Eco-friendly environmental trace analysis of thorium using a new supramolecular solvent-based liquid-liquid microextraction combined with spectrophotometry

2018 ◽  
Vol 142 ◽  
pp. 102-107 ◽  
Author(s):  
Ayman A. Gouda ◽  
Manal S. Elmasry ◽  
Hisham Hashem ◽  
Heba M. EL-Sayed
Keyword(s):  
Trace Analysis ◽  
Environmental Trace Analysis ◽  
Supramolecular Solvent ◽  
Liquid Microextraction

Supramolecular Solvent Based Liquid-Liquid Microextraction for Preconcentration of Selected Fluoroquinolone Antibiotics in Environmental Water Sample Prior to High Performance Liquid Chromatographic Determination

2019 ◽  
Vol 15 (6) ◽  
pp. 607-615 ◽  
Author(s):  
Shirley K. Selahle ◽  
Philiswa N. Nomngongo
Keyword(s):  
High Performance ◽  
Chromatographic Determination ◽  
Decanoic Acid ◽  
Environmental Water ◽  
High Performance Liquid Chromatographic ◽  
Array Detector ◽  
Optimum Conditions ◽  
Limit Of Quantification ◽  
Supramolecular Solvent ◽  
Liquid Microextraction

Background and Objective: A rapid, simple and environmental friendly supramolecular solvent (SUPRAS) based liquid-liquid microextraction method for preconcentration of ciprofloxacin (CIPRO), danofloxacin (DANO) and enrofloxacin (ENRO) from wastewater was developed. Methods: This microextraction technique was coupled with high-performance liquid chromatography equipped with a diode array detector (HPLC-PDA) for detection and separation of the antibiotics. The SUPRAS composed of decanoic acid and tricaprylymethylammonium chloride. Optimum conditions for the extraction and preconcentration of all the antibiotics were obtained using surface response methodology (RSM) based on Box-Behnken design. Results: Under optimum conditions, the limits of detection (LOD) and limit of quantification (LOQ) ranged from 0.06-0.14 µg L−1 and 0.22-0.47 μg L−1, respectively with the preconcentration factors ranging from 153-241. The linear dynamic ranges were between LOQ and 850 µg L−1 with correlation coefficients ranging from 0.9928 to 0.9999. The intra-day (n = 15) and inter-day (n = 5) precisions (expressed in terms of %RSD) for 50 µg L−1 of CIPRO, DANO and ENRO were in the range of 3.3–4% and 4.1–5.8%, respectively. Conclusion: Lastly, the developed method was used for the extraction, preconcentration and quantification of selected CIPRO, DANO and ENRO in influent and effluent wastewater samples.

Methods for Environmental Trace Analysis

2004 ◽  
Vol 30 (4) ◽  
pp. 603-604
Author(s):  
Dr.Eric Aries
Keyword(s):  
Trace Analysis ◽  
Environmental Trace Analysis

Application of supramolecular solvent-based dispersive liquid–liquid microextraction for trace monitoring of lead in food samples

2016 ◽  
Vol 8 (27) ◽  
pp. 5533-5539 ◽  
Author(s):  
Ayoob Rastegar ◽  
Ahmad Alahabadi ◽  
Ali Esrafili ◽  
Zahra Rezai ◽  
Ahmad Hosseini-Bandegharaei ◽  
...  
Keyword(s):  
Flow Injection ◽  
Flame Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Treatment Method ◽  
Food Samples ◽  
Sample Treatment ◽  
Flame Atomic Absorption ◽  
Supramolecular Solvent ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

An efficient sample treatment method based on supramolecular solvent-based dispersive liquid–liquid microextraction was applied for trace monitoring of lead by flow injection flame atomic absorption spectrometry.

Supramolecular solvent microextraction of gold prior to its determination by microsample injection system coupled with flame atomic absorption spectrometry

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47396-47401 ◽  
Author(s):  
Erkan Yilmaz ◽  
Mustafa Soylak
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Injection System ◽  
Flame Atomic Absorption ◽  
Supramolecular Solvent ◽  
Atomic Absorption Spectrometric ◽  
Liquid Microextraction

A supramolecular solvent based liquid–liquid microextraction (SsLLME) system for gold was developed prior to its determination by a microsample injection system coupled with flame atomic absorption spectrometric (MS-FAAS).

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