Results 21 to 30 of about 363,392 (332)
On-line preconcentration using dual mini-columns for the speciation of chromium(III) and chromium(VI) and its application to water samples as studied by inductively coupled plasma-atomic emission spectrometry [PDF]
, 2005 On-line preconcentration system for the selective, sensitive and simultaneous determination of chromium species was investigated. Dual minicolumns containing chelating resin were utilized for the speciation and preconcentration of Cr(III) and Cr(VI) in ...
Hamada, Kazuhide +5 more
core +1 more source
Research Progress on Typical Quaternary Ammonium Salt Polymers
Molecules, 2022 Quaternary ammonium salt polymers, a kind of polyelectrolyte with a quaternary ammonium group, are widely used in traditional and emerging industries due to their good water-solubility, adjustable cationicity and molecular weight, high efficiency and ...
Xingqin Fu +4 more
doaj +1 more source
Flame Retardancy of Polystyrene Nanocomposites Based on an Oligomeric Organically-Modified Clay Containing Phosphate [PDF]
, 2003 Novel modified clays, which may enable the formation of flame retarded polystyrene nanocomposites by melt or solution blending, have been prepared using an ammonium salt which contains an oligomeric material consisting of vinylbenzyl chloride, styrene ...
Wilkie, Charles A., Zheng, Xiaoxia
core +2 more sources
Indonesian Journal of Chemical Research, 2017 Natural zeolite modification with the addition of ammonium salt variations was conducted. The modification was conducted by demineralization method, dealumination and followed by activation of ammonium salt. The types of activators were ammonium chloride,
Verry A. Fabiani +2 more
doaj +1 more source
Marine Drugs, 2018 Hydroxypropyltrimethyl ammonium chitosan halogenated acetates were successfully synthesized from six different haloacetic acids and hydroxypropyltrimethyl ammonium chloride chitosan (HACC) with high substitution degree, which are hydroxypropyltrimethyl ...
Yingqi Mi +7 more
doaj +1 more source
Advances in Mechanical Engineering, 2016 In this article, the experiments of two-oscillating grid turbulence with viscoelastic fluids were carried out using particle image velocimetry. Two classical drag-reducing additives with viscoelastic characteristics were chosen: polymer (polyacrylamide ...
Yue Wang +5 more
doaj +1 more source
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023 In this paper, a computer quantum-chemical simulation of the interaction of selenium nanoparticles with quaternary ammonium compounds was carried out, in which models of molecular complexes, electron density distribution, as well as higher populated and ...
A.V. Blinov +6 more
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Ecotoxicology and Environmental SafetyAmmonium chloride is an indoor environmental pollutant released due to industrial emissions, concrete, indoor bacteria, or other sources. In this study, we characterized molecular mechanisms of ammonium chloride-induced cell damage in melanocyte cells ...
Sae Woong Oh +11 more
doaj +1 more source
Inorganics, 2016 The treatment of excess zinc in the presence of ammonium chloride under ammonothermal conditions of 873 K and 97 MPa leads to diamminetriamidodizinc chloride [Zn2(NH3)2(NH2)3]Cl with a two-dimensionally μ-amido-interconnected substructure.
Theresia M. M. Richter +4 more
doaj +1 more source
Effect of Nutrient Solution Composition on Bio-Cemented Sand
Crystals, 2021 Microbial-induced carbonate precipitation is an environmentally friendly foundation treatment technology that effectively improves soil engineering performance. The various nutrient components of liquid curing compounds significantly influence the curing
Shihua Liang +3 more
doaj +1 more source