Potassium dichromate

About: Potassium dichromate is a research topic. Over the lifetime, 1430 publications have been published within this topic receiving 18967 citations. The topic is also known as: Potassium dichromate(VI) & Chromium potassium oxide.

Melatonin Alleviated Potassium Dichromate-Induced Oxidative Stress and Reprotoxicity in Male Rats

Abstract: Melatonin (ML) is a potent antioxidant that reduces oxidative stress. This study was designed to examine the protective effect of melatonin on potassium dichromate- (PDC-) induced male reproductive toxicity. Forty rats were divided into five groups: the control group, rats administered PDC orally (10 mg/kg body weight) for eight weeks, rats administered ML intraperitoneally at doses of either 2.5 or 5 mg/kg followed by the administration of PDC, and rats administered 5 mg/kg ML only. The treatment of rats with PDC led to a decrease in the levels of plasma sex hormones, glutathione, superoxide dismutase, catalase, carnitine, sperm count, and motility. Testicular malondialdehyde levels, nitric oxide concentrations, and abnormalities increased significantly in the PDC group. Melatonin administration to the PDC-treated rats reduced the increase of malondialdehyde and restored the activity of antioxidant enzymes (superoxide dismutase and catalase), glutathione, and sex hormone levels. Moreover, ML attenuated PDC-induced increase in levels of tumor necrosis factor-alpha or interleukin-6. ML alleviated histopathological changes and an increase of p53-positive immune reaction due to PDC. Furthermore, ML inhibited PDC-induced decrease in the DNA content of spermatogenic cells. This study proposed that melatonin may be useful in mitigating oxidative stress-induced testicular damage due to potassium dichromate toxicity.

Combustion-supporting, desulfurization and coal-saving additive used for boiler fire coal

Abstract: The invention provides a combustion-supporting desulfurating coal-saving additive which is used in the burning coal in boiler, the preparation of which is composed of 24-35 percent combustion improvers of methanol, aether, tween-80; 32-38 percent oxidants of potassium permanganate, potassium chlorate and potassium dichromate; 4-28 percent desulfurizer in which quicklime, potassium permanganate, potassium chlorate and potassium dichromate take part in; 18-22 percent anti-coking agent which contains potassium dichromate and quicklime; the rest is water, which complement the total volume of the additive to be 100 percent. The additive is prepared by adding water in the quicklime to produce lime cream; heating the water for acting as solution, after potassium permanganate, potassium chlorate and potassium dichromate are added into the solution and are stirred evenly; adding and mixing the methanol and tween-80 into the solution evenly, and then adding and mixing the lime cream into the solution evenly; finally adding and mixing the aether into the solution evenly; and preserving the heat for 1 hour. The invention can improve the desulfurization rate by 40 percent, improve the coal saving rate by 25 percent, and improve the thermal efficiency of the boiler by up to 5-10 percent; and can prevent the occurrence of boiler coking accident.

A modification of the rapid Golgi method.

Abstract: An extremely rapid Golgi procedure for immersion impregnation of the whole brain of the frog Rana esculenta is described. It uses an isotonic 2% osmium tetroxide solution buffered with sodium barbital at pH 7.2 that has previously been used for electron microscopy. To 15 ml of this solution 85 ml 3% potassium dichromate is added just before us. Twelve-hour treatments (6 hr in the chrome-osmium solution plus 6 hr in 0.75% silver nitrate) are sufficient to obtain consistently excellent impregnations of external brain formations. Twenty-four-hour treatments (12 hr in the chrome-osmium solution and 12 hr in the silver solution) impregnate also the deeper regions of the brain. The results show neuronal details on a clear background.

Chromium electroplating baths and method of electrodepositing chromium

Abstract: An aqueous acidic chromium electroplating bath comprising 200 to 550 g/l of chromium trioxide, 1 to 18 g/l of strontium sulfate, 2 to 30 g/l of potassium silicofluoride, 2 to 8 g/l of potassium dichromate and 4 to 50 g/l of 2,2-dichloromalonic acid or salt thereof.

Nephroprotective effects of methanolic extract of peucedanum grande against acute renal failure induced by potassium dichromate in rats

Abstract: Peucedanum grande has been found to be associated with the several therapeutic properties. In the current study, we have used P. grande as an ameliorating agent against nephrotoxic effects of Potassium dichromate. Potassium dichromate (K2Cr2O7) is a soluble hexavalent chromium compound that is extensively used in several industries. The rats were given pretreatment of P. grande orally at a dose of (60 and 120 mg/kg body weight) for five consecutive days 10 mg/kg b.wt was used as renal toxicant, and injected subcutaneously in the neck region in a volume of 1 ml/kg. The modulatory effects of P. grande on Potassium dichromate induced nephrotoxicity was investigated by assaying oxidative stress biomarkers, lipid peroxidation, serum kidney toxicity markers and by histopathological examination of kidney. P. grande pretreatment prevented deteriorative effects induced by Potassium dichromate through a protective mechanism that involved reduction of increased oxidative stress as well as by restoration of histopathological change against Potassium dichromate administration.