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Keywords = butralin

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4 pages, 471 KiB  
Proceeding Paper
Ion-Selective Electrode (ISE) Based on Polyvinyl Chloride Membrane Formed from Heterocyclic Quinazoline Compounds as Ionophore material
by Chandra Mohan, Jenifer Robinson and Arvind Negi
Eng. Proc. 2023, 48(1), 10; https://doi.org/10.3390/CSAC2023-14914 - 26 Sep 2023
Cited by 7 | Viewed by 1915
Abstract
A heterocyclic compound of S and N with cyclic structures, like Furans, thiophenes and related azole analogs, is important as a ligand because of it is readily available, stable and easily functionalized. Various types of heterocyclic molecules quinazolines and their derivatives contain important [...] Read more.
A heterocyclic compound of S and N with cyclic structures, like Furans, thiophenes and related azole analogs, is important as a ligand because of it is readily available, stable and easily functionalized. Various types of heterocyclic molecules quinazolines and their derivatives contain important chromophores with desirable electrochemical properties to be applied in the sensor field. Metal complexes of these compounds have demonstrated significant electrochemical properties as ionophore or electroactive materials for the fabrication of ISEs with different polymeric membranes. R. Selva Kumar et al. 2019 reported the use of dibutyl(8-hydroxyquinolin-2-yl)methylphosphonate as ionophore in a PVC matrix for the fabrication of a potentiometric thorium(IV) ion-selective electrode These quinazoline-based membranes with other additives and plasticizers are very useful for the development of a potential difference across the membrane at membrane-solution interface in the required proportions . Analytes, such as Butralin, Hydroxylamine, and Nitrite, and heavy metal ions, like Fe3+ and Th4+, have also been determined using quinazoline-based membrane sensors. ISE-based electrochemical sensors are very useful in the analysis of food products, drinking water, beverages, fertilizers, soil industrial effluents, etc. They also are applied in potentiometric titration as indicator electrodes. Full article
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12 pages, 1972 KiB  
Article
Ratiometric Electrochemical Sensor for Butralin Determination Using a Quinazoline-Engineered Prussian Blue Analogue
by Marcio Cristiano Monteiro, João Paulo Winiarski, Edson Roberto Santana, Bruno Szpoganicz and Iolanda Cruz Vieira
Materials 2023, 16(3), 1024; https://doi.org/10.3390/ma16031024 - 23 Jan 2023
Cited by 23 | Viewed by 2782
Abstract
A ratiometric electrochemical sensor based on a carbon paste electrode modified with quinazoline-engineered ZnFe Prussian blue analogue (PBA-qnz) was developed for the determination of herbicide butralin. The PBA-qnz was synthesized by mixing an excess aqueous solution of zinc chloride with an aqueous solution [...] Read more.
A ratiometric electrochemical sensor based on a carbon paste electrode modified with quinazoline-engineered ZnFe Prussian blue analogue (PBA-qnz) was developed for the determination of herbicide butralin. The PBA-qnz was synthesized by mixing an excess aqueous solution of zinc chloride with an aqueous solution of precursor sodium pentacyanido(quinazoline)ferrate. The PBA-qnz was characterized by spectroscopic and electrochemical techniques. The stable signal of PBA-qnz at +0.15 V vs. Ag/AgCl, referring to the reduction of iron ions, was used as an internal reference for the ratiometric sensor, which minimized deviations among multiple assays and improved the precision of the method. Furthermore, the PBA-qnz-based sensor provided higher current responses for butralin compared to the bare carbon paste electrode. The calibration plot for butralin was obtained by square wave voltammetry in the range of 0.5 to 30.0 µmol L−1, with a limit of detection of 0.17 µmol L−1. The ratiometric sensor showed excellent precision and accuracy and was applied to determine butralin in lettuce and potato samples. Full article
(This article belongs to the Special Issue Advanced Electrode Materials Dedicated for Electroanalysis)
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9 pages, 1161 KiB  
Article
Establishing the HPLC-MS/MS Method for Monitoring the Residue and Degradation of Butralin in Ginseng during Field and Risk Assessments
by Xiumei Wang, Qinghang You, Zhiguang Hou, Xiaolong Yu, Hemin Gao, Yuxue Gao, Liran Wang, Liping Wei and Zhongbin Lu
Agronomy 2022, 12(11), 2675; https://doi.org/10.3390/agronomy12112675 - 28 Oct 2022
Cited by 4 | Viewed by 1999
Abstract
Butralin can effectively mitigate the spreading of weeds in ginseng fields, however, the dissipation and residues of butralin in ginseng have not been investigated. In this study, we established a high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method to determine the butralin residue [...] Read more.
Butralin can effectively mitigate the spreading of weeds in ginseng fields, however, the dissipation and residues of butralin in ginseng have not been investigated. In this study, we established a high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS) method to determine the butralin residue and its dissipation in ginseng and its dietary intake risk. The mean recoveries of butralin in ginseng (fresh, dried, plants, and soil) ranged from 93.1–107.5% with relative standard deviations of 0.7–6.4%. The half-lives of butralin in ginseng plant and soil were 10.81–18.91 days, and its final residues in ginseng, dried gingeng, gingeng plant, and soil were <0.01, <0.010–0.02, 0.011–0.19, and 0.162–0.410 mg/kg, respectively. The dietary risk quotient of butralin was 3.25 × 10−4, which suggests that the consumption of butralin-treated ginseng during the harvest period does not affect human health. Full article
(This article belongs to the Special Issue Pesticide Residues and Nutritional Quality of Agro-Products)
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19 pages, 2205 KiB  
Article
Weed Control, Growth, Nodulation, Quality and Storability of Peas as Affected by Pre- and Postemergence Herbicides
by Ibrahim S. Abdallah, Karima F. Abdelgawad, Mohamed M. El-Mogy, Mohamed B. I. El-Sawy, Hend A. Mahmoud and Mahmoud A. M. Fahmy
Horticulturae 2021, 7(9), 307; https://doi.org/10.3390/horticulturae7090307 - 13 Sep 2021
Cited by 10 | Viewed by 6063
Abstract
Weeds represent a major constraint for successful pea cultivation, resulting in loss of green pea yield and quality. Two field experiments were carried out during the winter seasons of 2018/2019 and 2019/2020. The objectives of the current study were to evaluate the efficacy [...] Read more.
Weeds represent a major constraint for successful pea cultivation, resulting in loss of green pea yield and quality. Two field experiments were carried out during the winter seasons of 2018/2019 and 2019/2020. The objectives of the current study were to evaluate the efficacy of pendimethalin, butralin, fluazifop butyl, bentazon, and hoeing on weed control, and their impact on pea growth, nodule formation, yield, quality, and storability. The results indicated that hoeing and fluazifop butyl were the most effective treatments for weed control in terms of the lowest values of total weed dry weight. The bentazon and fluazifop butyl herbicides didn’t affect active nodules number, plant height, plant weight, root length, or number of leaves and branches. Additionally, bentazon and hoeing resulted in the highest total yield per plant and protein content. Butralin and pendimetalin achieved the lowest yield, and butralin also resulted in the lowest plant height and weight. Bentazon-treated peas had the highest chemical compositions in terms of chlorophyll, carotenoids, total sugar, and vitamin C contents in pea pods at harvest and during cold storage at 4 °C and 95 RH for 45 days. No detectable residues of the four herbicides under study were detected in green pods, suggesting that pods can be safely consumed at the time of harvesting. It can be concluded that nodules formation in pea was not affected significantly by the application of the tested herbicides, except pendimethalin and butralin. Furthermore, bentazon had a positive impact on nodules formation and pods quality and could be used effectively for controlling the broadleaf weeds, and it was simultaneously a selective and safe herbicide in pea cultivation. Full article
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