XRF analysis of major elements in silicate rocks (Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe) was carried out using fused glass discs prepared by mixing 0.875 g of powdered rock samples with 6.125 g of lithium tetraborate. The method was calibrated on twenty two international rock standards and twelve additional samples prepared by mixing available standards. The margin of error was calculated to be between 4-7%, 2-4% and about 1% respectively for abundances ranging from 0 to 1%, 1 to 10% and 10 to 65%. Overall, the analytical data obtained via the proposed method are superior to those acquired by processing briquetted rock samples and comparable to those obtained using powdered rock samples dissolved in a lithium borate glass. However, applying the technique calls for great care during sample preparation
X-ray fluorescence analysis of major elements in silicate rocks using fused glass discs
TAMPONI, MARCO;BERTOLI, MARCO;
2003-01-01
Abstract
XRF analysis of major elements in silicate rocks (Na, Mg, Al, Si, P, K, Ca, Ti, Mn, Fe) was carried out using fused glass discs prepared by mixing 0.875 g of powdered rock samples with 6.125 g of lithium tetraborate. The method was calibrated on twenty two international rock standards and twelve additional samples prepared by mixing available standards. The margin of error was calculated to be between 4-7%, 2-4% and about 1% respectively for abundances ranging from 0 to 1%, 1 to 10% and 10 to 65%. Overall, the analytical data obtained via the proposed method are superior to those acquired by processing briquetted rock samples and comparable to those obtained using powdered rock samples dissolved in a lithium borate glass. However, applying the technique calls for great care during sample preparationI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.