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Sequential spectrophotometric determination of chromium(III) and chromium(VI) using flow injection analysis
(1985-12-01)
A flow injection analysis (FIA) procedure for the speciation of Cr(III) and Cr(VI) using the 1,5-diphenylcarbazide (DPC) method is presented. As Cr(III) does not interfere in the Cr(VI) - DPC reaction, both Cr(VI) and total ...
Chromium-containing silica materials
(2000-08-01)
Chromium-containing silica samples were obtained from soluble sodium silicate solutions in the presence of different chromium nitrate concentrations. Precipitation was carried out in ethanolic media. Gel precipitate was ...
Chromium contamination in sediment, vegetation and fish caused by tanneries in the State of Minas Gerais, Brazil
(Science of The Total Environment, 2018)
Effect of electroless nickel interlayer on the fatigue strength of chromium electroplated AISI 4340 steel
(Elsevier B.V., 2007-04-01)
Deposition of wear-resistant hard chromium plating leads to a decrease in the fatigue strength of the base material. Despite the effective protection against wear and corrosion, fatigue life and environmental requirements ...
Assessment of chromium contamination in the Monte Alegre stream: a case study
(Brazilian Archives of Biology and Technology, 2011-06-01)
The aim of this work was to study the contamination by chromium in the sediments of the Monte Alegre stream and in the larvae of Odonata and the possible impact caused by them on the stream macroinvertebrates community. ...
Evaluation of the genotoxic potential due to the action of an effluent contaminated with chromium, by the comet assay in CHO-K1 cultures
(2005-12-01)
The comet assay technique has been considered to be more efficient in the biomonitoring of aquatic environments that the micronucleus and sister chromatid exchange techniques. The comet assay has been used to determine ...
The significance and determination by image analysis of microcrack density in hard chromium plating
(2008-04-01)
It is well known that the microcrack density is a fundamental parameter in hard chromium electroplating. The chemical and mechanical properties of this coating are widely dependent on its microcrack density. In this paper ...
Adsorption of chromium(VI) by titanium(IV) oxide coated on a silica gel surface
(Royal Soc Chemistry, 1991-03-01)
Titanium(IV) oxide, coated on the surface of silica gel (surface area, 308 m2 g-1; amount of Ti(IV) per gram of modified silica gel, 1.8 x 10(-3) mol), was used to adsorb CrO4(2-) ions from acidic solutions. The exchange ...
Influence of shot peening and hard chromium electroplating on the fatigue strength of 7050-T7451 aluminum alloy
(Elsevier B.V., 2007-07-01)
Chromium electrodeposition is a technique for the production of functional coatings on engineering components. These coatings are extensively micro-cracked and present high level of hardness, resistance to corrosion and ...
Evaluation of an electroless nickel interlayer on the fatigue & corrosion strength of chromium-plated AISI 4340 steel
(Amer Electroplaters Soc Inc, 2001-04-01)
Despite the fact that chromium electrodeposition results in protection against wear and corrosion, combined with chemical resistance and good lubricity, the reduction in fatigue strength of base metal and environmental ...