| 摘要 |
Plasma-assisted reaction chemical ionization (PARCI) provides highly sensitive elemental analysis by producing positively and negatively charged ions. The PARCI apparatuses, kits, and methods described in this application relate to systems that comprise a chemical reaction interface (CRI) containing reactant gas plasma and an ionization chamber that is downstream from the CRI. The ionization chamber facilitates formation of ions from element-specific products of the CRI by an electron source or an ionization gas. In particular, PARCI provides a method for conducting highly sensitive mass spectrometric elemental analysis of analyte compounds with high ionization potential elements; for example, fluorine, chlorine, and bromine. |
