Bacterial dehalogenases catalyse the cleavage of carbon-halogen bonds, which is a key step in aerobic mineralization pathways of many halogenated compounds that occur as environmental pollutants. There is a broad range of dehalogenases, which can be classified in different protein superfamilies and have fundamentally different catalytic mechanisms. Identical dehalogenases have repeatedly been d...

1. INTRODUCTION Over the past 60 years, for the reasons shown in Figure 1, the engineering industry has found halogen-containing cleaning solvents to be technically very effective. More recently, the chemical inertness, non-flammability, low toxicity and convenience of 1,1,2-trichlorotrifluoroethane, has led to the wide use of products based on CFC-113 in electronics applications. Evidence of t...

Since the 1970s, an increasing number of regulations have expanded the use of brominated and chlorinated flame retardants. Many of these chemicals are now recognized as global contaminants and are associated with adverse health effects in animals and humans, including endocrine and thyroid disruption, immunotoxicity, reproductive toxicity, cancer, and adverse effects on fetal and child developm...

Abstract Presented herein is an experimental study on the organohalogen polymer smoke agent. In box experiment, transmittance of agent at 3-5 μm and 8-14 was used as index, effects each factor anti-infrared performance were analyzed by orthogonal test method. The results showed that main factors affecting extinction properties in infrared band zinc magnesium mass ratios Zn-Mg alloy powders, Par...

Fish is an important part of our food. In addition to its general nutritional value fish contains essential nutrients like omega-3 and omega-6 fatty acids, which are believed to be beneficial for our health. Fish is also an important dietary source of selenium. Unfortunately, several contaminants are present in fish, such as heavy metals and organohalogen contaminants. Well-known examples of th...

Many marine algae are strong accumulators of halogens. Commercial iodine production started by burning seaweeds in the 19th century. The high content certain has potential pharmaceutical and nutritional applications. While metabolism brown is linked to oxidative metabolism, with iodide serving function an inorganic antioxidant protecting cell thallus surface against reactive oxygen species impl...