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A NEW MULTI-SPECTRAL THRESHOLD NORMALIZED DIFFERENCE WATER INDEX (MST-NDWI) WATER EXTRACTION METHOD – A CASE STUDY IN YANHE WATERSHED
Water Extraction MST-NDWI Small Linear River Remote Sensing Yanhe Watershed
2018/5/17
Accurate remote sensing water extraction is one of the primary tasks of watershed ecological environment study. Since the Yanhe water system has typical characteristics of a small water volume and nar...
Determination of Arsenic in Water by Potentially Portable Methodology
Arsenic Field Analysis Portable Instrument Water
2014/11/20
Arsenic contamination in groundwater is a worldwide problem. The existing portable field test kits can not provide accurate results when the arsenic concentration is around 10 μg L-1 or lower. This re...
What Can Density Functional Theory Tell Us about Artificial Catalytic Water Splitting?
Density Functional Theory Artificial Catalytic Water Splitting
2014/8/21
Water splitting by artificial catalysts is a critical process in the production of hydrogen gas as an alternative fuel. In this paper, we examine the essential role of theoretical calculations, with p...
Water Saturation Dependence on CO2 Sorption Potential of Sandstones
CO2 Water Saturation Sorption Potential Sandstones
2013/3/8
For the assessment of the carbon dioxide (CO2) storage potential of water-filled reservoir rocks (i.e., saline aquifers), it should be first important step for a thorough understanding of the effect o...
Dissolved ion analyses of stream water from bamboo forests: Implication for enhancement of chemical weathering by bamboo
weathering rate plagioclase dissolved ions bamboo stream water
2017/4/11
Dissolved ion analyses of stream water were conducted monthly in three catchments of varying bamboo coverage of
similar geological setting for one year. We found that the concentration of dissolved S...
Assessment of density functional approximations for the hemibonded structure of water dimer radical cation
Assessment of density functional approximations hemibonded structure water dimer radical cation Chemical Physics
2012/4/20
Due to the severe self-interaction errors associated with some density functional approximations, conventional density functionals often fail to dissociate the hemibonded structure of water dimer radi...
Role of quantum nuclei and local fields in the x-ray absorption spectra of water and ice
Role of quantum nuclei local fields the x-ray absorption spectra of water and ice Chemical Physics
2012/4/19
We calculate the x-ray absorption spectra of liquid water at ambient conditions and of hexagonal ice close to melting, using a static GW approach that includes approximately local field effects. Quant...
Theoretical Study on Impact of Single Water Molecule on OH+O3 Reaction
Ozone OH H2O Atmospheric chemistry Quantum chemical calculation
2012/4/5
Quantum chemical calculations are performed to study the reactions of OH and ozone with-out and with water to estimate whether the single water molecule can decrease the energy barrier of the OH radic...
Assimilable organic carbon generation from algogenic organic matter in drinking water
Dissolved organic compounds bacterial regrowth chlorination algal material
2011/4/6
A study of assimilable organic carbon (AOC) derived from algogenic organic matter in different drinking water resources was conducted. Seasonal changes in the concentration of AOC at Kamafusa Dam were...
Solid phase extraction of copper, nickel, and cobalt in water samples after extraction using surfactant coated alumina modified with indane-1,2,3-trione 1,2-dioxime and determination by flame atomic absorption spectrometry
Solid phase extraction surfactant coated alumina atomic absorption spectrometry
2010/12/3
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
'Solid phase extraction of Copper, Nickel and Cobalt in water samples after extraction using surfactant Coated alumina modified with Indane-1,2,3-trione 1,2-dioxime and determination by flame atomic absorption
Solid phase extraction surfactant coated alumina atomic absorption spectrometry
2010/10/19
A simple method for simultaneous pre-concentration of Cu, Ni, and Co metal ions prior to their determination by flame atomic absorption spectrometry is reported. The method is based on the extraction ...
Development of a Simple and Low-cost Device for Fluorometric Determination of Selenium in Water Samples
Simple Low-cost Device Fluorometric Determination Selenium Water Samples
2010/9/13
A portable spectrofluorometer device comprising an ultraviolet LED (380 nm) as a light source, an LED driver, a microsyringe as a cell, an optical fiber cable, a CCD spectrometer and a personal comput...
Magnitudes and controls of organic and inorganic carbon flux through a chain of hard-water lakes on the northern Great Plains
Magnitudes and controls of organic inorganic carbon flux through hard-water lakes northern Great Plains
2014/4/17
Whole-lake carbon (C) mass-balance budgets were constructed for a chain of six hard-water lakes to quantify the relative importance of organic carbon (OC) and inorganic carbon (IC) exchanges between a...
Evaluation of solid-phase extraction sorbent with ketoimine groups for the preconcentration of benzene and phenolic compounds in water
Modified silica solid-phase extraction SPE
2010/10/18
The applicability of silica gel, modified with ketoimine groups, to solid phase extraction (SPE) was tested. Basic characteristics of the modified silica were determined using elemental analysis, and ...
Application of a Dynamic Reaction Cell (DRC) ICP-MS in Chromium and Iron Determinations in Rock, Soil and Terrestrial Water Samples
Application of a Dynamic Reaction Cell Chromium Iron Determinations Rock
2010/9/15
Despite environmental and geochemical interests, Cr and Fe have been left beyond the reach of determinations by ICP-MS due to severe interferences originating from Ar. The applicability of a dynamic r...