Environmental Tracers
نویسندگان
چکیده
منابع مشابه
Tracers for assessing exposure to environmental tobacco smoke: what are they tracing?
The effectiveness of various tracers for measurements of exposure to environmental tobacco smoke (ETS) as a complex chemical mixture is based on the physicochemical properties of four major organic components and their dynamic behavior in indoor environments. For the particulate matter (PM) component and the very volatile organic compounds, emission and ventilation rates are generally the most ...
متن کاملProduction of Plutonium, Yttrium and Strontium Tracers for Using in Environmental Research
Summary of cyclotron production methods of Pu (45,2 d), Y (106,65 d) and Sr (64,84 d) tracers via nuclear reactions with protons and alphas on U, Sr and Rb targets in wide energy range is given. Chemical methods of separation and purification of the tracers from the irradiated uranium, strontium and rubidium targets are described. The tracers were used for determination of Pu (239 – 240), Sr-90...
متن کاملBoron and strontium isotopic characterization of coal combustion residuals: validation of new environmental tracers.
In the U.S., coal fired power plants produce over 136 million tons of coal combustion residuals (CCRs) annually. CCRs are enriched in toxic elements, and their leachates can have significant impacts on water quality. Here we report the boron and strontium isotopic ratios of leaching experiments on CCRs from a variety of coal sources (Appalachian, Illinois, and Powder River Basins). CCR leachate...
متن کاملRiver infiltration to a subtropical alluvial aquifer inferred using multiple environmental tracers
Chloride (Cl), stable isotope ratios of water (dO and dH), sulfur hexafluoride (SF6), tritium (H), carbon-14 (C), noble gases (He, Ne, and Ar), and hydrometry were used to characterize groundwater-surface water interactions, in particular infiltration rates, for the Lower Namoi River (New South Wales, Australia). The study period (four sampling campaigns between November 2009 and November 2011)...
متن کاملIntegrated assessment on groundwater nitrate by unsaturated zone probing and aquifer sampling with environmental tracers.
By employing chemical and isotopic tracers ((15)N and (18)O in NO(3)(-)), we investigated the main processes controlling nitrate distribution in the unsaturated zone and aquifer. Soil water was extracted from two soil cores drilled in a typical agricultural cropping area of the North China Plain (NCP), where groundwater was also sampled. The results indicate that evaporation and denitrification...
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ژورنال
عنوان ژورنال: Water
سال: 2014
ISSN: 2073-4441
DOI: 10.3390/w6113264