromatography Method

Aquatic Products Determination of Nonylphenol and Octylphenol

2013 ◽  
Vol 340 ◽  
pp. 388-391 ◽  
Author(s):  
Xiang Ke Cao ◽  
Qing Zeng Qian ◽  
Jun Wang Tong ◽  
Qian Wang
Keyword(s):  
High Performance Liquid Chromatography ◽  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
High Performance ◽  
Solid Phase ◽  
Phase Extraction ◽  
Chromatography Method ◽  
Aquatic Product ◽  
Liquid Chromatography Method

By solid - phase extraction high performance liquid chromatography determination of nonylphenol, Octylphenol in aquatic product residues, to establish more accurate, fast, effective detection method. Sample is 3 trichloroacetic acid solution after extraction, using anion exchange solid phase extraction column purification by reversed phase high performance liquid chromatography method for determination. Column is Shim-pack VP-ODS 250mm x4.6mm, detection wavelength is225 nm, mobile phase of methanol - water ( volume ratio of 75:25), flow rate is 0.8 mL/min, injection volume is 20 ìL. Octylphenol, nonylphenol respectively in 0.14¡«97.63 ìg/mL ( R=0.9995),0.02¡«51.04 ì g/mL ( R=0.9997) concentration and peak area show a good linear relationship, octylphenol nonylphenol and the recovery is 87.9%¡«93.8%, relative standard deviation is 1.4%¡«3.8%. Solid - phase extraction high performance liquid chromatography method for determination of aquatic product of octylphenol and nonylphenol residue is accurate, rapid, high sensitivity, suitable for aquatic products of octylphenol nonylphenol and detection.

scholarly journals Application of a solid phase extraction-liquid chromatography method to quantify phenolic compounds in woodwaste leachate

2014 ◽  
Vol 49 (3) ◽  
pp. 210-222 ◽  
Author(s):  
Najat Kamal ◽  
Rosa Galvez ◽  
Gerardo Buelna
Keyword(s):  
Liquid Chromatography ◽  
Phenolic Compounds ◽  
Solid Phase Extraction ◽  
Solid Phase ◽  
Noise Analysis ◽  
Phase Extraction ◽  
Chromatography Method ◽  
Synthetic Solution ◽  
High Concentrations ◽  
Liquid Chromatography Method

Woodwaste produces large volumes of leachate, which often contains high concentrations of phenolic compounds. These compounds are environmental contaminants whose proper management and treatment are mandated to reduce associated environmental impacts. Quality diagnostic and treatment efficiency assessments necessitate the development of rapid, accurate, and reproducible methods of detection and analysis to accurately quantify phenolic compounds. Liquid chromatography (LC) analysis with ultraviolet (UV) detection and solid-phase extraction (SPE) sample preparation on Oasis HLB cartridges were performed and adapted to quantify eight priority phenolic compounds in woodwaste leachate. The method was validated on a synthetic solution simulating the woodwaste leachate, on spiked real woodwaste leachate to 1 μg mL−1, and applied to quantify phenolic compounds in the real woodwaste leachate. Calibration curves were linear for all compounds in the range of 1–30 μg mL−1, and high recoveries varying between 93.5% for 2-chlorophenol and 112.8% for 4-nitrophenol were obtained. Detection limits ranged from 0.06 μg L−1 for 2-chlorophenol to 0.129 μg L−1 for phenol. The proposed method reduced interference, background noise, analysis time, amount of organic solvents and is less costly when compared with other methods.

Analysis of Cyanazine and Atrazine in Cucumber by Pseudo Imprinted Solid-Phase Extraction Coupled with Liquid Chromatography

2012 ◽  
Vol 503-504 ◽  
pp. 289-292
Author(s):  
Hong Yuan Yan ◽  
Zhi Wei Li ◽  
Jing Yu Zhang ◽  
Chang Qing He
Keyword(s):  
Liquid Chromatography ◽  
Solid Phase Extraction ◽  
High Performance ◽  
Solid Phase ◽  
Bulk Polymerization ◽  
Phase Extraction ◽  
Uv Detector ◽  
Chromatography Method ◽  
Acetic Acid Water ◽  
Liquid Chromatography Method

Two kinds of triazine herbicides (cyanazine and atrazine) in cucumber were analyzed by high performance liquid chromatography method coupled with pseudo imprinted solid-phase extraction (PISPE) as the clean-up arrays. The sorbent of PMISPE was synthesized by bulk polymerization using cyromazine as pseudo template and it could selectivly recognized cyanazine and atrazine from cucumber matrix. The mobile phase for separation and quantity analysis of cyanazine and atrazine was methanol-(0.8% acetic acid-water) (55:45, v/v) with a UV detector being set at 224 nm. The result showed that good linearity of the two trazine herbicides was obtained in a range of 0.004 µg/g ~ 0.400 µg/g with r2≥0.9996 and the recoveries at three spiked levels were ranged from 93.8% to 108.5% with RSD less than 3.4% (n=3).

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