Solid sampling electrothermal vaporization inductively coupled plasma atomic emission spectrometric method for analysis of amphipods ( Dikerogammarus villosus) samples

Abstract

A solid sampling electrothermal vaporization inductively coupled plasma atomic emission spectrometric (ETV-ICP-AES) method was developed for determination of Ag, Cd, Co, Cu, Mn, Pb and Zn in amphipods ( Dikerogammarus villosus) applied for river water monitoring. The organic part of the dried and homogenized samples was decomposed at 450 °C in a quartz boat. Ashed sample (2 mg) was weighed into the graphite boat and the carbonates were decomposed by addition of 40 μl 1 M nitric acid. The dried inorganic residue was introduced into the graphite furnace and vaporized at 1350 °C applying Freon 22 gaseous halogenating agent. The calibration was carried out by dry residues of standard solutions. The same amphipod sample was digested and analyzed by inductively coupled plasma mass spectrometry (ICP-MS). The analytical results show a difference between 2 and 25%.