Investigation of matrix effect on dry inductively coupled plasma conditions using laser ablation sampling
| Title | Investigation of matrix effect on dry inductively coupled plasma conditions using laser ablation sampling |
| Publication Type | Journal Article |
| Year of Publication | 2000 |
| Authors | Chan, Chee Yuen(George), Wing-Tat Chan, Xianglei Mao, and Richard E. Russo |
| Secondary Title | Spectrochimica Acta Part B-Atomic Spectroscopy |
| Volume | 55 |
| Pagination | 221-235 |
| Publication Language | eng |
| Accession Number | 126 |
| Keywords | ablation, aluminium, anion, atomic-emission-spectrometry, ca, caf2, calcium, constant, density, direct solid sampling, dry plasma, e, easily ionizable element, easily ionizable elements, electron, electron number densities, electron number density, element, elements, england, excitation, experimental, icp, icp-aes, icp-ms, inductively coupled plasma, inductively-coupled-plasma, intensities, intensity, ionization, irradiance, k, laser, laser ablation, laser ablation sampling, laser-ablation, lasers, lif, line, line-intensities, lithium, magnesium, mass, matrices, matrix, matrix effect, matrix effects, measurement, measurements, mechanism, metal, mg, mgo, na, nd:yag, nd:yag laser, number, number density, plasma, plasma diagnostics, ratio, results, sample, sampling, science, sodium, sr, strontium, temperature, time, usa, zn |
| Abstract | The sample matrix can influence the temperature, electron number density, and other excitation characteristics in the inductively coupled plasma (ICP). These ICP characteristics were investigated by measurements of the ionic to atomic spectral line intensity ratio of a test element (e.g. Mg and Zn). The effect of matrices of calcium (CaCO3 and CaF2), strontium (SrCO3), lithium (Li2O, Li2CO3 and LiF), magnesium (pure Mg and MgO), and aluminium metal on plasma conditions was studied using laser ablation sampling. Two Nd:YAG lasers were used to ablate the test element and the matrix simultaneously. Different amounts of matrix were ablated by varying one laser irradiance; the laser irradiance fur the ablation of the test element was kept constant. Strontium, calcium, and magnesium had a more pronounced matrix effect than the easily ionizable elements (Li, Na and K). The matrix effect was independent of the anion. Experimental results suggest that the matrix effects may be due to a mechanism that involves the second ionization level of the elements (Sr, Ca and Mg). Published by Elsevier Science B.V |
| Notes | LBNL-44859 NOT IN FILE |
| LBNL Report Number | LBNL-44859 |
| Citation Key | 14227 |
