Colorimetric and fluorescence analysis of percarbonate and oxygen bleach by perhydrolysis of resorufin ester

Lee, Kang Min; Park, Ka Young; Kim, Na Young; Yoo, Jae Hoon; Choi, Myung Gil; Ahn, Sangdoo; Chang, Suk‐Kyu

doi:10.1016/j.dyepig.2020.108804

Cited by 4 publications

(3 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Figure g, the sulfanilamide could be totally degraded within 0.5 min in the presence of HCO 3 – , while in the absence of HCO 3 – , the time for the total degradation of the sulfanilamide increased to 1.5 min. The enhancement of HCO 3 – to the sulfanilamide degradation can be explained as that it could react directly with the PMS to form the percarbonate ion (HCO 4 – ) (eq ), , which could be semiquantitatively analyzed via a colorimetric and fluorescence method (Figure S13), thus increasing the amount of oxidants with a high sulfanilamide degradation capacity in the early stage of the system. Figure h shows that the NO 3 – had almost no influence on the sulfanilamide degradation.…”

Section: Resultsmentioning

confidence: 99%

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Huang

Liu

et al. 2021

ACS EST Eng.

View full text Add to dashboard Cite

Lignocellulosic biomass wastes can be considered as renewable and abundantly available resources, but it is a big challenge to convert them into valuable products via environmentally friendly and cost-effective approaches. Herein, a facile twostep hydrothermal-pyrolysis method is developed to fully convert the lignocellulosic biomass wastes into N-doped biochar-stabilized Co nanoparticles (Co−N/biochar) and bio-oil enriched with valueadded small compounds. The as-synthesized Co−N/biochar, with uniform N doping and well-dispersed Co nanoparticles, presents favorable activities for activating peroxymonosulfate (PMS) to degrade refractory organic contaminants. The underlying PMS activation and pollutant degradation mechanism is illuminated with free radical quenching experiments and an electron paramagnetic resonance analysis. The nonradical pathway is demonstrated to be dominant in the pollutant degradation with the PMS/Co−N/ biochar system. The singlet oxygen ( 1 O 2 ) generated from PMS activation is identified as the main contribution species for the pollutant degradation process. This work will provide a new approach to fully convert the biomass wastes into bio-oil and functional biochar materials with prominent activities.

show abstract

Section: Resultsmentioning

confidence: 99%

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Huang

Liu

et al. 2021

ACS EST Eng.

View full text Add to dashboard Cite

show abstract

“…Sodium percarbonate functions by acting as a convenient source of hydrogen peroxide with the same properties as hydrogen peroxide. Percarbonate offers the advantage of safer handling and more environmental friendly features than other common oxidants [ 25 ]. Titration with permanganate is a simple and satisfactory method to examine the quantity of hydrogen peroxide, with the same effort, that of.…”

Section: Resultsmentioning

confidence: 99%

Rampant online marketing of teeth whitening products: Evaluation of online information, labelling accuracy and quantitative analysis of high peroxide content gels

Fittler,

Rozmer,

Fittler

2023

Heliyon

View full text Add to dashboard Cite

“…However, the titration procedure is time-consuming and inconvenient for routine applications. Kang et al [9] used the fluorometric method to detect SPC; the limit of detection was 0.45 µM and the recovery of SPC was 96.2-99.6%. Although the fluorometric method had high sensitivity, the experimental equipment was expensive and complex to operate.…”

Section: Introductionmentioning

confidence: 99%

A Novel Spectrophotometric Method for Determination of Percarbonate by Using N, N-Diethyl-P-Phenylenediamine as an Indicator and Its Application in Activated Percarbonate Degradation of Ibuprofen

Li,

Chen,

Meng

et al. 2023

Molecules

View full text Add to dashboard Cite

Sodium percarbonate (SPC) concentration can be determined spectrophotometrically by using N, N-diethyl-p-phenylenediamine (DPD) as an indicator for the first time. The ultraviolet–visible spectrophotometry absorbance of DPD•+ measured at 551 nm was used to indicate SPC concentration. The method had good linearity (R2 = 0.9995) under the optimized experimental conditions (pH value = 3.50, DPD = 4 mM, Fe2+ = 0.5 mM, and t = 4 min) when the concentration of SPC was in the range of 0–50 μM. The blank spiked recovery of SPC was 95–105%. The detection limit and quantitative limit were 0.7–1.0 μM and 2.5–3.3 μM, respectively. The absorbance values of DPD•+ remained stable within 4–20 min. The method was tolerant to natural water matrix and low concentration of hydroxylamine (<0.8 mM). The reaction stoichiometric efficiency of SPC-based advanced oxidation processes in the degradation of ibuprofen was assessed by the utilization rate of SPC. The DPD and the wastewater from the reaction were non-toxic to Escherichia coli. Therefore, the novel Fe2+/SPC-DPD spectrophotometry proposed in this work can be used for accurate and safe measurement of SPC in water.

show abstract

Colorimetric and fluorescence analysis of percarbonate and oxygen bleach by perhydrolysis of resorufin ester

Cited by 4 publications

References 36 publications

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Pyrolysis of Biomass Wastes to N-Doped Biochar-Stabilized Co Nanoparticles for Efficient Pollutant Degradation Via Peroxymonosulfate Activation

Rampant online marketing of teeth whitening products: Evaluation of online information, labelling accuracy and quantitative analysis of high peroxide content gels

A Novel Spectrophotometric Method for Determination of Percarbonate by Using N, N-Diethyl-P-Phenylenediamine as an Indicator and Its Application in Activated Percarbonate Degradation of Ibuprofen

Contact Info

Product

Resources

About