Iodine determination in food samples was performed by inductively coupled plasma mass spectrometry (ICP-MS) after digestion by microwave-induced combustion (MIC). Sample masses up to 500 mg of bovine liver, corn starch, milk powder, or wheat flour were completely combusted using the MIC system. Ammonium nitrate (6 mol l(-1) solution, 50 μl) was used as an aid for ignition and vessels were charg...

Triphenylchloromethane (TPCM) is reduced by zinc in a benzene solution, giving an intense yellow solution of triphenylmethyl (TPM), the first known stable free radical. In the solution, the free radical is in equilibrium with the dimer – 3-diphenylmethylidene-6-triphenylmethylcyclohexa-1,4-diene. The reactivity of TPM is demonstrated in reactions with oxygen and iodine, using a purpose built re...

Many methods of assaying penicillinase activity have been devised (N. Citri and M. R. Pollock, Advan. Enzymol. 28:237, 1966; N. Citri, Methods Med. Res., 10:221, 1964; J. M. T. HamiltonMiller et al., J. Pharm. Pharmacol. 15:81, 1963; D. A. Wolfe and M. Hamberger, J. Lab. Clin. Med. 59:469, 1962). These have included colorimetric determinations of acid or alkali production, manometric techniques...

Oligodeoxyribonucleotides containing pseudorotationally locked sites derived from bicyclo[3.1.0]hexane pseudosugars have been synthesized using adenosine, thymidine and abasic versions of North- and South-methanocarba nucleosides. The reaction conditions for coupling and oxidation steps of oligonucleotide synthesis have been investigated and optimized to allow efficient and facile solid-phase s...

BACKGROUND Graves' disease is a common cause of hyperthyroidism. Three therapies have been used for decades: pharmacologic therapy, surgery and radioiodine. In case of adverse events, especially agranulocytosis or hepatotoxicity, pre-treatment with Lugol's solution containing iodine/potassium iodide to induce euthyroidism before surgery could be advocated, but this has rarely been reported. M...

Individual and simultaneous electrochemical detection of iodide and iodine has been performed via cyclic voltammetry on boron doped diamond (BDD) electrodes in a 1M NaClO(4) (pH 8) solution, representative of typical environmental water conditions. It is feasible to compute accurate calibration curve for both compounds using cyclic voltammetry measurements by determining the peak current intens...

To the Editor, Th? Indian Mivdicai, Gazette. Sir,?We have been using iodine intravenously in all cases of sores which become septic from a slight injury. The patients are all coolie labourers working in manganese and iron mines and the site of the sore is generally on the foot, downwards. These sores are very similar toNaga sore as described in your Gazette. The result of iodine injections is q...

TO THE EDITOR: Needlestick injuries are inevitable during surgery, particularly if operating hurriedly by “feel” in blood-obscured fields, such as in Caesarean sections. The risks associated with these injuries were accentuated by the advent of the HIV pandemic. While working in rural Zimbabwe, an article describing Betadine inactivating HIV in an infected cell culture, with the cells surviving...

Albeit uncommon occurrence, irritant contact dermatitis induced by povidone iodine can be an unfortunate adverse reaction complicating its use as an antiseptic. We hereby present the case report of a patient who suffered such a reaction as a result of exposure to povidone iodine, employed as an antiseptic during spinal anesthesia. On conservative management with soframycin ointment, the lesions...

This study introduces two new processes that highly enable PEDOT:PSS (poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)) as stable coating material for chronic neural stimulation. In first process, strong mechanical bonding between PEDOT:PSS coating and gold electrodes is achieved by creating rough porous surface with partial iodine etching. PEDOT:PSS coating on iodine etched gold electro...