Determining isotope ratios using laser ablation sampling in air with MC-ICPMS

Chemical Imaging

“…Only recently, ablation even in air has been successfully performed, which is of special relevance to samples that are too large to be introduced into the laser chamber or too valuable to cut. 118 After ablation, the air was exchanged to Ar in a gas-exchange device to transport the aerosol to the plasma.…”

Proceedings of the International Conference LACONA XI

“…Transient signals were recorded and evaluated for elemental quantification. Ga, 85 Rb, 88 Sr, 89 Y, 90 Zr, 93 Nb, 118 Sn, 121 Sb, 137 Ba, 139 La, 140 Ce, 141 Pr, 142 Nd, 152 Sm, 153 Eu, 158 Gd, 159 Tb, 164 Dy, 165 Ho, 166 Er, 169 Tm, 174 Yb, 175 Lu, 178 Hf, NIST SRM 610 [17] and Corning D archeological glass [18] were used as the external standard for modern and medieval objects respectively. The results of elemental composition, for all samples, were recalculated to the content of the oxides using SiO 2 as the internal standard.…”

Research Progress on Gas to Particle Conversion-Gas Exchange ICP-MS for Direct Analysis of Ultra-trace Metallic Compound Gas

“…In order to overcome this limitation, a gas exchange device (GED) has been proposed and its capabilities have been successfully demonstrated on a variety of applications. [3][4][5][6][7][8][9][10][11][12][13][14] For example, the direct real-time multi-element analysis of airbone particulate matter (APM) has been examined and demonstrated. [3][4][5][6][7][8]10,14 The GED has also been coupled to LA-ICP-MS for the direct atmospheric sampling of laser-generated aerosols for the determination of trace elements as well as the isotope ratio analysis, in particular for larger samples that cannot be placed in a commonly required ablation chamber.…”

“…[3][4][5][6][7][8]10,14 The GED has also been coupled to LA-ICP-MS for the direct atmospheric sampling of laser-generated aerosols for the determination of trace elements as well as the isotope ratio analysis, in particular for larger samples that cannot be placed in a commonly required ablation chamber. 9,11,12 Because the GED consists of a porous silica membrane tube, it can not only be used for the exchange of ambient air but also for other gases. For example, the direct multi-element analysis of tobacco smoke, as one of the combustion gases, has also been demonstrated by an ICP-time of flight mass spectrometer (ICP-TOFMS) coupled with GED.…”

“…[15][16][17][18][19] The reaction mechanism of the gas to particle conversion is based on either the oxidation of metallic compound gas by ozone (O3) or the agglomeration of metal oxide with ammonium nitrate (NH4NO3), which is generated by the reaction of O3 and ammonia (NH3) gases in a gas to particle conversion device (GPD). In order to separate the reaction gases (remaining O3 and NH3) as well as non-reacted gases such as nitrogen (N2), oxygen (O2), carbon dioxide (CO2) in ambient air from the converted particles, GED [3][4][5][6][7][8][9][10][11][12][13][14] was used and the particles in Ar, otherwise ICP cannot be maintained, were directly introduced and measured by ICP-MS. Since the technique detects the metallic compound gas directly without any sampling methods, it can be applied to the real-time monitoring.…”