The paper is devoted for origin of microplastics in aquatic environment and possible methods characterization analysis. According to US National Oceanic Atmospheric Administration, are synthetic organic polymer particles with a size less than 5 mm. Microplastics pollution significant ecological problem the world. A lot surface waters significantly polluted by various types microplastics. These ...

A novel gold nanoparticle-modified graphite pencil electrode (AuNP-GPE) is prepared just by immersing a bare GPE in AuNP solution, followed by heating for 15 min. The bare and modified GPEs are characterized by FE-SEM imaging and cyclic voltammetry. The AuNP-GPEs showed excellent electrocatalytic activities with respect to hydrazine oxidation, with good reproducibility. To reduce the quantifica...

There are approximately 470,000 km(2) of karst aquifers that feed many large springs in North China. Turbulent flow often exists in these karst aquifers, which means that the classical ground water model based on Darcy's law cannot be applied here. Ground water data are rare for these aquifers. As a consequence, it is difficult to quantitatively investigate ground water flow in these karst syst...

Shale gas is currently being explored in Europe as an alternative energy source to conventional oil and gas. There is, however, increasing concern about the potential environmental impacts of shale gas extraction by hydraulic fracturing (fracking). In this study, we focussed on the potential impacts on regional water resources within the Baltic Basin in Poland, both in terms of quantity and qua...

The quality of -water contained in the different tanks varie8 as the tank is more or less exposed to deteriorating influences ; some of them have a reputation, based for the most part on forgotten traditions, for yielding unusually good water, and the conservatism of the place is willing to uphold such reputation against adverse arguments or appearances ; for exammle?? it was stoutly denied a f...