potentiometric titration Articles
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Biosorption study in a mining wastewater reservoir
An in situ sorption was conducted to assess the behaviour of cations in a mining wastewater reservoir. Sorption experiments on test materials showed that biomass mainly bound uranium, copper, lead, zinc, and nickel, whereas goethite bound arsenic and chromium. Clay minerals bound both barium and rare earth elements. The lacustrine sediments mainly contained iron oxy-hydroxides. Desorption ...
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Water Quality Analysis Safeguarding Families
Water is intensely purified and treated by water authorities before being ready for thousands of families. Everybody expects clean and safe tap water when turning on their taps. A water quality analysis center in Shanghi, China excels in its water testing and analysis with fully automatic potentiometric titration. Traditional Water Quality Analysis In order to ensure water hygiene and ...
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A polyvinylchloride-based cadmium ion-selective electrode using [Mo2(OAc)2(H2-calix[4]arene)] as an electroactive material
A highly electroactive material Mo2[(OAc)2(H2-calix[4]arene)] is used as a neutral carrier for Cd2 + ions in this paper. The membrane is fabricated by using ionophore [Mo2(OAc)2(H2-calix[4]arene)]:poly(vinyl chloride) (PVC): dibutylphthalate(DBP):sodium tetraphenyl borate (NaTPB) in the ratio of 40:300:470:5 respectively and tetrahydrofuran (THF) used as a solvent. The membrane electrode ...
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Preparation and characterization of EDTAD-modified magnetic-Fe3O4 chitosan composite: application of comparative adsorption of dye wastewater with magnetic chitosan
Ethylenediaminetetraacetic dianhydride (EDTAD)-modified magnetic-Fe3O4 chitosan (EMC), prepared using the cross-link agent glutaraldehyde and chemicals Fe3O4, chitosan, and EDTAD, was used to compare the adsorption of methylene blue (MB) with magnetic chitosan (MC). The composite structure was confirmed by multiple characterization techniques, including scanning electron microscopy (SEM), X-ray ...
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Synthesis of metallic nanoparticles within pH-sensitive polymeric matrices
Two different classes of pH-responsive polymeric nanostructures have been utilised as nanoreactors for the growth of colloidal metal particles. The first class consists of the micellar cores of double hydrophilic block copolymers, whereas in the second case pH-sensitive microgels are used. The micelles are formed by PHEGMA-b-PDEAEMA diblock copolymers synthesised by group transfer polymerisation. ...
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New inorganic (an)ion exchangers with a higher affinity for arsenate and a competitive removal capacity towards fluoride, bromate, bromide, selenate, selenite, arsenite and borate
Highly selective materials and effective technologies are needed to meet the increasingly stronger drinking water standards for targeted ionic species. Inorganic ion exchangers based on individual and mixed-metal hydrous oxides (or mixed adsorbents that contain inorganic ion exchangers in their composition) are adsorptive materials that are capable of lowering the concentrations of anionic ...
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Assessment of acid-base buffering properties of Flavoparmelia caperata: influence of age and pollution exposure
This paper focuses on binding sites of lichens. The aim was to investigate the extracellular ionisable functional groups or binding sites that can play a (binding) ligand's role in young (peripheral) and older (central) thallus parts of the epiphytic lichens Flavoparmelia caperata collected under different pollution load environments. Potentiometric acid-base titration was used to obtain the ...
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Determination of Ammonia and Nitrogen
Customer: CAE Grand Ouest, France CAE is a laboratory of the Veolia Group located in Western France. The laboratory is specializing in environmental analysis, especially in water and soil analysis. Application: Determination of Ammonia and TKN in waste water and soil Total Kjeldahl Nitrogen (TKN) and Ammonia are common parameters for the evaluation of the pollution of soil and water. The ...
By BUCHI
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Nitrogen determination in diphtheria and tetanus toxoids according to Pharmacopoeia using back titration and boric acid titration
KjelMaster System K-375 / K-376, KjelDigester K-449, Scrubber K-415 Nitrogen and total protein determination in pharmaceutical products are described in the European Pharmacopoeia (Ph. Eur.) and in the Pharmacopoeia of the United States (USP). Therein, different titration techniques are specified. The Ph.Eur. is using back titration in the presence of the indicator methyl red mixed solution and ...
By BUCHI
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USP <645> - simple automated analysis of ultrapure water
H2O – two simple elements, oxygen (O) and hydrogen (H), fuse together to form one of the most important molecules in the world: water. Water is everywhere on Earth and it is vital for our health and survival. It often contains other ions like calcium, magnesium, and chloride which are essential for the human body to function. However, in specific situations, ...
By Metrohm AG
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