Methodology of Environmental Standardization for Natural Waters

Doklady Earth Sciences - This paper discusses sources of significant errors that occur in the course of determination of the primary environmental standard for natural waters: the maximum...     

New Data on the Chronostratigraphy of the Upper Pleistocene Loess–Soil Series in Southwestern Siberia

Doklady Earth Sciences - We have analyzed the modern status of the chronostratigraphic differentiation of the loess–paleosoil series in southwestern Siberia and the results of luminescence...     

Nonlinear Effects in the Formation of Water Quality

Doklady Earth Sciences - The indicators of the composition and quality of natural water are random variables. Since the “linear” approach to their assessment and forecast provides no...     

Redox State of Tektites from Different Scattering Fields: Evidence from the Data of Electrochemical Study of Intrinsic Oxygen Fugacity

Doklady Earth Sciences - The results of study of the intrinsic oxygen fugacity (fO2) of various types of tektites from the European and Australasian scattering fields (moldavites, indochinites,...     

Dynamics of Dissolved Carbon in the Mainstem of the Lena River in July 2017

Doklady Earth Sciences - The dynamics of dissolved carbon forms in the waters of the mainstem of the Lena River from the middle reaches (the city of Yakutsk) to the nearshore zone of the Laptev Sea...     

Coexisting Tetrahedrite–(Zn) and Sphalerite at the Teremki Gold-Ore Deposit (East Transbaikalia): Chemical Composition and Formation Conditions

Geology of Ore Deposits - Paragenetic associations of tetrahedrite-(Zn) and sphalerite are distinguished in the Teremki gold-ore deposit. The chemical composition of coexisting minerals of this...     

Predicting the impact of management and climate scenarios on groundwater nitrate concentration trends in southern Portugal

Hydrogeology Journal - The dynamics related to evolution of nitrate-contaminated groundwater are analyzed with focus on the impact of intrinsic aquifer properties, agricultural activities and...     

Causes and consequences of long-term groundwater overabstraction in Jordan

Hydrogeology Journal - In 2017, a comprehensive review of groundwater resources in Jordan was carried out for the first time since 1995. The change in groundwater levels between 1995 and 2017 was...     

Pyrrhotite–Nisbite–Breithauptite–Sulfoantimonide Micromineral Assemblage: a Product of High-Temperature Recrystallization of Ores at the Yuzhnoe Vein-Type Tin–Silver–Polymetallic Deposit,Sikhote-Alin,Russia

Geology of Ore Deposits - Abstract—The paper presents the results of mineralogical studies of tin–silver–polymetallic ores localized at the deep level (500–700 m below the...     

Metal-enriched nanoparticles and black carbon: A perspective from the Brazil railway system air pollution

Having a better understanding of air pollutants in railway systems is crucial to ensure a clean public transport. This study measured, for the first time in Brazil, nanoparticles (NPs) and black carbon (BC) on two ground-level platforms and inside trains of the Metropolitan Area of Porto Alegre (MAPA). An intense sampling campaign during thirteen consecutive months was carried out and the chemical composition of NPs was examined by advanced microscopy techniques. The results showed that highest concentrations of the pollutants occur in colder seasons and influenced by variables such as frequency of the trains and passenger densities. Also, internal and external sources of pollution at the stations were identified. The predominance of NPs enriched with metals that increase oxidative stress like Cd, Fe, Pb, Cr, Zn, Ni, V, Hg, Sn, and Ba both on the platforms and inside trains, including Fe-minerals as hematite and magnetite, represents a critical risk to the health of passengers and employees of the system. This interdisciplinary and multi-analytical study aims to provide an improved understanding of reported adverse health effects induced by railway system aerosols.