Research Article
Determination of Halogens by Ion Chromatography in Edible Mushrooms after Microwave-Induced Combustion for Sample Preparation
Table 1
Operational conditions for halogen determination by IC and by ICP-MS.
| Parameter | Condition |
| IC | Stationary phase | Poly(vinyl alcohol) with quaternary ammonium groups | Mobile phase (mmol L−1) | Na2CO3 (3.2)/NaHCO3 (1.0) | Suppression solution (mol L−1) | H2SO4 (0.2) | Flow rate (mL min−1) | 0.7 | Sample loop (µL) | 20 | Column | Metrosep A Supp 5 (150 mm x 4 mm i.d.) | Guard column | Metrosep A Supp 4/5 Guard (5 mm × 4 mm i.d.) | Detection | Conductivity |
| ICP-MS | Radiofrequency potency (W) | 1300 | Plasma argon flux (L min−1) | 18 | Auxiliary argon flux (L min−1) | 1.20 | Nebulizer argon flux (L min−1) | 0.95 | Sample uptake rate (mL min−1) | 0.7 | Spray chamber | Cyclonic | Nebulizer | Concentric | Sampler and skimmer cones | Pt | Ion lens | Auto lens “On” | Isotopes (m/z) | 79Br, 127I |
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