Studies of a radio frequency inductively coupled argon plasma for optical emission spectrometry—III. Interference effects under compromise conditions for simultaneous multi-element analysis☆

摘要: Abstract This work concerns interference effects in a 0.7-kW, 50-MHz inductively coupled plasma (ICP) provided with an ultrasonic nebulizer (USN) and desolvation apparatus (DA). The observations were made under conditions adopted previously as “compromise for simultaneous multi-element analysis.” Various matrices analytes considered. An arrangement of two identical USN's separate DA's was used to distinguish between interferences due processes the (“plasma effects”) nebulizer—desolvation (“nebulizer—desolvation effects”). latter identified “desolvation effects” attributed variation loss analyte DA. effect, whose magnitude varies ±10%, is related difference volatility matrix analyte. experiments revealed that cannot be reconciled common pictures ionization are not incomplete volatilization or dissociation either. Possible explanations overall level ICP studied discussed practical conclusions regarding use desolvation, “pure” aqueous solutions standards, spectroscopic buffers drawn.