Determination of arsenic, antimony, bismuth, cadmium, copper, lead, molybdenum, silver and zinc in geological materials by atomic-absorption spectrometry

Abstract

Arsenic, antimony, bismuth, cadmium, copper, lead, molybdenum, silver and zinc are very-useful elements in geochemical exploration. In the proposed method, geological samples are fused with potassium pyrosulphate and the fusate is dissolved in a solution of hydrochloric acid, ascorbic acid and potassium iodide. When this solution is shaken with a 1O0/o VNAliquat 336isobutyl methyl ketone organic phase, the nine elements of interest are selectively partitioned in the organic phase. All nine elements can then be determined in the organic phase using flame atomic-absorption spectrometry. The method is rapid and allows the determination of Ag and Cd at levels down to 0.1 p.p.m., Cu, Mo, and Zn down to 0.5 p.p.rn., Pb, Bi and Sb down to 1 p.p.m. and As down to 5 p.p.m. in geological materials.

Determination of Ag and Cd in Soil and Sediment Samples by Graphite Furnace Atomic Absorption Spectrometry (GFAAS)

“…Zongshou Yu et al (4) reported different digestion techniques such as HF/HClO 4 , HF/HNO 3 , and HF/H 2 SO 4 to dissolve geological samples for trace element determination. Silver and cadmium were also estimated in geological samples with the help of FAAS and GFAAS by several authors using different acid and fusion mixtures (3,(5)(6)(7)(8). There are some complete dissolution and some partial decomposition techniques.…”

Is extraction of Fe from iron based reference materials an appropriate method for determination of trace elements?

“…an inductively coupled plasma (AES-ICP) [1][2][3][4][5], or after the separation and concentration of the elements of interest [6][7][8][9][10][11][12]. Radioanalytical instrumental methods (instrumental neutron activation analysis -INAA, X-ray fluorescence spectrometry -XRF, and particle (proton) induced X-ray emission -PIXE) are rarely used to determine trace elements in these matrices due to matrix and inter-element interferences and background effects [13][14][15][16][17][18][19][20][21][22][23].…”

Determination of major and trace elements in iron-nickel-copper-cobalt ore reference materials using k0-NAA

“…A number of studies have been carried out concerning the determination of trace elements in iron ore materials directly from the dissolved samples by atomic absorption spectrometry (AAS) and atomic emission spectrometry with an inductively coupled plasma (AES-ICP) [1][2][3][4][5][6][7], or after the separation and concentration of the elements of interest [8][9][10][11][12][13][14][15]. Instrumental methods (instrumental neutron activation analysis -INAA, X-ray fluorescence spectrometry -XRF, and particle (proton) induced X-ray emission -PIXE) are also *Author for correspondence (E-mail: radojko.jacimovic@ijs.si).…”