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This work is intended to asses the capability of LIBS for the detection of the tsunami sediment contamination in soil. LIBS apparatus used in this work consist of a laser system and an optical multichannel analyzer (OMA) system. The soil sample was collected from in Banda Aceh City, Aceh, Indonesia, the most affected region by the giant Indian Ocean tsunami 2004. The laser beam was focused onto surface of the soil pellet using a focusing lens to produce luminous plasma. The experiment was conducted under air as surrounding gas at 1 atmosphere. The emission spectral lines from the plasma were detected by the OMA system. It was found that metal including heavy metals can surely be detected, thus implying the potent of LIBS technique as a fast screening tools of tsunami sediment contamination. [ABSTRACT FROM AUTHOR]

This work is intended to asses the capability of LIBS for the detection of the tsunami sediment contamination in soil. LIBS apparatus used in this work consist of a laser system and an optical multichannel analyzer (OMA) system. The soil sample was collected from in Banda Aceh City, Aceh, Indonesia, the most affected region by the giant Indian Ocean tsunami 2004. The laser beam was focused onto surface of the soil pellet using a focusing lens to produce luminous plasma. The experiment was conducted under air as surrounding gas at 1 atmosphere. The emission spectral lines from the plasma were detected by the OMA system. It was found that metal including heavy metals can surely be detected, thus implying the potent of LIBS technique as a fast screening tools of tsunami sediment contamination. [ABSTRACT FROM AUTHOR]

Quality control of cocoa is an important matter to ensure safe consumption of cocoa products. Conventional elemental analysis of cocoa beans uses chromatography that requires extensive sample preparations. This poses a problem for Indonesian cocoa farmers who have limited resources. Laser Induced breakdown Spectroscopy (LIBS) is one of the best techniques for elemental analysis owing to its distinct features such as inherent rapidity and simple sample preparation methods with small quantities of samples. This means that LIBS can be used as an alternative technique for elemental analysis of cocoa beans. We report a study of elemental composition of fermented cocoa beans from Flores Island, Indonesia. [ABSTRACT FROM AUTHOR]