Fundamental aspects of ICP-AES. Sample introduction. Pneumatic, cross-flow, low-consumption, high-salt and desolvating nebulizers. Sample preparation. Acid decomposition, fusions, sinters, open dish, hot blocks, pressurized containers, microwave dissolution, new instrumental developments. Advantages and disadvantages; e.g. recoveries of refractory and volatile components. Partial digestions and extraction for determining mode of occurrence of elements and species for environmental evaluations. Compliant methods of sample preparation and analysis for analysis of waters, wastewaters, and wastes (EPA 200.7, 200.8, SW-846 6010B and 6020A), TCLP 1311 Instrumentation Overview Criteria for instrument selection - wavelength range, LODs, resolution, VUV region for determination of halogens vs. radial ICPs Comparison using conventional figures of merit (limits of detection, response linearity, and matrix effects). Nonspectroscopic and spectroscopic interferences Spectroscopic – spectral overlap, resolution, background corrections, interference equivalent coefficients Nonspectroscopic - Physical effects in aerosol generation and transport systems. EIEs (Na, Ca), salt and acid effects, importance of spectral line energy -. Ion vs. atom lines, memory effects. Effect of ICP operating conditions (RF power, nebulizer flow rate, and torch configuration). Mg II 285/Mg I 280 ratios as matrix effect criteria and instrument set up. Methanol methane effect on high ionization potential elements – Setup, calibration, internal standards, calibration and interference checks, Conclusions and discussions
Fundamental aspects of ICP-AES. Sample introduction. Pneumatic, cross-flow, low-consumption, high-salt and desolvating nebulizers. Sample preparation. Acid decomposition, fusions, sinters, open dish, hot blocks, pressurized containers, microwave dissolution, new instrumental developments. Advantages and disadvantages; e.g. recoveries of refractory and volatile components. Partial digestions and extraction for determining mode of occurrence of elements and species for environmental evaluations. Compliant methods of sample preparation and analysis for analysis of waters, wastewaters, and wastes (EPA 200.7, 200.8, SW-846 6010B and 6020A), TCLP 1311 Instrumentation Overview Criteria for instrument selection - wavelength range, LODs, resolution, VUV region for determination of halogens vs. radial ICPs Comparison using conventional figures of merit (limits of detection, response linearity, and matrix effects). Nonspectroscopic and spectroscopic interferences Spectroscopic – spectral overlap, resolution, background corrections, interference equivalent coefficients Nonspectroscopic - Physical effects in aerosol generation and transport systems. EIEs (Na, Ca), salt and acid effects, importance of spectral line energy -. Ion vs. atom lines, memory effects. Effect of ICP operating conditions (RF power, nebulizer flow rate, and torch configuration). Mg II 285/Mg I 280 ratios as matrix effect criteria and instrument set up. Methanol – methane effect on high ionization potential elements Setup, calibration, internal standards, calibration and interference checks, Conclusions and discussions
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