Ascorbic acid induced atrazine degradation

Abstract

In this study, we systematically investigated the degradation efficiency and the degradation mechanism of atrazine in the presence of ascorbic acid at different pH values. Although atrazine could be degraded by ascorbic acid in a wide pH range from 4 to 12, its degradation under either acidic (pH≤4) or alkaline (pH≥12) condition was more efficient than under neutral condition (pH=7). This pH dependent atrazine degradation was related to the reactive characteristic of atrazine and the reductive activity of ascorbic acid. The ascorbic acid induced atrazine degradation pathways at different pH were investigated by comparing the atrazine degradation intermediates with liquid chromatography-mass spectrometry, high performance liquid chromatography and ion chromatography. It was found that more products were detected in presence of ascorbic acid at alkaline condition. The appearance of chloride ions confirmed the dechlorination of atrazine by ascorbic acid in the absence of molecular oxygen, while its dechlorination efficiency reached highest at pH 12. These results can shed light on the application of AA for the organic pollutant remediation.

Spectroscopic properties of Vitamin C: A theoretical work

“…Various analytical techniques are applied in different matrices to assess vitamin C for instance, titrimetric [21], fluorimetric [22], spectrophotometric [23], high-performance liquid chromatography [24], enzymatic [25], kinetic [26,27], Gaussian computational method [28][29][30][31][32][33][34][35]. In this paper, Gaussian program software 09 was performed to determine the Energy Band Gaps, IR, NMR, UV Spectra, Mulliken Charge Distribution, and Molecular electrostatic potential (MEP) maps.…”

Management of wilt disease of chickpea in vivo by silver nanoparticles biosynthesized by rhizospheric microflora of chickpea (Cicer arietinum)

“…Green synthesis of nanoparticles has received attention due to its use of environment-friendly precursors for nanoparticles synthesis with many other advantages such as economic viability, ease of production, eco-friendly nature, avoiding the use of harmful chemicals, conditions of high temperature and pressure, and the expensive instruments required for physical and chemical methods. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] Microorganisms have the ability to reduce heavy metal salts to metal nanoparticles with a narrow size distribution due to the presence of various reductase enzymes. 15 In a previous report, silver nanoparticles and PbS quantum dots were synthesized by Aspergillus sp.…”

High‐Performance Piezo‐Electrocatalytic Sensing of Ascorbic Acid with Nanostructured Wurtzite Zinc Oxide

“…The design and implementation of cost‐effective, high‐performance electrochemical sensors for the rapid and accurate quantification of AA concentration in foods or biological fluids are important for many societally pervasive applications such as clinical diagnostics, [ 7 ] wearable health monitoring, [ 8 ] food safety, [ 9 ] and environmental monitoring. [ 10 ] However, the direct electro‐oxidation of AA on the surface of the bare electrodes is irreversible. [ 11 ] Moreover, the subsequent hydrolysis of the reaction will cause electrode fouling with large overpotential, poor selectivity, low sensitivity, and unsatisfactory reproducibility.…”