Determination of trace constituents in thoria by laser induced breakdown spectrometry

Determination of impurities in thoria (ThO2) using Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS)

“…Table 3 presents the published results of analysis of these standards by different methods viz. LIBS [11] and TXRF [12]. It can be seen that due to the complexity of the emission spectra as well as matrix effects, only the data on a few of the elements were obtained directly, i.e.…”

Fluorimetric estimation of U(VI) in the presence of a large excess of Th(IV)

“…In addition, a solution containing a number of ions, as shown in Table 1, was prepared. These ions are usually present as impurities in thoria [16]. All these ions altogether are referred to as 'other ions' in the text.…”

“…Four synthetic solutions containing different concentrations of uranium and thorium are prepared and are treated as unknown samples. Three of these solutions contain 'other ions' which constitutes major impurities found in ThO 2 used as a fuel for AHWR reactor [16]. Table 1 gives the data on the different impurities present in 'other ions'.…”

Standoff Detection of Explosives at 1 m using Laser Induced Breakdown Spectroscopy

“…Any application(s), particularly those where the proximity to the sample is limited or restricted because of its hazardous nature, this technique can be one of the important tools in tool-box of analytical techniques. A variety of applications of this technique have been reported in diverse fields of pharmaceuticals 5 , nuclear 6 , biological 7 , explosives 8 , radiological 9 , archeological 10 , and planetary exploration 11 . In recent years, on account of increased threat to the homeland security, the efforts for detection of explosives and its related compounds has seen major thrust in the global community as well as India.…”