Quantitative ion probe measurement using matrix ion species ratios

Abstract

A new method of empirical calibration has been developed using matrix Ion species ratios to calibrate elemental sensitivity factors from external standards. A series of sensitivity factors Is generated as a function of sample chamber oxygen pressure using an oxygen leak system. The method Is applied to the analysis of three different metal matrices: steels, aluminum alloys, and copper alloys. The accuracy achieved with the method Is on the order of 10% relative error.

Sources of error in quantitative depth profiling of shallow doping distributions by secondary-ion-mass spectrometry in combination with oxygen flooding

“…[30][31][32][33] Good success in this respect has been reported using the Si ϩ /Si 2 ϩ intensity ratio. [30][31][32][33] Good success in this respect has been reported using the Si ϩ /Si 2 ϩ intensity ratio.…”

Electrochemical Characterization of Pyrocatechol Sulfonephthalein-Modified Glassy Carbon Electrode and Separation of Electrocatalytic Responses for Ascorbic Acid and Dopamine Oxidation

“…This is mainly because of their electrochemical stability and relatively high resistance against electrode fouling in physiological environments. Various methods, including covalent binding (17), spontaneous adsorption (12,18), radiofrequency oxygen plasma treatment (19), plasma polymerized vinylpyridine films (20), vacuum heat treatment (21), and electrochemical treatment (22)(23)(24), have been used to improve the electrochemical behavior of H 2 A. Except for the graphite fiber electrode reported by Gonon and co-workers (22,23), these procedures resulted in either unstable electrode surface conditions for electrochemical monitoring H 2 A or insufficient voltammetric separation between H 2 A and dopamine.…”

Acquisition and quantification of ion images with a camera-based detection system and classical quantification algorithms

“…Despite this promising evolution, the progress here is hampered by the quantification problems. Commonly used methods, such as the local thermodynamic equilibrium (LTE) model, the sensitivity factor (SF) method [16][17][18], the matrix ion species ratio (MISR) method [19,20], and ion implantation [21] have all been applied with varying degrees of success to convert the ion images from intensity space to concentration space [2,3,9,[22][23][24][25][26][27].…”