The transport of strontium cation through a hollow fiber supported dichlorobenzene membrane using 18-C-6 crown ether, nitrate and anion of dinonylnaphtalen sulfonic acid has been studied. A permeation device-single hollow fiber module with on-line radiometric detection of strontium using 85 Sr ...
Strontium and oxygen isotopes of individuals from El Hundido and Valdescusa (north of Spain) sites, corresponding to the Bell Beaker culture, were analysed in order to determine mobility patterns and provenance areas. Strontium and oxygen isotope ratios
The Separation of strontium by strongly basic anion exchangers IRA-410 and IRA-900 from simulated waste containing, Sr 2+ , Eu 3+ , Ce 3+ , Pd 2+ , Rh 3+ , Ru 3+ , VO 2 2+ , Fe 3+ , Cr 3+ , Ni 2+ , Al 3+ , Ca 2+ , and Cs + , in K 2 SO 4 /nitrate ...
For example, apatite has the ability to load high levels (20–30 wt %) of U in the presence of high background nitrate anion concentrations32. The concentrations of Sr2+ and Co2+ used in this study are higher than those at most radioactive contaminated sites and are more comparable with ...
It has been shown that potassium, caesium, calcium, barium, yttrium and strontium can be adsorbed on strong base anion exchangers of the Dowex and Amberlite type, which contain the quaternary ammonium group with nitrate as counter-ion, from solutions of nitric acid in alcohol. Adsorption strength...
Strontium, yttrium and other cations bind to the cation exchanger and are eluted from the column by means of nitric acid. Separation of yttrium and strontium from other cations is carried out on columns filled with strong base anion exchangers in nitrate form with alcoholic solutions of nitric ...
Radiostrontium is purified by the nitrate method and counted in a low level beta proportional counter. Fe is purified by extraction and cation exchange and 55 Fe is counted by X-ray spectrometry with a Si(Li) detector. The sample preparation and the application of the procedure to large ...
The starting point is the definition of the lattice parameter, a, of an ideal fluorite structure in terms of cation and anion ionic radii, rcation and ranion, respectively, 𝒂=43−−√(𝒓𝒄𝒂𝒕𝒊𝒐𝒏+𝒓𝒂𝒏𝒊𝒐𝒏)a=43(rcation+ranion) (1) The specific ...
The dominant cation and anion were Ca2+ and HCO3−, respectively. On the other hand, HCO3- Ca·Mg·Na was the main facies type of Sr-rich groundwater in the Tianjiazhai area. The coefficients of variation of the hydrochemical parameters of Sr-rich groundwater were less than 1, ...
The dominant cation and anion were Ca2+ and HCO3−, respectively. On the other hand, HCO3-Ca·Mg·Na was the main facies type of Sr-rich groundwater in the Tianjiazhai area. The coefficients of variation of the hydrochemical parameters of Sr-rich groundwater were less than 1, indicating...