“…Reagents and Metals Ar cut-off stream, outer and intermediate gas were 10,15 Concentrated hydrochloric acid (20%) and nitric acid (68%) and 1.0 dm3 min−1, respectively. A Hamamatsu Photonics were of TAMAPURE-AA-100 grade (Tama Chemicals, Tokyo, (Hamamatsu, Japan) Model R955 photomultiplier was used Japan).…”