Elena G. Panova

• Professor at St Petersburg University

The shortage of liquid and gaseous fossil fuels in the world growing day by day has led to intensive searches for new energy sources. The focus on solid fuels has increased dramatically, particularly on oil shales and brown coals, the world reserves of which significantly exceed the known reserves of liquid hydrocarbons combined. Moreover, solid...

The focus of this ongoing study has been on two rapakivi granites, wiborgite and pyterlite, that have been utilized in St Petersburg since the 1760s but originate from south-eastern Finland. The aims of this study have been to describe the two types of rapakivi granites in their geological settings, to assess the needs for restoration of stones uti...

The stone buildings and monuments of Kiel (Germany) is a World Heritage Site. Granite, sandstone and limestone are used in architectural structures. As a result of the study of cyanobacteria in biofilms on the surface of stone structures and monuments in the city of Kiel, 28 species taxa, 18 genera were identified. Phormidesmis sp. is the most comm...

A number of urban soils of St. Petersburg on the Littorina terrace were studied. рНН2О, the carbon content of organic compounds, СаСО3 , and mobile phosphorus compounds, particle size distribution, and the content of heavy metals (HM) — Pb, Cu, Zn were determined in soils according to common methods. The studied soils were alkaline, had an increase...

For the Altai Mountains' region, especially the arid southeastern part of the Russian Altai, the data on glacier fluctuations in the Pleistocene and Holocene are still inconsistent. The study area was the Kargy River's valley (2288-2387 m a.s.l.), a location that is not currently affected by glacia-tion and the glacial history of which is poorly st...

The natural radioactivity data revealed that eU reached up to 157.4, 1625 and 178 ppm in microgranite and dolerite dikes as well as japer vein, respectively, whereas the two-mica granite possesses the higher eTh-contents up to 53.8 ppm. Mineralogically, the two-mica granite is enriched in thorite, brockite and uranothorite, whereas uraninite and co...

Add full-text Save Share on Twitter Abstract The natural radioactivity data revealed that eU reached up to 157.4, 1625 and 178 ppm in microgranite and dolerite dikes as well as japer vein, respectively, whereas the two-mica granite possesses the higher eTh-contents up to 53.8 ppm. Mineralogically, the two-mica granite is enriched in thorite, brock...

The intrusive rocks in El Sela area can be arranged from the oldest to the youngest into: two-mica granite and postgranitic dikes which include microgranite, dolerite and bostonite dikes. Zircon is the most abundant accessory mineral. Zircon morphology and geochemical features are good indicators for evolution of rocks. The aim of the work is to de...

The aim of this work is to identify the mineral and chemical composition of wastes from plant for mechanized processing of solid wastes. The work investigated the structure, mineral and chemical composition of industrial dumps, placed in the surrounding territory of the plant, without the proper system for collecting the filtrate. The main attentio...

Rapakivi granites were in use during the Middle Ages in Finland. Their most spectacular use, however, was for structures built in St Petersburg between 1760 and 1917. Remarkable examples are the majestic and slender Alexander Column and the 112 columns of St Isaac's Cathedral. All Rapakivi granite was extracted from the Wiborg Rapakivi granite bath...

Interdisciplinary study of granite rapakivi biofouling in the natural and anthropogenic environment (St. Petersburg, Vyborg, Southern Finland) was carried out. The biodiversity of microorganisms (cyanobacteria, micromycetes, and organotrophic bacteria) and various types of biofilms are characterized. The influence of external factors on the changes...

A certified reference material, NIMD-01, was developed for the analysis of mercury speciation in human hair. We collected the hair of Vietnamese males from a barbershop in Hanoi in 2016 and prepared 1200 bottles containing 3 g of sieved and blended hair powder. The certified value was given on a dry-mass basis, with the moisture content obtained by...

The book represents a collection of papers presented at VI International Symposium "Biogenic - abiogenic interactions in natural and anthropogenic systems" that was held on 24-27 September 2018 in Saint Petersburg (Russia). Papers in this book cover a wide range of topics connecting with interactions between biogenic and abiogenic components in lit...

In the Egypt's Eastern Desert intrusive rocks with U-REE mineralization (two-mica granites, microgranites, dolerites, and bostonites) are developed. We estimated the content of chemical elements in reference samples of intrusive rocks and also in their water-soluble (colloid-salt) fraction. This fraction is water-extracted from the rock under certa...

The organic matter- and uranium-rich Tremadocian Koporie Formation (“Dictyonema Shale” as traditional informal unit; 6–14 wt.% TOC, 74–274 ppm uranium) was studied with respect to the spatial and temporal distribution of the uranium contents in the shale since deposition. It was the aim to unravel organic-inorganic interactions as results of α-part...

An interdisciplinary study was carried out to unravel organic-inorganic interactions caused by the radiogenic decay of uranium in the immature organic-rich Alum Shale (Middle Cambrian-Lower Ordovician). Based on pyrolysis experiments, uranium content is positively correlated with the gas-oil ratios and the aromaticities of both the free hydrocarbon...

The report analyses the main properties pertaining to the durability of Finnish granitoid rocks, based upon extensive field and laboratory data collected during the past ten years. Commercial materials have been tested and compared along ten years of production and their frost resistance assessed according to European standards. Laboratory tests ha...

The mercury concentration in coal varies in a wide range with the world average (the Clarke value) of 100 ppb. Mercury in coal can be represented by various forms having different matrix binding energy that govern different properties and behavior both in geochemical cycling and in technological processing. The technique of gradual heating (thermos...

Various aspects of the granite destruction in urban environments were studied in cities of Northern Europe (Russia and Finland). Granite is commonly used to create monuments, buildings, and embankments. Rock degradation is associated with physical, chemical, and biological factors. In this chapter, the main forms of granite destruction are describe...

Subaerial exposure and oxidation of organic carbon (Corg)-rich rocks is believed to be a key mechanism for the recycling of buried C and S back to Earth’s surface. Importantly, processes coupled to microbial Corg oxidation are expected to shift new biomass δ13Corg composition towards more negative values relative to source. However, there is scarci...

The behavior of some chemical elements was studied in soils and their liquid phase. Two reference soil profiles on glaciolacustrine clays (soddy-eluvial-metamorphic soil) and sands (soddy podzol) were investigated on the Russian Plain. A colloidal fraction (particles <1 μm) was isolated with deionized hot water from a soil sample of 30 g at the soi...

Black shales (BS) accumulate economic and biologically important trace metals such as Re, precious metals, U, V, Mo, Cu, Ni and Co above expected Clarke concentrations. We extracted colloid-salt fraction with particle size <1000 nm from BS with water under special conditions. In nano-fraction the detection limit for rare and trace elements are lowe...

Black shales of the Early Paleozoic age are widespread in Sweden, forming part of the Baltic paleobasin, sediments of which are also known in Estonia and Leningrad region of Russia. Black shales accumulate chemical elements, contents of which exceed the Clarke values: Re - 700, Ag - 12, U - 10, Mo - 10, Pd - 4.7, V - 4.2, Pt - 3.5, Au - 3 times. Co...

Rapakivi granites are a widely used in architectural ensembles of St. Petersburg. The history and examples of their application from 1760s are here reviewed. The geological map of the Vyborg massif is given made on the basis of materials from Finnish and Russian geologists. Places of mining granites which have been used in St. Petersburg are shown...

Evaluation of the durability of granite in architectural monuments was carried out as part of the project “Efficient use of natural stone in the Leningrad region and South-East Finland”. The focus of the research was on rapakivi granite, since it is the most common and most widely used local stone material. The main aim was to examine how the natur...

Granite-rapakivi was widely used in the architecture of St. Petersburg: the facades of buildings, embankments of rivers and canals, bridges, sculptural monuments, pedestals, facing the metro stations. This stone is rapidly destroyed due to the peculiarities of its structure. Biofouling of granite is insufficiently studied. Cause the destruction of...

A three-year project, started in 2012, "Efficient use of natural stone in the Leningrad region and South-East Finland", studies the use and durability of natural stone in the city environments in the Nordic climate and especially along the Eastern Baltic Sea coastline between Helsinki and St. Petersburg. The project is lead by the Geological Survey...

Colloid-salt fraction (nanofraction) is extracted by water from a rock sample under the special conditions. The size of particles of this fraction is less than 1000 nm. The sample of rock and its nanofraction are analyzed by inductively coupled plasma mass spectrometry method (ICP MC method). The carried out researches have shown that the analysis...

The mineral and chemical composition of Priozersky suite cement sandstones accommodating a uranium deposit of Karku discordance type located on the north-eastern shore of Lake Ladoga is studied. The selection performed and the study of cement sandstones apart from detrital matrix allows to divide the geochemical signals of different by composition...