Sequential combined adsorption and solid-phase photocatalysis to remove aqueous organic pollutants by H3PO4-modified TiO2 nanoparticles anchored on biochar

2022 ◽  
Vol 45 ◽  
pp. 102467
Author(s):  
Chuanfu Song ◽  
Kunyuan Chen ◽  
Mingxin Chen ◽  
Xin Jin ◽  
Guangrong Liu ◽  
...  
Keyword(s):  
Tio2 Nanoparticles ◽  
Organic Pollutants ◽  
Solid Phase

Gas-Cycle-Assisted Headspace Solid-Phase Microextraction Coupling with Gas Chromatography for Rapid Analysis of Organic Pollutants

2021 ◽  
Author(s):  
Wenli Zhu ◽  
Peige Qin ◽  
Lizhen Han ◽  
Xiaowan Zhang ◽  
Dan Li ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Organic Pollutants ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Rapid Analysis ◽  
Headspace Solid Phase Microextraction ◽  
Boiling Points

Herein, a new gas-cycle-assisted (GCA) headspace solid-phase microextraction (HS-SPME) device was designed to rapidly extract organic pollutants with high Kow and boiling points that have difficulty in volatilization from matrix...

In-tube solid-phase microextraction coupled by in valve mode to capillary LC-DAD: Improving detectability to multiresidue organic pollutants analysis in several whole waters

2010 ◽  
Vol 1217 (16) ◽  
pp. 2695-2702 ◽  
Author(s):  
P. Campíns-Falcó ◽  
J. Verdú-Andrés ◽  
A. Sevillano-Cabeza ◽  
R. Herráez-Hernández ◽  
C. Molins-Legua ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Solid Phase Microextraction ◽  
Solid Phase

scholarly journals In Situ Miniaturised Solid Phase Extraction (m-SPE) for Organic Pollutants in Seawater Samples

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
B. Abaroa-Pérez ◽  
G. Sánchez-Almeida ◽  
J. J. Hernández-Brito ◽  
D. Vega-Moreno
Keyword(s):  
Solid Phase Extraction ◽  
Organic Pollutants ◽  
Marine Environment ◽  
Persistent Organic Pollutants ◽  
Solid Phase ◽  
In Situ Monitoring ◽  
Phase Extraction ◽  
Polycyclic Aromatic ◽  
Seawater Samples

Solid phase extraction (SPE) is a consolidated technique for determining pollutants in seawater samples. The current tendency is to miniaturise systems that extract and determine pollutants in the environment, reducing the use of organic solvents, while maintaining the quality in the extraction and preconcentration. On the other hand, there is a need to develop new extraction systems that can be fitted to in situ continual monitoring buoys, especially for the marine environment. This work has developed a first model of a low-pressure micro-SPE (m-SPE) for persistent organic pollutants (POPs) that can be simply applied to in situ monitoring in the marine environment. This system reduces the volumes of sample and solvents required in the laboratory in comparison with conventional SPE. In the future, it could be used in automated or robotic systems in marine technologies such as marine gliders and oceanographic buoys. This system has been optimised and validated to determine polycyclic aromatic hydrocarbons (PAH) in seawater samples, but it could also be applied to other kinds of persistent organic pollutants (POPs) and emerging pollutants.

Adsorption of Organic Pollutants in Wastewater using Solid Phase Extraction Absorbent from Agro-Waste

2019 ◽  
Vol 7 (2) ◽  
pp. 245-253 ◽  
Author(s):  
Wan Norfazilah Wan Ismail ◽  
Dzul Iskandar Muhammad Fauzi ◽  
Nurlin Abu Samah
Keyword(s):  
Solid Phase Extraction ◽  
Organic Pollutants ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Sample Volume ◽  
Wastewater Sample ◽  
Phase Extraction ◽  
Nano Powder ◽  
Optimum Parameters ◽  
Limit Of Quantitation

A rapid solid phase extraction (SPE) combined with gas chromatography equipped with mass spectrometry (GC-MS) method was developed and validated for the determination of acenaphthylene, acenaphthene and naphthalene in wastewater sample collected from petroleum industry’s drainage. Important SPE parameters, namely absorbent amount, sample volume, type of elution solvent and its volume were optimized. The optimum parameters obtained are: 200 mg silica nano-powder, 2.0 mL sample volume and 2.0 mL n-hexane as elution solvent. The method showed good linearity in the range of 0.1-10.0 mg/L with satisfactory limit of detection (≤1.0 mg/L) and limit of quantitation (≤3.2 mg/L) under the optimized conditions. Good relative recoveries (94.7-99.9%) and intra- and inter-day precisions (≤2.8%, n=3) for acenaphthene, acenaphthylene and naphthalene were obtained. Toxicity study has revealed that it is a non-toxic absorbent and safe to be used for the removal of organic pollutants in water which is advantageous for routine wastewater analysis.

scholarly journals Considerations on the application of miniaturized sample preparation approaches for the analysis of organic compounds in environmental matrices

2012 ◽  
Vol 10 (3) ◽  
pp. 433-449 ◽  
Author(s):  
Francisco Pena-Pereira ◽  
Regina Duarte ◽  
Armando Duarte
Keyword(s):  
Organic Matter ◽  
Sample Preparation ◽  
Organic Pollutants ◽  
Environmental Samples ◽  
Solid Phase ◽  
Analytical Techniques ◽  
Environmental Research ◽  
Environmental Matrices ◽  
Selective Enrichment ◽  
Target Analytes

AbstractThe miniaturization and improvement of sample preparation is a challenge that has been fulfilled up to a point in many fields of analytical chemistry. Particularly, the hyphenation of microextraction with advanced analytical techniques has allowed the monitoring of target analytes in a vast variety of environmental samples. Several benefits can be obtained when miniaturized techniques such as solid-phase microextraction (SPME) or liquid-phase microextraction (LPME) are applied, specifically, their easiness, rapidity and capability to separate and pre-concentrate target analytes with a negligible consumption of organic solvents. In spite of the great acceptance that these green sample preparation techniques have in environmental research, their full implementation has not been achieved or even attempted in some relevant environmental matrices. In this work, a critical review of the applications of LPME and SPME techniques to isolate and pre-concentrate traces of organic pollutants is provided. In addition, the influence of the environmental matrix on the effectiveness of LPME and SPME for isolating the target organic pollutants is addressed. Finally, unsolved issues that may hinder the application of these techniques for the extraction of dissolved organic matter from environmental samples and some suggestions for developing novel and less selective enrichment and isolation procedures for natural organic matter on the basis of SPME and LPME are included.

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