Microbial conversion behavior was investigated with several standard arsenicals. As typical origin of marine micro-organisms, sediments, macro-algae, mollusk intestine and suspended substances were used. The degradation of arsenobetaine was observed with every origin, suggesting the ubiquitous occurrence of arsenobetaine-decomposing microorganisms in marine environment. Especially, the microorg...

We have described the methods used in determining the influence of certain substances on tumor growth, and we measured approximately the degree of reliability of the quantitative method used. We examined with these methods various classes of substances,- distilled water, a number of inorganic salts, inorganic colloidal substances, various organic colloidal and non-colloidal substances, especial...

More than thirty million inorganic and organic substances are registered by the Chemical Abstract Service (CAS). About 600,000 are commonly used in industry and several thousand new molecules are created each year as the result of research. More than 25,000 irritant and corrosive chemicals have been identified as having the potential to cause burns. In Europe, 104,031 commercial chemical substa...

An impedimetric sensor for persistent toxic substances, including organic pollutants and toxic inorganic ions is presented. The persistent toxic substances are detected using an ultrasensitive technique that is based on electron-transfer blockage. This depends on the formation of guest-host complexes, hydrogen bonding, or a cyclodextrin (CD)-metal complex (Mm(OH)n-β-CD) structure between the ta...

The need for a long-term sustaining of optimal concentrations applied pesticides in the soil agriculture resulted development systems controlled release active substances. Such are based on use eco-friendly carrier materials that harmless to plants, humans and environment. Inorganic substances (e.g., clays or alike substances), biodegradable polymers natural synthetic origin, blends such their ...

The World Health Organization (WHO) has established guidelines for drinking-water quality that cover biological and chemical hazards from both natural and anthropogenic sources. In the most recent edition of Guidelines for Drinking-water Quality (2011), the WHO withdrew, suspended, did not establish, or raised guidelines for the inorganic toxic substances manganese, molybdenum, nitrite, aluminu...