Online Solid-Phase Extraction LC-MS/MS: A Rapid and Valid Method for the Determination of Perfluorinated Compounds at Sub ng·L<sup>−1</sup> Level in Natural Water

<table class="table-group" id="tab3"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Source</td><td class="align_center">Unit</td><td class="align_center">Value</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Curtain gas (CUR)</td><td class="align_center">psi</td><td class="align_center">25</td></tr><tr><td class="align_left">Collision gas</td><td class="align_center">—</td><td class="align_center">High</td></tr><tr><td class="align_left">Ion spray voltage (IS)</td><td class="align_center">V</td><td class="align_center">−4500</td></tr><tr><td class="align_left">Temperature TEM</td><td class="align_center">°C</td><td class="align_center">450</td></tr><tr><td class="align_left">Ion source gas (GS1)</td><td class="align_center">psi</td><td class="align_center">45</td></tr><tr><td class="align_left">Ion source gas (GS2)</td><td class="align_center">psi</td><td class="align_center">55</td></tr><tr><td class="align_left">Entrance potential (EP)</td><td class="align_center">V</td><td class="align_center">−10</td></tr><tr><td class="align_left">Collision exit potential (CXP)</td><td class="align_center">V</td><td class="align_center">−15</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Journal of Chemistry

tab3

Table 3

Table 3: Online Solid-Phase Extraction LC-MS/MS: A Rapid and Valid Method for the Determination of Perfluorinated Compounds at Sub ng·L<sup>−1</sup> Level in Natural Water 

Table 3 | Online Solid-Phase Extraction LC-MS/MS: A Rapid and Valid Method for the Determination of Perfluorinated Compounds at Sub ng·L−1 Level in Natural Water 