1. The rate of the saponification of iodoacetic acid in sodium hydroxide and alkaline buffer solutions yielding glycollic acid was measured by means of Heyrovský's polarographic method. 2. From the bimolecular velocity constants, increasing with the ionic strength of the solution, the Brönsted factor, F, which characterizes the primary salt effect, was calculated. 3. In the borate buffer soluti...

zinc sulphate and boric acid ophthalmic preparations, containing benzalkonium chloride as preservative, have been investigated against gram-negative and positive bacteria. viability of bacteria was found after 7 days, although it was completely suppressed after 24 hours of inoculation. zinc sulphate generally increases the antimicrobial activity of benzalkonium chloride, whereas boric acid or i...

To the best of our knowledge, this is the first study concerning the effect of boric acid (BA) administration on fetal alcohol syndrome (FAS). In this study, the aim was to investigate prenatal alcohol-induced oxidative stress on the cerebral cortex of newborn rat pups and assess the protective and beneficial effects of BA supplementation on rats with FAS. Pregnant rats were divided into three ...

Freeze-dried, granular sugar baits containing boric acid as the toxicant were evaluated against house ßies,Musca domesticaL., in two bioassays with toxicant dose ranges of 3, 5, 7, 8, and 12%, and 3, 5, 9, 17, and 33% boric acid, respectively, calculated and expressed on a dry weight basis. Flies in bioassay 1 were mixed sex and unstarved and ßies in bioassay 2 were females only and starved 4 h...

Accidental poisoning is not always recognized. If there is no leading history of the ingestion or exposure to poison the signs can easily be misinterpreted. In this way boric acid poisoning of infants may remain unsuspected, especially when it occurs by absorption through the skin. Boric acid has been in clinical use as an antiseptic for 80 years. Soon after its introduction for this purpose by...

some chemicals used by human such as food additives are mutagenic and mutagenicity effects analysis of them is very important because of considerable consumption by man. one of the most common methods used in the recognition of the chemicals' mutagenicity is salmonella typhimurium reverse mutation (ames) test. the purpose of the present study is mutagenicity effects analysis of sodium nitrite, ...

Pollution caused by boric acid and toxic anions such as As(V), Cr(VI) and Se(VI) is hazardous to human health and environment. The sorption characteristics of these environmentally significant ionic species on allophane-like nanoparticles were investigated in order to determine whether allophane can reduce their mobility in the subsurface environment at circum-neutral pH condition. Solutions co...

Free-volume hole-radii of the active skin layer of one seawater and two low pressure reverse osmosis (RO) membranes namely SWC5, ESPAB, and ESPA2 respectively were evaluated using positron annihilation lifetime spectroscopy (PALS) with a slow positron beam. The results were related to the rejection of boric acid and eight N-nitrosamines to provide insights to the transport of these small solute...

Elemental boron was isolated in 1808. It typically occurs in nature as borates hydrated with varying amounts of water. Important compounds are boric acid and borax. Boron compounds are also used in the production of metals, enamels, and glasses. In trace amounts, boron is essential for the growth of many plants, and is found in animal and human tissues at low concentrations. Poisoning in humans...