A chlorate reductase has been purified from the chlorate-reducing strain Pseudomonas chloritidismutans. Comparison with the periplasmic (per)chlorate reductase of strain GR-1 showed that the cytoplasmic chlorate reductase of P. chloritidismutans reduced only chlorate and bromate. Differences were also found in N-terminal sequences, molecular weight, and subunit composition. Metal analysis and e...

Journal of the American Chemical Society is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Systematic design of chemical oscillators. 17. Birhythmicity and compound oscillation in coupled chemical oscillators: chlorite-bromate-iodide system Mohamed Alamgir, and Irving R. Epstein J. Am. Chem. Soc., 1983, 105 (8), 2500-2502• DOI: 10.1021/ja00346a080 •...

The investigation of renal function in health or disease demands a reliable method for the estimation of diodone in blood and urine. The methods of Alpert (1941), Flox, Pitesky & Alving (1942), Corcoran & Page (1943) all involve the use of bromine to split iodine from the diodone molecule and to convert this into iodate. Having had a fairly wide experience in the use of diodone in the estimatio...

Carboxypeptidase and protease activities of hormone-treated barley (Hordeum vulgare cv Himalaya) aleurone layers were investigated using the substrates N-carbobenzoxy-Ala-Phe and hemoglobin. A differential effect of gibberellic acid (GA(3)) on these activities was observed. The carboxypeptidase activity develops in the aleurone layers during imbibition without the addition of hormone, while the...

We used conventional ozonation and the AOP O3/H2O2 to estimate the required energy to achieve the desired pre-defined level of oxidation of target organic micropollutants by hydroxyl radicals. We used the probe compound para-chloro benzoic acid (pCBA) to assess the fraction of OH available for oxidation of micropollutants. pCBA reacts slowly with O3 but reacts very fast with OH (kOH,pCBA = 5 x ...

Recent research projects have shown a good suitability of the ozonation process to transform trace concentrations of most pharmaceuticals in wastewater treatment plant (WWTP) effluents. The concentrations of carbamazepine and 17 alpha-ethinylestradiol, for instance, were reduced below their detection limits by use of ozone dosages resulting in a specific ozone consumption of 0.5 mg O3/mg DOC0. ...

Kinetic investigation in Ru(III) catalyzed oxidation of D(+)-galactose and lactose in an alkaline solution of potassium bromate in the presence of mercuric acetate as a scavenger for Br – ion has been carried out in the temperature range 30-45°C. The rate shows first order dependence with respect to the bromate and zeroth order with respect to the substrate (sugars). The reaction exhibits first...

Potassium bromate (KBrO3) is widely used as a food additive and is a major water disinfection by-product. It induces multiple organ toxicity in humans and experimental animals and is a probable human carcinogen. The present study reports the protective effect of dietary antioxidant taurine on KBrO3-induced damage to the rat intestine. Animals were randomly divided into four groups: control, KBr...