The study of pharmaceuticals in the environment is a relatively new area of research which has been constantly gaining interest. The scientists investigated the fate and behavior of benzimidazole antiparasitics in manure and manured soils under laboratory as well as under field conditions. The article is available for free at www.clean-journal.com.
In recent years, there has been growing interest in the question, if the entry of veterinary medicinal products (VMP) into soils via manure application is of environmental relevance. In a recent study, published in the November issue of the journal CLEAN, Kreuzig and co-workers focused on the as yet less investigated benzimidazole antiparasitics, adding valuable data to the data set currently available on fate and behavior of veterinary medicinal products in manure and manured soils.
An innovative experimental design for laboratory tests on VMP has been developed in order to simulate the real entry route of VMP into soil environments already under laboratory conditions. Degradation tests of VMP as 14C-labeled radiotracers in manures were conducted. On this basis, test manures containing 7-day aged VMP residues were prepared and then applied in laboratory batch tests to study degradation and sorption of VMP in manured soils. In further tests, the differentiation of microbial, chemical and photoinduced degradation were taken into account. Finally, test-plot experiments were performed under field conditions to monitor the transferability of the laboratory data to field conditions.
The benzimidazole antiparasitics flubendazole and fenbendazole mainly remained extractable in pig manure and soil samples. Antibiotics like sulfonamides, in contrast, rapidly formed non-extractable residues. Flubendazole was found unchanged while fenbendazole was accompanied by corresponding metabolites. Due to their slow degradation in pig manure, the manure storage is not considered to reduce substantially the environmental exposure. As shown by the sorption tests, both benzimidazoles did not fulfill the criteria of potential leachers. Finally, the degradation tests showed the dependence of the metabolic fate on the microbial activity in soil and on the test-manure application. These aspects, therefore, emphasized that the consideration of manure effects already under laboratory conditions supports a better understanding of the environmental fate of VMP under field conditions.
The article is published in the current issue of the journal CLEAN – Soil, Air, Water (A Journal of Sustainability and Environmental Safety) and is freely available at www.clean-journal.com.
Dr. Vera Köster | alfa
New technique reveals details of forest fire recovery
17.05.2018 | DOE/Brookhaven National Laboratory
Mixed forests: ecologically and economically superior
09.05.2018 | Technische Universität München
At the LASYS 2018, from June 5th to 7th, the Laser Zentrum Hannover e.V. (LZH) will be showcasing processes for the laser material processing of tomorrow in hall 4 at stand 4E75. With blown bomb shells the LZH will present first results of a research project on civil security.
At this year's LASYS, the LZH will exhibit light-based processes such as cutting, welding, ablation and structuring as well as additive manufacturing for...
There are videos on the internet that can make one marvel at technology. For example, a smartphone is casually bent around the arm or a thin-film display is rolled in all directions and with almost every diameter. From the user's point of view, this looks fantastic. From a professional point of view, however, the question arises: Is that already possible?
At Display Week 2018, scientists from the Fraunhofer Institute for Applied Polymer Research IAP will be demonstrating today’s technological possibilities and...
So-called quantum many-body scars allow quantum systems to stay out of equilibrium much longer, explaining experiment | Study published in Nature Physics
Recently, researchers from Harvard and MIT succeeded in trapping a record 53 atoms and individually controlling their quantum state, realizing what is called a...
The historic first detection of gravitational waves from colliding black holes far outside our galaxy opened a new window to understanding the universe. A...
A team led by Austrian experimental physicist Rainer Blatt has succeeded in characterizing the quantum entanglement of two spatially separated atoms by observing their light emission. This fundamental demonstration could lead to the development of highly sensitive optical gradiometers for the precise measurement of the gravitational field or the earth's magnetic field.
The age of quantum technology has long been heralded. Decades of research into the quantum world have led to the development of methods that make it possible...
02.05.2018 | Event News
13.04.2018 | Event News
12.04.2018 | Event News
22.05.2018 | Life Sciences
22.05.2018 | Earth Sciences
22.05.2018 | Trade Fair News