Digestion efficiency study of an intraplasmic reactor for in-situ, halogen assisted direct solid sample digestion by Inductively Coupled Plasma Atomic Emission Spectroscopy

Electrothermal vaporization for sample introduction in atomic absorption, atomic emission and plasma mass spectrometry—a critical review with focus on solid sampling and slurry analysis

“…127 Ho and Jiang describe the use of slurry sampling -ETV-ICP-MS for the determination of Cr, Zn, Cd and Pb in milk powder samples. 125 Whereas under standard conditions, the signals at mass-to-charge ratios of 52 and 68 suffer from spectral overlap attributed to the occurrence of ArC + and ArCO + ions, respectively, the use of NH 3 in the DRC provides interference-free conditions, enabling Cr and Zn determination via the signals from 52 Cr and 68 Zn, respectively. Due to the differences in ionization energies, NH 3 molecules readily transfer electrons to Ar-based ions, thus eliminating their detrimental effect, while the Cr + and Zn + ions show no reactivity towards NH 3 .…”

Development and Characterization of an Automated Direct Sample Insertion/Inductively Coupled Plasma/Atomic Emission Spectrometry System

“…Chemical modi® cation has been reported 5,9,17,21 to improve volatilization of carbide-forming elements. This improvement is m ost likely due to preferential form ation of the corresponding high-volatility halide (, 1400 8 C for Ti, V, and W 36 ) rather than the low-volatility carbide (for example, 3900, 4280, and 6000 8 C for VC, TiC, and W C/ W 2 C 36 ) as a result of addition of an excess of a halidecontaining reagent either to the sample or to the plasma gases.…”