Spectrophotometric determination of trace permanganate in water with N,N-diethyl-p-phenylenediamine (DPD)

Liu, Xin; Cai, Huahua; Zou, Jing; Pang, Zijun; Yuan, Baoling; Zhou, Zhenming; Cheng, Qingfeng

doi:10.1016/j.chemosphere.2018.08.087

Cited by 29 publications

(14 citation statements)

References 30 publications

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“…It demonstrates that the produced DPD •+ has a broad and intense absorption spectrum in the visible region with two peaks of absorption at 510 nm and 551 nm. This is in agreement with the absorption spectral features listed by other researchers in this field, namely Liu et al, 2018 andZou et al, 2019.…”

Section: Absorption Spectrasupporting

confidence: 93%

The Spectrophotometric Determination of Chromium (vi) Using N, N-diethyl-p-phenylenediamine in Synthetically Prepared Wastewater, And Tap Water

Saleem

2021

uod

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The DPD (N, N-diethyl-p-phenylenediamine) is introduced in the present study as an analytical reagent for the direct, rapid, easy, and sensitive spectrophotometric detection of hexavalent chromium Cr (VI) species which is health hazard. The oxidization of the colorless DPD (N, N-diethyl-pphenylenediamine) reagent with Cr (VI) results in a red color DPD radical (DPD •+ ) at pH 4.39. The color intensity is directly proportional to the Cr (VI) concentration. By utilizing a UV-Vis spectrophotometer, the measurement of the produced DPD •+ can be identified in term of quantity at 551 nm. The linear calibration graphs for 0.2 -2 mg. L −1 of Cr (VI) are obtained with a correlation coefficient value of 0.9997. The molar absorption coefficient and Sandell's sensitivity are 2.5449x10 4 L.mol −1 cm −1 and 0.028 mg. Cr (VI), cm −2 , respectively. The present work develops, optimizes, and validates a new spectrophotometric method for determining Cr (VI) in the samples of the synthetically prepared wastewater and tap water. The method is effectively applied and the findings are statistically evaluated with those of the reference method.

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Section: Absorption Spectrasupporting

confidence: 93%

The Spectrophotometric Determination of Chromium (vi) Using N, N-diethyl-p-phenylenediamine in Synthetically Prepared Wastewater, And Tap Water

Saleem

2021

uod

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“…Permanganate determination can be done using fiber optics, 4 metal−organic frameworks, 5 voltammetry, 6 and spectrophotometry. 7 These methods have limitations caused by complex processes, poor selectivity, and low sensitivity. In order to overcome these limitations, a novel fluorescence sensor for detecting MnO 4 − in an aqueous medium is imperative.…”

mentioning

confidence: 99%

“…Real-time MnO 4 – monitoring is important. Permanganate determination can be done using fiber optics, metal–organic frameworks, voltammetry, and spectrophotometry . These methods have limitations caused by complex processes, poor selectivity, and low sensitivity.…”

mentioning

confidence: 99%

Facile Preparation of Boron and Nitrogen Codoped Green Emission Carbon Quantum Dots for Detection of Permanganate and Captopril

Jiang

Qin

et al. 2019

Anal. Chem.

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A hydrothermal strategy for preparing boron and nitrogen codoped carbon quantum dots was studied using the precursors of p-amino salicylic acid, boric acid and ethylene glycol dimethacrylate. The boron and nitrogen codoped carbon quantum dots have high fluorescence intensity, good monodispersity, high stability, superior water solubility, and a fluorescence quantum yield of 19.6%. Their average size is 5 nm. Their maximum excitation and emission wavelengths are 380 and 520 nm, respectively. Permanganate (MnO 4 − ) quenched boron and nitrogen codoped carbon quantum dots fluorescence through inner filter effect and static quenching effects. The linear relation between quenching efficiency and MnO 4 − concentration ranged from 0.05 to 60 μmol/L with a detection limit of 13 nmol/L. In the presence of captopril, MnO 4 − was reduced to Mn 2+ and the fluorescence of boron and nitrogen codoped carbon quantum dots was recovered. The linear range between recovery and captopril concentration was from 0.1 to 60 μmol/L. The limit of detection was 0.03 μmol/L. The developed method can be employed as a sensitive fluorescence sensing platform for MnO 4 − . It has been successfully used for captopril detection in mouse plasma.

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“…Total amount of free iodine species (I 2 , I 3 – and HIO) and possible ROS was analyzed using the DPD method by forming DPD •+ with a strong absorbance at 551 nm (ε = 21 000 M –1 ·cm –1 ) to quantify HIO (see SI Text S3 for details). − The method of adding excess I – to form I 3 – to analyze HIO , could not be used here as H 2 O 2 would react with the excess I – , resulting in inaccurate quantification.…”

Section: Methodsmentioning

confidence: 99%

Kinetics and Mechanism Investigation of Selective Arsenite Oxidation by Reactive Iodine Species in Hydrogen Peroxide and Iodide (H₂O₂/I^–) System

Chen

Koh

et al. 2021

ACS EST Water

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Pretreatment of arsenite (As(III)) to arsenate (As(V)) is crucial in remediation of As(III)-contaminated waterbodies. Hydroxyl or sulfate radicals-based advanced oxidation processes are effective; however, the efficiency becomes low as radicals can be quenched by coexisting matters besides As(III). Both I − and As(III) coexist in several types of contaminated water such as shale gas flowback water. Herein, we proposed using H 2 O 2 to react with I − so as to generate reactive iodine species (RIS) for effective oxidation of As(III). The presence of commonly existing anions, methanol, tert-butanol, 2-propanol, formic acid, humic acid, phenol, and benzoquinone did not affect the oxidation performance. Chromate, Cu 2+ or divalent/trivalent irons would enhance the oxidation. Only hydroquinone (>0.3 mM) had an inhibition effect on the oxidation. Unlike peroxymonosulfate and peroxydisulfate that are reactive to Cl − or Br − , H 2 O 2 only showed a solely selective reactivity for the I − to form the RIS. Our experimental and kinetic simulation results confirmed the most significant reaction pathway and suggested that I 2 and I 3 − were the main responsible intermediates. Our study demonstrated that the RIS possessed a higher selectivity to As(III) compared with other coexisting matters. Therefore, the application of RIS is very promising in the redox conversion mediation.

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Spectrophotometric determination of trace permanganate in water with N,N-diethyl-p-phenylenediamine (DPD)

Cited by 29 publications

References 30 publications

The Spectrophotometric Determination of Chromium (vi) Using N, N-diethyl-p-phenylenediamine in Synthetically Prepared Wastewater, And Tap Water

The Spectrophotometric Determination of Chromium (vi) Using N, N-diethyl-p-phenylenediamine in Synthetically Prepared Wastewater, And Tap Water

Facile Preparation of Boron and Nitrogen Codoped Green Emission Carbon Quantum Dots for Detection of Permanganate and Captopril

Kinetics and Mechanism Investigation of Selective Arsenite Oxidation by Reactive Iodine Species in Hydrogen Peroxide and Iodide (H₂O₂/I^–) System

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Spectrophotometric determination of trace permanganate in water with N,N-diethyl-p-phenylenediamine (DPD)

Cited by 29 publications

References 30 publications

The Spectrophotometric Determination of Chromium (vi) Using N, N-diethyl-p-phenylenediamine in Synthetically Prepared Wastewater, And Tap Water

The Spectrophotometric Determination of Chromium (vi) Using N, N-diethyl-p-phenylenediamine in Synthetically Prepared Wastewater, And Tap Water

Facile Preparation of Boron and Nitrogen Codoped Green Emission Carbon Quantum Dots for Detection of Permanganate and Captopril

Kinetics and Mechanism Investigation of Selective Arsenite Oxidation by Reactive Iodine Species in Hydrogen Peroxide and Iodide (H2O2/I–) System

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Kinetics and Mechanism Investigation of Selective Arsenite Oxidation by Reactive Iodine Species in Hydrogen Peroxide and Iodide (H₂O₂/I^–) System