File Name : fig. s1.tif

Caption :  axial intensity profiles of certain elements with different matrices: 2% (<i>v/v</i>) hno<sub>3</sub>, and 2% (<i>v/v</i>) hno<sub>3</sub> with 5% (<i>v/v</i>) ipa matrix. multi-element sample solutions containing 10 μg l<sup>−1</sup> of analytes (<i>i.e.,</i> mg, mn, fe, co, ni, cu, sr, ba, and pb) single-element sample solutions containing 10 μg l<sup>−1</sup> of mo, and 10 μg l<sup>−1</sup> of w with different matrices were analysed using icp-ms under the following operating conditions; rf power, 1,500 w; carrier gas flow rate, 0.8 l min<sup>−1</sup>; make-up gas flow rate, 0.4 l min<sup>−1</sup>; radial sampling position, 0.2 mm.