title: Spectrochemical analysis of powder using 355 nm Nd-YAG laser-induced low-pressure plasma.
abstract: The applicability of spectrochemical analysis of minute amounts of powder samples was investigated using an ultraviolet Nd-YAG laser (355 nm) and low-pressure ambient air. A large variety of chemical powder samples of different composition were employed in the experiment. These included a mixture of copper(II) sulfate pentahydrate, zinc sulfide, and chromium(III) sulfate n-hydrate powders, baby powder, cosmetic powders, gold films, zinc supplement tablet, and muds and soils from different areas. The powder samples were prepared by pulverizing the original samples to an average size of around 30 microm in order to trap them in the tiny micro holes created on the surface of the quartz subtarget. It was demonstrated that in all cases studied, good quality spectra were obtained with low background, free from undesirable contamination by the subtarget elements and featuring ppm sensitivity. A further measurement revealed a linear calibration curve with zero intercept. These results clearly show the potential application of this technique for practical qualitative and quantitative spectrochemical analysis of powder samples in various fields of study and investigation.
authors.affiliation: Research Center of Maju Makmur Mandiri Foundation, 40 Srengseng Raya, Kembangan, Jakarta Barat, 11630, Indonesia.
authors.forename: Zener S
authors.initials: ZS
authors.lastname: Lie
authors.forename: M
authors.initials: M
authors.lastname: Pardede
authors.forename: R
authors.initials: R
authors.lastname: Hedwig
authors.forename: M M
authors.initials: MM
authors.lastname: Suliyanti
authors.forename: Koo Hendrik
authors.initials: KH
authors.lastname: Kurniawan
authors.lastname: Munadi
authors.forename: Yong-Inn
authors.initials: YI
authors.lastname: Lee
authors.forename: Kiichiro
authors.initials: K
authors.lastname: Kagawa
authors.forename: Isamu
authors.initials: I
authors.lastname: Hattori
authors.forename: May On
authors.initials: MO
authors.lastname: Tjia
mesh_terms: D000388:Air; D006046:Gold / Q000032:analysis; D053844:Lasers, Solid-State; D009942:Organometallic Compounds / Q000032:analysis; D010316:Particle Size; D011208:Powders / Q000032:analysis*; D011312:Pressure; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012987:Soil / Q000032:analysis; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods*; D013440:Sulfides / Q000032:analysis; D017967:Zinc Compounds / Q000032:analysis
chemical_list: D009942:Organometallic Compounds; D011208:Powders; D012987:Soil; D013440:Sulfides; D017967:Zinc Compounds; D006046:Gold; C031238:zinc sulfide