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Light Scattering Study on Sol-Gel Transformation of SiO2 Colloid at Extremely High Concentrations
Light Scattering Study SiO2 Colloids Sol-gel Transformation
2011/12/8
Abstract: Ludox SiO2 sols with a reasonably uniform size of 12 nm and in the high concentration of 10 to 40 wt% were transformed to gels by lowering the pH. The process from sol to gel, followed by li...
Factors controlling sulfur concentrations in volcanic apatite
Factors controlling sulfur concentrations volcanic apatite
2012/4/6
Apatitecrystalsfromtwotypesofsampleswereanalyzedbyelectronmicroprobefor15majorandtraceelements:(1)apatiteinHO-andS-saturatedexperimentalchargesof
the1982ElChicho!ntrachyandesiteand(2)apatiteinvolcani...
Extraction of Interlayer K from Phlogopite Specific Effects of Cations Role of Na and H Concentrations in Extraction Solutions
Extraction Interlayer K Phlogopite Specific Effects Cations Role Na H Concentrations Extraction Solutions
2012/2/20
The accurate optical observation of alteration fringes developing in phlogopite flakes, shows that the morphology of the fringes is specific for some cations, such as Na, Mg and Ca, replacing K.A care...