DOI: 10.1016/j.watres.2018.12.031
Scopus记录号: 2-s2.0-85059538245
论文题名: Diethyl phenylene diamine (DPD) oxidation to measure low concentration permanganate in environmental systems
作者: Laszakovits J.R. ; Patterson A. ; Hipsher C. ; MacKay A.A.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 403
结束页码: 412
语种: 英语
英文关键词: Colorimetry
; Diethylphenylene diamine (DPD)
; Dissolved organic matter (DOM)
; Manganese dioxide
; Oxidation kinetics
; Permanganate
Scopus关键词: Amines
; Biodegradation
; Biogeochemistry
; Biological materials
; Colorimetry
; Kinetics
; Manganese oxide
; Oxidation
; Phenols
; Potable water
; Rate constants
; Water treatment
; Diethylphenylene diamine (DPD)
; Dissolved organic matters
; Manganese dioxide
; Oxidation kinetics
; Permanganate
; Ionic strength
; diethyl phenylene diamine
; dissolved organic matter
; drinking water
; manganese dioxide
; permanganate potassium
; phenol
; phenylenediamine derivative
; polyvinylidene fluoride
; sodium chloride
; unclassified drug
; chemical compound
; chemical reaction
; colorimetry
; concentration (composition)
; degradation
; dissolved organic matter
; drinking water
; inorganic compound
; organic pollutant
; oxidation
; pH
; phenol
; reaction kinetics
; reaction rate
; scavenging (chemistry)
; water treatment
; Article
; colorimetry
; comparative study
; concentration (parameter)
; degradation kinetics
; first order rate constant
; ionic strength
; limit of detection
; limit of quantitation
; observed association rate constant
; oxidation
; oxidation kinetics
; particle size
; pH
; photon correlation spectroscopy
; pore size
; priority journal
; refraction index
; signal noise ratio
; total organic carbon
; ultra performance liquid chromatography
; ultraviolet visible spectroscopy
; water quality
; water sampling
; water supply
英文摘要: Permanganate has been used traditionally in drinking water treatment for its oxidation properties and ease of use. The concentration of permanganate in treatment conditions is low and difficult to detect. A colorimetric method using diethylphenylene diamine (DPD) oxidation to measure low levels (i.e., less than 6 μM) of permanganate in water was developed and applied to quantify permanganate scavenging by dissolved organic matter (DOM). Manganese dioxide (MnO2) particles were shown to interfere with DPD oxidation; however, particles were removed effectively using 0.1 μm PVDF filters prior to reaction with DPD. DOM and complexed-Mn(III) were concluded to not interfere with the DPD reaction. The DPD method was validated by obtaining the second-order rate constant for permanganate reaction with phenol (1.7 ± 0.2 M−1 s−1), and comparing to the rate constant obtained independently by monitoring phenol degradation (i.e., UPLC-UV) (1.6 ± 0.2 M−1 s−1). Permanganate reaction with DOM isolate samples did not follow pseudo-first order kinetics. Faster reaction rates were observed with higher ionic strength (1 mM versus 5 mM carbonate). No change in reaction rates with pH was observed at lower ionic strength (1 mM); while at higher ionic strength, the reaction rate was faster at pH 7 than at pH 10. In contrast, linear kinetics were observed for permanganate reaction with DOM in filtered whole water samples. These samples showed similar trends with pH and ionic strength as for DOM isolates. The presented method is valid to quantify permanganate reaction rates with organic contaminants or with natural scavengers. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122037
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Civil, Environmental, and Geodetic Engineering, The Ohio State University, United States; Environmental Science Graduate Program, The Ohio State University, United States
Recommended Citation:
Laszakovits J.R.,Patterson A.,Hipsher C.,et al. Diethyl phenylene diamine (DPD) oxidation to measure low concentration permanganate in environmental systems[J]. Water Research,2019-01-01