Improvements in methods and apparatus relating to inductively coupled plasma atomic absorption spectroscopy by Tariq M. Durrani

“…Further, improvements in the detection limits for molybdenum and tungsten have been achieved with the development of an on-line preconcentration procedure using a miniature column of Amberlite (IRA-93) anion-exchange resin. A heated spray chamber desolvation system has been evaluated as a sample introduction device for atomiser and source plasmas but, unfortunately the results obtained with the device were unsatisfactory. …”
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