On-line Preconcentration System Using Mini-column Packed with a Chelating Resin for the Characterization of Seasonal Variations of Trace Elements in Seawater by ICP-MS and ICP-AES

Abstract

An on-line column preconcentration technique coupled with inductively coupled plasma-mass spectrometry (ICP-MS) and -atomic emission spectrometry (ICP-AES) was developed using a mini-column (ca. 3 mm i.d., 40 mm length), that was packed with chelating resin (0.2 g) of iminodiacetic acid groups, Muromac A-1. After the preconcentration step, the column was washed with ammonium acetate buffer (pH 5.5) and water to remove major elements, such as Ca and Mg, and then eluted with 4 ml of 2 mol l -1 nitric acid. Eleven trace elements (Al, V, Fe, Co, Ni, Cu, Zn, Cd, Pb, Th and U) in seawater were determined by ICP-MS/AES. Recoveries for most of the elements tested were over 90%, although those for Al, V and Th were around 70%. The accuracy of the proposed method was evaluated by analyzing a standard reference material of seawater (NASS-4, NRC Canada). The values of Fe, Co, Ni, Cu, Zn, Cd and Pb obtained with the present method showed good agreement with the certified values as judged from the standard deviation. The method was successfully applied to characterize seasonal variations of trace elements in deep seawater (DSW) and surface seawater (SSW). In addition, no serious decrease in analytical performance of the present column system was observed during the experimental period of about 1 year.

Reference Materials in Geoanalytical and Environmental Research ‐ Review for 2006 and 2007

“…In the 2006-2007 literature, the accuracy of analytical techniques was evaluated by means of analyses of the certified reference water samples CASS-2, CASS-3, CASS-4 and NASS-4, NASS-5 (Haratake et al 2006, Grinberg et al 2006, Anthemidis and Ioannou 2006, Shiller and Bairamadgi 2006, Riso et al 2006, Point et al 2007, Sabarudin et al 2007a,b, Petrov et al 2007, Rahmi et al 2007, Meeravali et al 2007, Sumida et al 2006a,b, Leal et al 2006, Lannuzel et al 2006. New techniques, such as adsorptive stripping voltammetry, were applied to analyse NASS-5 and the estuarine water SLEW-3 (Korolczuk et al 2007).…”

Simultaneous Determination of Cadmium, Lead, Copper, and Thallium in Highly Saline Samples by Anodic Stripping Voltammetry (ASV) Using Mercury‐Film and Bismuth‐Film Electrodes

“…The current analytical techniques for trace determination of heavy metals in highly saline samples such as dialysis concentrates, seawater and hydrothermal fluids are graphite furnace atomic absorption spectrometry (GF-AAS) [22 -25], inductively coupled plasma atomic emission spectrometry (ICP-AES) [26,27], and inductively coupled plasma mass spectrometry (ICP-MS) [28,29]. However, analyses of dialysis concentrates cannot be directly carried out by GF-AAS, ICP-AES or ICP-MS due to the high salt content of the samples, causing matrix interferences and insufficient precision.…”

The Applicability of Plasma‐Based Techniques to Biological Monitoring

“…Determination of suspended particulate matter in open ocean seawater leads to general statements concerning soil pollution and allows the vertical distribution of pollutants to be assessed [88]. Characterization of seasonal variations of trace elements in deep seawater and surface seawater was also performed [89]. Antarctic snow was analyzed for similar purposes [90].…”