Dioxins/furans and dioxins denote the group of 210 possible chlorine-substituted dibenzo-p-dioxins and dibenzofurans, that have similar structures and chemical properties. These compounds have no commercial use, they are only trace pollutants emitted by thermal processing of organic matter and chlorine or chlorinated organic compounds; as a result of incomplete combustion or chemical reactions. Being persistent organic pollutants (POPs) they are resistant to degradation in the environment, migrate through air and water far from the source, accumulate in terrestrial and aquatic ecosystems, with acute and chronic toxic effects on human and animal organisms. The aim of this paper is to analyze the reported atmospheric emissions of dioxins in all 42 counties in Romania during 1999-2009. It was found that dioxin emission increased over time since 1999. The main source for dioxin emissions is the energy sector, as well as industry, transport, medical waste burning.

During the artificial reproduction of salmonides, the fecundity can be increased either by improving the viability of spermatozoa, or by extending the time period during which a roe micropile remains open, thus allowing its fecundation. Practically, this can be achieved by the use of some fertilising techniques suitable for fish species. Here, we show that the reproduction of rainbow trout in a 1:1 solution of deuterium-depleted water and distilled water led to a significant increase in survival of roes during their embryonic development. Moreover, the addition of glucose and fructose into the deuteriumdepleted fertilising solutions led to a further increase in roe survival during embryonic development. The increase in survival is mainly explained by an increase in the motility of spermatozoa.

Administration of DDW (deuterium depleted water) represents a proper method to reduce deuterium in biological systems. In present study experiments were performed in order to observe the deuterium's concentration decrease in laboratory animals' bodies using DDW as depleting agent, the main ingredient for the commercial product QLARIVIA™ 2. Deuterium depletion studies were elaborated on laboratory animals, nourished with standard food and drinking water, respectively DDW. Biological samples were analyzed through mass-spectrometry. The results showed that in natural conditions, the mammals' organisms have the tendency to accumulate deuterium through bioaccumulation process. As a conclusion it can be noticed that the grade of deuterium depletion from mammals' bodies seems to be especially under the influence of DDW's concentration and of administration's period of time.

The paper presents theoretical and experimental data concerning mass and heat transfer on B7 structured packing, used for deuterium separation in distillation column. The first section of the paper is dedicated to mass transfer study for hydrogen distillation, and the second section to mass and heat transfer for water distillation. Mathematical model verification was carried out with experimental data, obtained from two laboratory distillation plants for deuterium separation. The experimental data concerning B7 ordered packing efficiency for hydrogen cryogenic distillation at about –250 °C level were obtained from the first plant, and the second plant provided data concerning mass and heat transfer on the same packing for deuterium separation by water vacuum distillation at about 60 °C level. Height of transfer unit and mass and heat transfer coefficients, evaluated theoretically and experimentally, are comparable with those from chemical industry separation processes. This fact justifies the use of multi-tubular column model or transfer process description at distillation column equipped with B7 structured packing

Deuterium content of living animals body can be increased, with dramatical effect over the health state, through bioaccumulation process by continuously adding of heavy water in their nourishment. On the other hand, deuterium depletion has been mentioned in literature as a health stimulator and a new possible anticancer tool. In this context, the present paper investigated the deuterium depletion process at chickens (breed Plymouth Rock, white variety), after DDW's (deuterium depleted water) administration. Chickens were raised and nourished with standard food and drinking water, respectively DDW. Liquid and solid samples were analyzed through mass-spectrometry for isotopic deuterium content. The results showed that DDW's administration decreased the isotopic content in deuterium in chickens' bodies. The deuterium depletion is made in time and it is a process which affects the entire organism.