The composition determination of combustion products of modified ethanol

The paper evaluates the presence and content of traces of heavy metals Hg, Pb, Ni, Cd (total forms) from coal and solid combustion products, the degree of transfer and accessibility in the area of influence of a lignite power plant. The content of toxic heavy metals in residues are characterized by RE Meiji [ 1 (Pb and Hg) and REMeij �1 (Ni and Cd) for the filter ash. Pb and Ni content in the soil exceeds normal values, and Pb exceeds and alert value for sensitive soils around the residue deposit (70.20 mg.Kg-1). The degree of accessibility of the metals in plants (TF), reported at the Khan reference value (0.5), indicates a significant bioaccumulation level for the metals: Cd (1.9) and Hg (0.6) inside the deposit; Cd (0.39) at the base of the deposit, Hg (0.8) in the area of the thermal power plant. The trace levels of heavy metals analyzed by GFAAS and CVAAS (Hg), indicates a moderate risk potential for food safety and quality of life in the studied area.

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New method for initial composition determination of crystallized silicate melt inclusions

Chemical Geology ◽

10.1016/j.chemgeo.2018.02.038 ◽

2018 ◽

Vol 483 ◽

pp. 162-173 ◽

Cited By ~ 8

Author(s):

Laura Créon ◽

Gilles Levresse ◽

Laurent Remusat ◽

Hélène Bureau ◽

Gerardo Carrasco-Núñez

Keyword(s):

Melt Inclusions ◽

New Method ◽

Silicate Melt ◽

Initial Composition ◽

Composition Determination

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The concept of technological proximity in the development of European Union national innovative systems

Bulletin of Geography. Socio-economic Series ◽

10.2478/bog-2021-0003 ◽

2021 ◽

Vol 51 (51) ◽

pp. 35-45

Author(s):

Svetlana Rastvortseva ◽

Aizhan Amanalieva

Keyword(s):

European Union ◽

Economic Activity ◽

Industrial Sector ◽

High Tech ◽

The European Union ◽

Economic Sectors ◽

Composition Determination ◽

Comparative Advantages ◽

Degree Of Participation

Abstract The development of national innovative systems is intended to solve a number of issues: from decreasing socio-economic inequality in countries and regions to creating environments favourable to new high-tech production and diversification of industrial composition. Determination of the possibilities for expanding the set of innovative types of economic activity must be scientifically substantiated, since significant financial, material and human resources may be consumed in creating and supporting new economic sectors within the framework of state policy. This article contains an attempt to create a mechanism for revealing promising trends in the development of an innovative economic sphere, taking into account comparative advantages in the commodity composition of exports by determining technological proximity indicators. The article aims to substantiate the possibility of using the concept of technological proximity in developing national innovative systems. The study employs technological proximity indicators based on the revealed comparative advantages (RCA) of countries by commodity groups of export. A matrix of technological proximity in the industrial fields (at a six-unit level) for 28 countries of the European Union in 2007–18 was made. The results revealed comparative advantages by groups of high-tech products in EU countries in real time. The analysis of technological proximity in the industrial sector has shown the types of economic activity connected with the innovative sector, which was used to determine the countries’ degree of participation in the manufacture of high-tech products. The proposed mechanism can be used in the development and implementation of national and regional policy in the sphere of innovative systems, since it allows promising areas for creation and support of new high-tech productions to be determined.

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Simplified Version of the Ampoule–Persulfate Method for Determination of Dissolved Organic Carbon

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f87-029 ◽

1987 ◽

Vol 44 (1) ◽

pp. 214-218 ◽

Cited By ~ 24

Author(s):

William H. McDowell ◽

Jonathan J. Cole ◽

Charles T. Driscoll

Keyword(s):

Organic Carbon ◽

Dissolved Organic Carbon ◽

Automated Analysis ◽

Combustion Products ◽

Technical Grade ◽

Digestion Procedure ◽

Wet Digestion ◽

Simplified Method ◽

Continuous Stream

A simplified method for the determination of dissolved organic carbon is based upon the ampoule–persulfate wet digestion procedure. The modification proposed involves use of a continuous stream of sparging gas (technical grade oxygen) during the ampoule sealing process to minimize entry of combustion products from the sealing flame. The method provides reliable results with a minimum of training and equipment compared with other methods of sealing ampoules. Further, the proposed method is inexpensive, relatively simple, and compares favorably with costly, automated analysis of dissolved organic carbon.

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