title: Practical and highly sensitive elemental analysis for aqueous samples containing metal impurities employing electrodeposition on indium-tin oxide film samples and laser-induced shock wave plasma in low-pressure helium gas.
abstract: We have conducted an experimental study exploring the possible application of laser-induced breakdown spectroscopy (LIBS) for practical and highly sensitive detection of metal impurities in water. The spectrochemical measurements were carried out by means of a 355 nm Nd-YAG laser within N2and He gas at atmospheric pressures as high as 2 kPa. The aqueous samples were prepared as thin films deposited on indium-tin oxide (ITO) glass by an electrolysis process. The resulting emission spectra suggest that concentrations at parts per billion levels may be achieved for a variety of metal impurities, and it is hence potentially feasible for rapid inspection of water quality in the semiconductor and pharmaceutical industries, as well as for cooling water inspection for possible leakage of radioactivity in nuclear power plants. In view of its relative simplicity, this LIBS equipment offers a practical and less costly alternative to the standard use of inductively coupled plasma-mass spectrometry (ICP-MS) for water samples, and its further potential for in situ and mobile applications.
authors.forename: Koo Hendrik
authors.initials: KH
authors.lastname: Kurniawan
authors.forename: Marincan
authors.initials: M
authors.lastname: Pardede
authors.forename: Rinda
authors.initials: R
authors.lastname: Hedwig
authors.forename: Syahrun Nur
authors.initials: SN
authors.lastname: Abdulmadjid
authors.forename: Kurnia
authors.initials: K
authors.lastname: Lahna
authors.forename: Nasrullah
authors.initials: N
authors.lastname: Idris
authors.forename: Eric
authors.initials: E
authors.lastname: Jobiliong
authors.forename: Hery
authors.initials: H
authors.lastname: Suyanto
authors.forename: Maria Margaretha
authors.initials: MM
authors.lastname: Suliyanti
authors.forename: May On
authors.initials: MO
authors.lastname: Tjia
authors.forename: Tjung Jie
authors.initials: TJ
authors.lastname: Lie
authors.forename: Zener Sukra
authors.initials: ZS
authors.lastname: Lie
authors.forename: Davy Putra
authors.initials: DP
authors.lastname: Kurniawan
authors.forename: Kiichiro
authors.initials: K
authors.lastname: Kagawa