Stable Isotope Ratio and Elemental Profile Combined with Support Vector Machine for Provenance Discrimination of Oolong Tea (Wuyi-Rock Tea)

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Setting value</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Forward power</td><td class="align_center">1200 W</td></tr><tr><td class="align_left">Scanning times</td><td class="align_center">100 times</td></tr><tr><td class="align_left">Scanning mode</td><td class="align_center">Peak height</td></tr><tr><td class="align_left">Dwell time</td><td class="align_center">10 ms</td></tr><tr><td class="align_left">Acquisition time</td><td class="align_center">20 s</td></tr><tr><td class="align_left">Sample uptake rate</td><td class="align_center">1 mL/min</td></tr><tr><td class="align_left">Coolant gas flow rate</td><td class="align_center">14 L/min</td></tr><tr><td class="align_left">Auxiliary gas flow rate</td><td class="align_center">0.75 L/min</td></tr><tr><td class="align_left">Nebulizer gas flow rate</td><td class="align_center">0.92 L/min</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Optimized instrumental conditions and parameters of the ICP-MS.

Journal of Analytical Methods in Chemistry

tab2

Table 2

Table 2: Stable Isotope Ratio and Elemental Profile Combined with Support Vector Machine for Provenance Discrimination of Oolong Tea (Wuyi-Rock Tea) 