2017/05/04 by Ali Khumaeni, Masahiko Tani, Kazuyoshi Kurihara +2
Chemistry · Engineering · Environmental Science · #Analytical chemistry methods development #Laser-induced spectroscopy and plasma #Mercury impact and mitigation studies
paper · doi:10.1080/00032719.2016.1254222
crossref issued 2017/05/04 · crossref published 2017/05/04 · crossref published-online 2017/05/04 · openalex publication_date 2017/05/04 · crossref created 2017/05/04 · crossref published-print 2017/08/13 · crossref deposited 2017/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29 · crossref indexed 2026/07/29
A novel method of laser-induced plasma spectroscopy utilizing a pulsed transversely excited atmospheric CO2 laser has been developed for the high-sensitivity determination of heavy metals in soil. A coarse metal powder was used to trap the soil and to assist with plasma generation. When the CO2 laser (10.6 µm, 1.5 J, 200 ns) was irradiated on the metal and soil powder, a high-temperature and long-lifetime luminous plasma was induced. Fine particles of soil were dissociated and were excited in the plasma region. The method was used for the rapid determination of Cr, Pb, and Hg in loam. The limits of detection for Cr, Pb, and Hg were approximately 0.8, 15, and 0.7 mg/kg, respectively.