Topic
Sodium dichromate
About: Sodium dichromate is a research topic. Over the lifetime, 421 publications have been published within this topic receiving 6202 citations. The topic is also known as: Disodium salt & sodium bichromate.
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TL;DR: In this paper, experiments were conducted on kaolin contaminated with a lixiviant obtained from a sodium dichromate plant residue to demonstrate the efficacy of electrochemical cleaning and only 36% chromium was removed from the soil after 120 hours.
6 citations
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16 Sep 2015
TL;DR: In this article, a delayed crosslinked chromium gel profile control plugging agent is presented, which is formed by crosslinking partially hydrolyzed polyacrylamide and Cr generated by redox reaction.
Abstract: The invention relates to a delayed crosslinked chromium gel profile control plugging agent, belonging to the technical field of oilfield profile control plugging. The delayed crosslinked chromium gel profile control plugging agent is formed by crosslinking partially hydrolyzed polyacrylamide and Cr generated by redox reaction. The delayed crosslinked chromium gel profile control plugging agent is composed of the following components in percentage by weight: 0.3-0.8% of partially hydrolyzed polyacrylamide, 0.02-0.20% of sodium dichromate, 0.15-0.50% of additive and the balance of water. Compared with the reported chromium gel, the delayed crosslinked chromium gel has the advantages of long gelling time, high heat stability and high gel strength. Under the optimal formula, the delayed crosslinked chromium gel has high plugging rate, favorable abrasion resistance and high practicality, and satisfies the demands for on-site construction.
6 citations
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TL;DR: In this article, Fourier transform infrared spectra of aqueous sodium chlorate, perchlorate, and dichromate solutions were obtained using multivariate spectral reconstruction and spectral subtraction.
Abstract: Infrared spectra of single and mixed aqueous sodium chlorate, sodium perchlorate and sodium dichromate solutions were recorded using Fourier transform infrared spectrometry. With the aid of spectral subtraction and multivariate spectral reconstruction, clear spectra of these salts, in the spectral region 900–1250 cm–1, were obtained. The features of these spectra include maximum absorption bands at 973 cm–1, 1110 cm–1 and 950 cm–1 due to chlorate, perchlorate and dichromate, respectively. In mixed solutions these salts could be detected at concentrations as low as 0.64 g l–1. The linear dynamic range was found to be 0.2–63.8 g l–1, 0–73.47 g l–1 and 0–149 g l–1 for chlorate, perchlorate and dichromate, respectively. The results obtained in the analysis of industrial samples compared well with certified values. Interference effects of different inorganic salts were studied. Sodium salts of bromide, iodate, carbonate, chloride, nitrate, and hydrogencarbonate were found to have no significant interference. Standard deviations of industrial sample determinations were found to be in the range of 2.5–4.10%.
6 citations
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01 Jan 1987TL;DR: N-acetylcysteine, a precursor of intracellular cysteine and glutathione, is extensively used in the treatment of patients suffering from respiratory diseases and has a variety of antitoxic properties in humans, animals and in vitro test systems.
Abstract: N-acetylcysteine (NAC), a precursor of intracellular cysteine and glutathione (GSH)) (1), is extensively used in the treatment of patients suffering from respiratory diseases. Moreover, this synthetic aminothiol has been shown to possess a variety of antitoxic properties in humans, animals and in vitro test systems (2).
6 citations
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TL;DR: A wet chemical method for the estimation of carbon in uranium carbides has been developed, based on oxidation with a saturated solution of sodium dichromate in 9M sulphuric acid, and titration of the excess of barium hydroxide with standard potassium hydrogen phthalate solution.
6 citations