Sentence examples for determination of the elements from inspiring English sources
The results were compared with those obtained by an acid digestion procedure and determination of the elements by FAAS.
The simultaneous determination of the elements in all matrices considered was performed, without the use of chemical modifiers at atomization temperatures of 1700 °C for Cd and Tl, and 2100 °C for As, Cu, Cr, Ni and Pb, using a standard calibration curve for calibration purposes.
Electron microprobe WDS analysis was employed for the quantitative determination of the elements from all the above samples, with one exception.
This method has been implemented into the EIRENE code for determination of the elements of B at each time step.
For the determination of these elements the coal samples have been digested with 2.5 mL HNO3 andHClO4 in 10 1 ratio on hot water plate following the method ofEaton et al. (1995).The mixture is then filtered usingWhatmanfilter paper (No. 41) and the digested samples are rinsed with 1 % Conc.
So, using the chemical conditions optimized, this method allows the determination of these elements employing the external calibration technique using aqueous standards with limits of detection and quantification of 0.04 and 0.14 µg L−1 for antimony, 0.04 and 0.14 µg L−1 for arsenic and 0.14 and 0.37 µg L−1 for selenium, respectively.
An inductively coupled plasma mass spectrometric (ICP-MS) method was developed and validated for the determination of these elements in a Protected Designation of Origin product, the Chios mastic gum.
Consequently, the accurate determination of these elements by LA will require pre-ablation of the concretion surface before the actual analysis.
More recently several workers have reported different methods [12 16] for the determination of these elements in glass and allied materials by inductively coupled plasma atomic emission spectroscopy (ICP-AES) and atomic absorption spectroscopy (AAS) [13 16].
The precisions of the float-sink experiments and the determination of the trace elements were evaluated by balancing the trace elements concentration of the raw coal and the weighted mean values in the products of different densities in float-sink experiments and in fines of particle size less than 0.5 mm.
The precision of the float-sink experiment and the determination of the trace elements were evaluated by balancing the trace element content between the raw coal and the weighted mean values in the products of different densities in the float-sink experiments and in the fines of particle size less than 0.5 mm.
