Graphene is a novel and interesting carbon material that could be used for the separation and purification of some chemical compounds. In this investigation, graphene was used as a novel fiber-coating material for the solid-phase microextraction (SPME) of four triazine herbicides (atrazine, prometon, ametryn and prometryn) in water samples. The main parameters that affect the extraction and desorption efficiencies, such as the extraction time, stirring rate, salt addition, desorption solvent and desorption time, were investigated and optimized. The optimized SPME by graphene-coated fiber coupled with high-performance liquid chromatography-diode array detection (HPLC-DAD) was successfully applied for the determination of the four triazine herbicides in water samples. The linearity of the method was in the range from 0.5 to 200 ng/mL, with the correlation coefficients (r) ranging from 0.9989 to 0.9998. The limits of detection of the method were 0.05-0.2 ng/mL. The relative standard deviations varied from 3.5 to 4.9% (n=5). The recoveries of the triazine herbicides from water samples at spiking levels of 20.0 and 50.0 ng/mL were in the range between 86.0 and 94.6%. Compared with two commercial fibers (CW/TPR, 50 μm; PDMS/DVB, 60 μm), the graphene-coated fiber showed higher extraction efficiency.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/jssc.201100740 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Hydroxylated magnetic microporous organic network for efficient magnetic solid phase extraction of trace triazine herbicides.
J Chromatogr A
December 2024
College of Environmental Science and Engineering, Shandong Analysis and Test Center, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China. Electronic address:
Here we covalently constructed abundant long-chain hydroxyl groups-functionalized magnetic microporous organic networks (MMON-2OH) for detection of eight Triazine herbicides (THs) in honey and water samples. MMON-2OH owned a high surface area (287.86 m²/g), enhanced water compatibility, and increased exposure of long-chain hydroxyl groups, which significantly improved enrichment capacity for THs.
View Article and Find Full Text PDFNanocomposite based slow release atrazine effectively controlled Striga asiatica incidence, and enhanced sugarcane yield.
Sci Rep
December 2024
ICAR-Indian Grassland and Fodder Research Institute, Jhansi, 284 003, India.
Sugarcane is a major industrial crop highly susceptible to parasitic weed (Striga spp.), causing a 38% reduction in cane yield due to a longer lag phase of 20-40 days, and wider spacing. Herbicides with a longer retention and slow-release nature could allow Striga seeds to germinate and be killed before attaching to the host.
View Article and Find Full Text PDFTransgenerational Effects of Atrazine on Daphnia magna Based on Life-History Traits and Population Dynamics.
Bull Environ Contam Toxicol
December 2024
Jiangsu Key Laboratory for Bioaffiliationersity and Biotechnology, School of Biological Sciences, Nanjing Normal University, Nanjing, 210023, China.
Atrazine is a predominant herbicide globally, and its residues are commonly found in natural water bodies due to its extensive use. Atrazine is known for its detrimental effects on the reproductive abilities of aquatic plants and animals. Our study explored the impact of maternal exposure to atrazine on the survival and performance of offspring using the water flea Daphnia magna as a model organism.
View Article and Find Full Text PDFSolar-Light-Mediated Phototransformation of Herbicide Tribenuron-Methyl Initiated by Its Coexisting Nitrate Ion in Sunlit Agricultural Drainages.
J Agric Food Chem
January 2025
Department of Environmental Science and Engineering, University of Science and Technology of China, 230026 Hefei, China.
Understanding the environmental fate of chemical herbicides is crucial to sustainable agriculture. Due to their joint-use with nitrogen fertilizers, their residues often coexist with NO in agricultural drainages. In this study, tribenuron-methyl was used as a model to evaluate the role of NO in the phototransformation of chemical herbicides, which was characterized by a two-stage process.
View Article and Find Full Text PDFInsights from multiple stable isotopes (C, N, Cl) into the photodegradation of herbicides atrazine and metolachlor.
Chemosphere
February 2025
Département des sciences de la Terre et de l'atmosphère, Université du Québec à Montréal, Montréal, QC, H2X 1Y4, Canada; Geotop Research Centre, Montréal, QC, H2X 3Y7, Canada. Electronic address:
Many processes can contribute to the attenuation of the frequently detected and toxic herbicides atrazine and metolachlor in surface water, including photodegradation. Multi-element compound-specific isotope analysis has the potential to decipher between these different degradation pathways as Cl is a promising tool for both pathway identification and a sensitive indicator of degradation for both atrazine and metolachlor. In this study, photodegradation experiments of atrazine and metolachlor were conducted under simulated sunlight in buffered solutions (direct photodegradation) and with nitrate (indirect photodegradation by OH radicals) to determine kinetics, transformation products and isotope fractionation for C, N and for the first time Cl.
View Article and Find Full Text PDFWant 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!