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Thin-Layer Chromatography in Clinical Chemistry
Published in Bernard Fried, Joseph Sherma, Practical Thin-Layer Chromatography, 2017
Lipids are usually rendered visible and subsequently quantitated by either charring or by color-forming sprays. Iodine vapors are used for qualitative detection, whereas fluorescence measurements after derivatization are found to be most suitable for quantification. Manganese (II) chloride is mainly used as a derivatizing agent. Few lipids have significant UV chromophores, but postchromatographic derivatization methods result in almost universal detection. In general, high performance thin-layer chromatographic techniques have resulted in better resolution between critical lipid groups.
Adsorption of hexavalent chromium from water using manganese-aluminum coated sand: Kinetics, equilibrium, effect of pH and ionic strength
Published in Journal of Environmental Science and Health, Part A, 2021
Snover Punia, Lisha Wu, Amid P. Khodadoust
All chemicals were of analytical reagent grade and no further purification was carried out. All solutions were prepared with de-ionized (DI) water made in the laboratory with a resistance greater than 18 MΩ. Silica sand (quartz) with a sand grain size of 50-70 US mesh was obtained from Sigma-Aldrich. The sand was coated using manganese (II) chloride tetrahydrate (MnCl2·4H2O, 99% purity) and aluminum chloride hexahydrate (AlCl3·6H2O, 99% purity) obtained from Acros. Potassium dichromate (K2Cr2O7, ACS grade, crystals) was also obtained from Acros and used to prepare stock solutions of Cr(VI) in DI water. Hydrochloric acid (HCl, ACS plus grade) and sodium hydroxide (NaOH 10 N solution, 30% w/w certified) were used to adjust solution pH. The calcium chloride (CaCl2, 98.8% purity, ACS grade), sodium sulfate (Na2SO4, 99.3% purity, ACS grade) and sodium bicarbonate (NaHCO3, 100% purity, ACS grade) obtained from Fisher Scientific were used to prepare different co-existing ions solutions.
Efficient and selective use of functionalized material in the decontamination of water: removal of emerging micro-pollutants from aqueous wastes
Published in Environmental Technology, 2023
Ralte Malsawmdawngzela, Lalhmunsiama Siama, Diwakar Tiwari, Seung-Mok Lee, Dong-Jin Kim
Pristine bentonite was collected from Gujarat, India. To eliminate impurities from the clay, the raw bentonite was thoroughly washed using purified water and placed in an oven at 80°C overnight for drying. The bentonite was sieved to obtain the clay powder having mesh particle size of 100 BSS, i.e. 0.150 mm. The chemicals used in this research are 3-aminopropyletriethoxy silane, ethylenediaminetetraacetic acid, magnesium sulphate heptahydrate, calcium chloride dihydrate powder, manganese (II) chloride, oxalic acid, di-sodium hydrogen phosphate anhydrous purified and nickel chloride, sodium chloride, glycine, tetracycline (TC) hydrochloride, and triclosan (TCS). All these chemicals are of AR grade.
A renewable biosorbent material for green decontamination of heavy metal pollution from aquatic medium: a case study on manganese removal
Published in International Journal of Phytoremediation, 2021
Fatih Deniz, Elif Tezel Ersanli
Manganese (II) chloride dihydrate was supplied from Merck, Germany and used as a model heavy metal to evaluate the treatment efficiency of biosorbent. A stock solution of manganese was prepared at a concentration of 1,000 mg L−1 using distilled water and the desired concentrations were freshly prepared from the heavy metal stock by dilution. The initial pH of prepared solutions was adjusted by the solutions of 0.1 mol L−1 of sodium hydroxide and 0.1 mol L−1 of hydrochloric acid. All the chemicals used in this work were of analytical grade.