نتایج جستجو برای: persulfate compound

تعداد نتایج: 128812  

2012
Pradeep Kumar Yahya E. Choonara Lisa C. du Toit Girish Modi Dinesh Naidoo Viness Pillay

Macroporous polyacrylamide-grafted-chitosan scaffolds for neural tissue engineering were fabricated with varied synthetic and viscosity profiles. A novel approach and mechanism was utilized for polyacrylamide grafting onto chitosan using potassium persulfate (KPS) mediated degradation of both polymers under a thermally controlled environment. Commercially available high molecular mass polyacryl...

Journal: :iranian journal of analytical chemistry 2015
hassan karami bahr ali najafi

hydrous manganese dioxide nanoclusters are prepared by the oxidation of manganese (ii) ions with ammonium persulfate and used as a new sorbent for ag+ ion removal from aqueous medium. the synthesized compound is characterized using scanning electron microscopy, dynamic light scattering, energy dispersive analysis of x-rays, x-ray diffraction and bet surface measurements. scanning electron micro...

Journal: :The Analyst 2011
Jingqi Tian Yingwei Zhang Yonglan Luo Hailong Li Junfeng Zhai Xuping Sun

In this Communication, we report on the first preparation of conjugation polymer poly(2,3-diaminonaphthalene) (PDAN) microspheres via chemical oxidation polymerization of 2,3-diaminonaphthalene (DAN) monomers by ammonium persulfate (APS) at room temperature. We further demonstrate the use of PDAN microspheres as a novel quencher for fluorescence-enhanced nucleic acid detection.

Journal: :Zeitschrift für Elektrotechnik und Elektrochemie 1903

Journal: :Chemosphere 2021

Model solutions of bisphenol A (BPA) in 0.050 M Na2SO4 at pH 3.0 have been treated by the electro/Fe2+/persulfate process. The activation 5.0 mM persulfate with 0.20 Fe2+ yielded a mixture sulfate radical anion (SO4?) and OH, although quenching tests revealed prevalence former species as main oxidizing agent. In trials run an IrO2/carbon-felt cell, 98.4% degradation was achieved alongside 61.8%...

Journal: :jundishapur journal of health sciences 0
elham ahmadpour department of environmental engineering, sciences and research branch, islamic azad university, ahvaz, ir iran reza jalilzadeh yengejeh department of environmental engineering, ahvaz branch, islamic azad university, ahvaz, ir iran; department of environmental engineering, ahvaz branch, islamic azad university, ahvaz,ir iran. tel: +98-9124794322

results the results showed that the pcp degradation increased with an increase in zvi dosage from 0.056 to 1.4 g/l, an increase in persulfate concentration from 2.5 to 15.0 mm/l, and an increase in zvi to ps molar ratio from 0.1 to 2.5. the optimal initial ph for pcp removal was 5.0 and the maximum removal efficiency of 70% was achieved within 120 minutes. moreover, the zvi catalyst was reused ...

2015
Dnyaneshwar N Garad Subhash D Tanpure Santosh B Mhaske

Ammonium persulfate-dimethyl sulfoxide (APS-DMSO) has been developed as an efficient and new dehydrating reagent for a convenient one-pot process for the synthesis of miscellaneous cyclic imides in high yields starting from readily available primary amines and cyclic anhydrides. A plausible radical mechanism involving DMSO has been proposed. The application of this facile one-pot imide forming ...

Journal: :Environmental Health Perspectives 1989
J A Last

Effects of respirable aerosols of sulfuric acid, ammonium sulfate, sodium sulfite, and ammonium persulfate on lungs of rats are reviewed. The literature regarding interactions between ozone or nitrogen dioxide and acidic aerosols (ammonium sulfate, sulfuric acid) is discussed. An unexpected interaction between nitrogen dioxide and sodium chloride aerosol is also discussed. An attempt is made to...

Journal: :Journal of Zhejiang University SCIENCE B 2006

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