As one of the eight largest freshwater lakes in China, Wuliangsuhai Lake is an extremely rare large lake with biodiversity and environmental protection functions world’s arid or semi-arid areas it plays a pivotal role protecting ecological security Yellow River Basin. Heavy metals sediment interstitial water, surface sediments, cores were investigated analyzed, pollution degree evaluated based ...

We reevaluate the treatment of mercury poisoning, incorporating recent advances in understanding toxicity and mercury:selenium interaction. This review focuses on: 1) role, limitations benefits chelation (Unithiol, succimer N-Acetylcysteine); 2) role selenium supplementation; 3) how different forms are impacted by use selenium. Unithiol produce increases urinary excretion to a lesser degree blo...

Owing to various industrial applications of mercury (Hg), its release into the environment at high concentration is becoming a great threat living organisms on global scale. Human exposure Hg greatly correlated with contamination in food chain through cereal crops and sea foods. Since non-essential component does not possess biological role exhibits carcinogenic genotoxic behaviour, biomonitori...

The toxicity of Cu, Mn, Mo, Ni, V, As, Pb, Cr, Hg and Sn on the behaviour and survival of benthic worms Tubifex tubifex was studied. All tested metals were dissolved and determined in tap water under standardized conditions. The adverse effects of the metals were evaluated as acute toxicological effects upon exposure expressed as LC50 value with 95% confidence interval. On the basis of the LC50...

Ingested pollutants may elicit digestive toxicity following incorporation into consumer tissues. This post-assimilatory toxicity may include tissue damage influencing synthesis of digestive enzymes, gut transit time and absorption of nutrients as well as pollutants by the gut epithelium. This study investigated impacts of chronic field exposure on gut residence time (GRT), feces elimination rat...

Surveillance for mercury (Hg), lead (Pb) and cadmium (Cd) contamination in tuna products is crucial for consumer food safety. Hg, Pb and Cd contaminants were monitored in a total of 60 specimens of fresh little tunny (Euthynnus alletteratus) and popular brands of skipjack and yellowfin (Katsuwonus pelamis and Thunnus albacares) canned tuna commercially available in Tripoli, Libya. Direct Mercur...

Two detoxification mechanisms working in the marine diatom Thalassiosira weissflogii to cope with mercury toxicity were investigated. Initially, the effect of mercury on the intracellular pool of non-protein thiols was studied in exponentially growing cultures exposed to sub-toxic HgCl(2) concentrations. T. weissflogii cells responded by synthesizing metal-binding peptides, named phytochelatins...

At present, there is a considerable interest in Hg monitoring in wastewater samples due to its widespread occurrence and the high toxicity of most of its compounds. Hg determination in water samples by means of total reflection X-ray fluorescence spectrometry (TXRF) entails some difficulties due to the high vapor pressure and low boiling point of this element that produce evaporation and loss o...

Mercury (Hg) in children has multiple exposure sources and the toxicity of Hg compounds depends on exposure routes, dose, timing of exposure, and developmental stage (be it prenatal or postnatal). Over the last decades, Hg was widely recognized as a threat to the children's health and there have been acknowledgements at the international level of the need of a global policy intervention-like th...