The hydrogeochemical studies revealed that the dominant cation in water is Na + and the dominant anion is HCO 3 resulting in Na-HCO 3 type of groundwater, followed by Ca/Mg-HCO 3 or Na-SO 4 and Na-Cl in a few cases. Speciation modelling revealed that the groundwater is under...
Thermodynamic Study on Adsorption of Fluoride Ions in Water by Iron-active Clinoptilolites 来自 知网 喜欢 0 阅读量: 24 作者:LI Ying,LI Man-Ni,XF Liu 摘要: Iron-active clinoptilotites of 3~# and 4~# samples were prepared by the static and dynamic impregnation with 5% FeCl_3 solution ...
Ramachandran M, Chidambaram S, Ulaganthan K, Paluchamy A, Sivaji M, Hameed S (2012) Mapping of fluoride ions in groundwater of Dindigul district, Tamilnadu, India—using GIS technique. Arab J Geosci 5:433–439Ramachandran M, Sabarathinam C, Ulaganthan K, Paluchamy A, Sivaji M, ...
A rapid, simple and sensitive method for the determination of trace amounts of molybdenum(VI) in sea water has been developed, based on the enrichment of molybdenum(VI) as a yellow Tiron complex by a thin layer of anion-exchange resin fo... MMA Shriadah,M Kataoka,K Ohzeki - 《Analyst...
The content of fluoride ions in water from plumbing in two Belgrade districts at the time of analysis was significantly increased and exceeded values given in Regulation for drinking water quality. The received results from the analysis of fluorides in teas show that fluorides exist in teas in ...
fluoride and pH have a notable relationship. The anionic exchange between F and OH ions (illite, mica, and amphibole) occurs at higher pH, increasingfluoride ionsin groundwater. The release of fluoride from the aquifer matrix into groundwater is favoured by high HCO3, Na, and Ph (Hao et ...
Fluoride is a natural element, different values of which are almost in all drinking waters and soil. Its shortage causes tooth caries and its abundance causes dental Fluorosis. According to the WHO instruction, the minimum and the maximum amount of Fluoride ions for drinking water are 0.50 PPM ...
Fluoride ion selective spectrometry was used to determine the stability constants for zinc fluoride complexes in water at 25 °C, giving values β1[ZnF(aq)]+ = 3.5 ± 0.1 and β2[ZnF2(aq)] = 3.8 ± 0.5.643 These results demonstrate that the complexation of fluoride is very weak and in...
hydrogen fluoride- a colorless poisonous corrosive liquid made by the action of sulphuric acid on calcium fluoride; solutions in water are hydrofluoric acid stannous fluoride- a white powder that is used to fluoridate toothpaste sulfur hexafluoride,sulphur hexafluoride- a colorless gas that is soluble ...
Another interesting tidbit:Bottled water companies are not required to disclose what type of filtration they use, if any. Don’t believe the “Natural Mountain Spring” hype, many of them are simply selling you tap water with fluoride in it. ...