this study reports the synthesis of chitosan anchored schiff base, ([2-oxo-1h-indol-3-ylidene] amino) chitosan and its cu (ii) metal complex. the complex was characterized by elemental analysis, ft-ir spectrum, thermogravimetry analysis .the crystallinity of the compound was analyzed by powder x-ray diffraction technique. the catalytic efficiency of complex was studied in the oxidation of alcoh...

this article present the result from a study of two sediment cores collected from theenvironmentally distinct zones of ces. accumulation status of five toxic metals: cadmium (cd), chromium(cr), cobalt (co), copper (cu) and lead (pb) were analyzed. besides texture and chns were determined tounderstand the composition of the sediment. enrichment factor (ef) and anthropogenic factor (af) wereused ...

The content of 12 elements in Cambodian dried striped snakehead fish was determined using inductively coupled plasma mass spectrometry. The present study compares the level of the trace toxic metals and nutritional trace elements in the fish processed using solar drying system (SDS) and open sun drying (OSD). The skin of SDS fish has lower level of As, Pb, and Cd compared to the OSD sample. As ...

Toxicological hazard and risk assessment until today largely rely on animal toxicity data. Animal toxicity tests are performed to identify the toxic effects that a chemical can induce (hazard identification) and to determine the toxic potency, i.e. the quantitative relationship between external exposure level (administered dose, environmental concentration) and the incidence and severity of tox...

An attempt was made to compare between easy and inexpensive qualitative method (ammonia vapour test) and analytical methods (thin layer chromatography and enzyme-linked immunosorbent assay) for identification of aflatoxigenic isolates of Aspergillus flavus in maize. In this comparative study the toxicity level of A. flavus isolates exhibited 100% agreement among ammonia vapour test, ELISA and T...

human activities have continuously increased the level of heavy metal ions circulating in the environment. it is important to understand the tolerance of plant species to high concentrations of heavy metals. very little is known on the response of eucalyptus species to zn and cu toxic concentrations eucalyptus camaldulensis, e. microtheca, and e. occidentalis seeds were grown in silt and irriga...

Composite nanoparticles were synthesized by eco-friendly hydrothermal process and characterized by different spectroscopic techniques. All the spectroscopic techniques suggested the synthesis of well crystalline optically active composite nanoparticles with average diameter of ∼ 30 nm. The synthesized nanoparticles were applied for the development of chemical sensor which was fabricated by coat...

Toxic Effects of Low Level Lead on the Blood-Brain Barrier in Rats: Su-yun RUAN, et al. Shanghai Institute of Labour Hygiene and Occupational Diseases—This study was designed to invest igate damage to the permeabi l i ty and ultrastructure of the blood-brain barrier caused by low level lead by using Lanthanum nitrate tracing and to explore the blood and the brain lead threshold level which indu...

OBJECTIVE To determine the relationship between plasma zinc values and the severity of dengue viral infection (DVI) and DVI-caused hepatitis. METHODS A prospective cohort study was conducted during 2008-2010 in hospitalized children aged <15 years confirmed with DVI. Complete blood count, aspartate aminotransferase (AST), alanine aminotransferase (ALT), and zinc values (mcg/dL) were determine...

letter noting the absence of public involvement in this process makes 2 relevant but, in my opinion, inadequate points: (1) the public had the opportunity to react to drafts of the code on the American Public Health Association Web site and (2) feedback was solicited “from a broad range of stakeholders, including the public.” The response does not mention even one non–health professional person...