A bioassay for the possible carcinogenicity of N-(1-naphthyl)ethylenediamine dihydrochloride was conducted using Fischer 344 rats and B6C3F1 mice. N-(1-Naphthyl)ethylenediamine dihydrochloride was administered in the feed, at either of two concentrations, to groups of 50 male and 50 female animals of each species. Twenty-five rats of each sex and 50 mice of each sex were placed on test as contr...

background: nitrogen oxides occur in the atmosphere in six forms of namely: n2o , no , no2 , n2o3, n2o4 and n2o5 .among these oxides no2 is the most important air pollutant because of its relatively high toxicity and its ubiquity in ambient air. in this research griess-saltzman method was utilized for determination of nitric oxide and nitrogen dioxide in the atmosphere of different laboratories...

Silicon quantum dots obtained by the reaction of magnesium silicide with ethylenediamine dihydrochloride were utilized to investigate the sensing mechanism and sensitivity for DMNB detection applications. Sensing DMNB provided us with evidence that Si QDs with a higher lying conduction band have better sensitivity compared to CdSe QDs.

We describe a modified colorimetric method for determining procainamide in plasma by use of a diazotization and coupling reaction with N-(1-naphthyl)-ethylenediamine dihydrochloride (Marshall's reagent). The sensitivity of the assay is increased twofold over the originally reported colorimetric method, and the lower limit of detection for the assay of a 1.0-ml plasma sample has been decreased t...

BACKGROUND Five workers from a plant manufacturing concrete wall panels and beams were referred to our department because of suspected occupational dermatitis. When patch tested, 3 workers reacted to potassium dichromate. Four workers reacted to ethylenediamine dihydrochloride, without any obvious exposure. Owing to the high proportion of workers with recent-onset skin disease, an investigation...

BACKGROUND Compounds containing ethylenediamine (-NCH2CH2N-) moiety are known to exhibit antimicrobial, -fungal, -bacterial, -tuberculosis and -cancer activities. MATERIALS AND METHODS In the present study, we evaluated the in vitro cytotoxic activity of N,N'-bis(2-hydroxybenzyl)- (6), N,N'-bis(5-bromo-2-hydroxybenzyl)- (7) and N,N'-bis(5-chloro-2-hydroxybenzyl) (8)- ethylenediamine dihydroch...

Two simple, sensitive and precise spectrophotometric methods for the assay of cefixime in either pure form or its pharmaceutical dosage are described. The method I is based on reaction salicylaldehyde with resulting a yellow coloured product, absorbs at λmax 425 nm. second describes between diazotized drug N-(1-naphthyl)ethylenediamine dihydrochloride to yield purple product 567 conditions were...

The aim of this research is to determine the optimum concentration coupling agent used in chloramphenicol analysis, then calculate limit detection that photometric reaction. Chloramphenicol a colorless compound often abused animals whose products are consumed by humans. has side effects on human body. So, must be analyzed. To facilitate analysis process, converted into colored compounds called ...

The Jendrassik--Groff assay for direct bilirubin was adapted for analysis rates of 150/h on the Technicon "SMAC" continuous-flow analyzer. This requires development of a standard that is compatible with the other 19 channels on this analyzer. N-1-Naphthyl ethylenediamine dihydrochloride has been used for standardization of direct bilirubin assays, but we found it to be unsuitable because values...