There is a critical need for the rapid detection of -chlorophenol produced by pesticide abuse and industrial wastewater discharge, which has been an urgent problem in the realm of environmental protection. Here, a green and environmentally friendly method was developed to prepare stable and low toxicity quantum dots. First, blue-green fluorescent FeS quantum dots (B-FeS QDs) were prepared with FeCl·6HO (an iron source) and L-cysteine (a capping agent) by the solvothermal method. By combining B-FeS QDs with orange carbon dots (O-CDs), a CDs@SiO/FeS@MIPs visual fluorescence sensor for the selective detection of -chlorophenol was constructed. Under optimum conditions, this sensor exhibited a detection limit of 1.265 μM with a linear range of 5.00-50.00 μM and was successfully applied to detect -chlorophenol in real samples. Moreover, this sensor was successfully applied to visual semi-quantitative detection of -chlorophenol. This work demonstrated that these sensors, based on FeS QDs and CDs, had potentials for and visual detection of environmental contaminants.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d1ay01849c | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
An in situ reactive zone approach using calcium peroxide for the remediation of benzene and chlorobenzene in groundwater: A field study.
J Environ Manage
December 2024
State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing, 211135, China; University of Chinese Academy of Sciences, Beijing, 100049, China. Electronic address:
There is a gap in understanding the different contributions of biodegradation and free radical oxidation using calcium peroxide (CaO) for the remediation of mixed contaminants of benzene and chlorobenzene in groundwater. In this study, the remedial efficiency and mechanisms of benzene and chlorobenzene co-contaminants using CaO were explored by an integrated approach of field study and laboratory validation. It was found that in the field demonstration program, the radius of influence for each injection point using Geoprobe direct-push was larger than the designed value of 0.
View Article and Find Full Text PDFFast and effective assessment of 4-chlorophenol as a persistent organic pollutant (POP) using a multi-walled carbon nanotube-modified screen-printed carbon electrode (C/MWCNT-COOH/SPCE).
Anal Methods
December 2024
Chemistry Department, College of Science, University of Bahrain, Sakhir 32038, Bahrain.
In this study, a rapid, precise, and targeted electroanalytical method was developed for the trace determination of 4-chlorophenol (4-CP). The study reports the use of cyclic voltammetry (CV) to characterize the electrochemical response of 4-CP and the optimization of differential pulse voltammetry (DPV) settings for its sensitive quantification. Screen-printed carbon electrodes (SPCEs) were selected for the sensitive detection of 4-CP using DPV.
View Article and Find Full Text PDFFabrication of dual layered double hydroxide/cobalt oxide sorbent on pencil graphite for solid-phase microextraction and HPLC analysis of environmental pollutants.
Talanta
November 2024
Department of Analytical Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran.
This study describes the synthesis of Co/Al-LDH through an electrochemical method on a pencil graphite substrate, followed by the partial conversion of Co/Al-LDH to CoO via a calcination method on the same substrate. The obtained sorbent served as an extraction phase for the direct solid-phase microextraction (SPME) of environmental pollutants, including chlorophenols and aromatic hydrocarbons, from wastewater samples. The extracted analytes were quantified using high-performance liquid chromatography-ultraviolet detection (HPLC-UV).
View Article and Find Full Text PDFEnhanced oxidative degradation of 2,4-dichlorophenol by iron oxychloride supported on graphitic carbon nitride via peroxymonosulfate activation: Significant role of Fe(II)/Fe(III) conversion cycle.
Environ Res
January 2025
Key Lab of Groundwater Resources and Environment, Ministry of Education, Jilin University, Changchun, 130026, PR China; Jilin Provincial Key Laboratory of Water Resources and Environment, Jilin University, Changchun, 130026, PR China. Electronic address:
The activation of peroxymonosulfate (PMS) by heterogeneous catalysts presents an exciting but challenging strategy for degrading persistent organic pollutants in water. Iron oxychloride (FeOCl) is considered a promising heterogeneous catalyst due to its unique oxygen bridge structure, which could render it more active by facilitating the iron valence transitions between Fe(II) and Fe(III). However, the limited Fe(II)/Fe(III) conversion cycle rate hinders its catalytic activity, leading to unsatisfactory PMS activations in practical applications.
View Article and Find Full Text PDFDevelopment and validation of an LC-MS/MS method for the detection of sodium pentachlorophenolate residues on cutting boards.
Sci Prog
November 2024
Chemical Analysis & Physical Testing Institute, Shenzhen Center for Disease Control and Prevention, Shenzhen, China.
Objectives: The objective of this study was to develop and validate an automated solid-phase extraction (SPE) coupled with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) method for the detection of sodium pentachlorophenolate (PCP-Na) residues on cutting boards. Given the potential hazards and environmental persistence of PCP-Na, a sensitive and reliable method is crucial for monitoring its residues in food contact materials to ensure consumer safety.
Methods: Wood shavings from cutting boards were extracted using 10% methanol in water, followed by purification using an automated SPE system.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!