On-line method for the analysis of sea-water for trace elements by inductively coupled plasma mass spectrometry. Plenary lecture

McLaren, J. W.; Lam, Joseph W. H.; Berman, S. S.; Akatsuka, Kunihiko; Azeredo, Maria Aparecida Alves

doi:10.1039/ja9930800279

Cited by 60 publications

(17 citation statements)

References 15 publications

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“…However, sample dilution results in a difficulty in determining the analyte elements present at trace and ultratrace levels. 10 In order to avoid matrix effects and to eliminate interelement spectral interferences, ion chromatography (IC) 11,12 and high-performance liquid chromatography (HPLC) [13][14][15] have been used as effective techniques for sample pretreatment in ICP-MS, though they have some disadvantages, such as a long measuring time (more than 1 h per sample) and lowering the detection sensitivities. Flow-injection (FI) techniques coupled with ICP-MS have been investigated for the purpose of performing the on-line sample pretreatment of high-salt-content samples.…”

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confidence: 99%

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Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin

et al. 2000

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A new technique for the preconcentration of trace elements and matrix elimination with a chitosan-based chelating resin was proposed as a useful pretreatment prior to a measurement by inductively coupled plasma-mass spectrometry (ICP-MS). A small volume of the sample solution (80 µl) was discretely introduced into a nebulizer of ICP-MS using a segmented flow injection (SFI) system; a maximum of fifteen elements were simultaneously measured by a single injection. A chitosan-based chelating resin containing iminodiacetate (IDA) functional groups was used for matrix elimination and enrichment of analyte metal ions. Several metal ions, such as Al, Fe, Ni, Co, Cu, Zn, Ag, Cd, Pb and U, were quantitatively retained on the IDA chelating resin in a micro-column (resin: 1 ml) at pH 6, whereas Na, K, Mg and Ca were completely eluted from the column by washing with an ammonium acetate solution. The concentrations of 24 and 26 elements in river water certified reference materials, JAC 0031 and JAC 0032, respectively, were determined by the proposed SFI/ICP-MS system after pretreating the samples with the proposed technique, as well as without any pretreatment. The thus-obtained analytical data were evaluated by comparing them with the reference values, as well as with those obtained in other studies.

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“…Chelating resins, such as an iminodiacetate (IDA) type of Chelex-100 27-31 and 8-hydroxyquinoline, [32][33][34][35][36] have been widely employed for preconcentration and matrix elimination in highly saline water analysis. In Chelex-100 resin, a volume change of the resin can occur by pH change, which causes the eluent flow to be irregular.…”

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Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin

et al. 2000

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“…[4,5]. Immobilized 8-HQ on solid substrates (i.e., glass, silica, polymers) is among the most frequently used immobilized chelating agents [6,7,8,9,10,11,12,13,14], probably because of its high efficiency (faster exchange rate of the surface-bound functional groups) [7], resistance to swelling, and selectivity for several metals over the alkali and alkaline earth metals [15]. It has been successfully used for the pre-concentration of heavy metals from natural waters [16] and seawater [8,9,13,16], but information on Cr(III) determination by FI-FAAS using this immobilized chelating resin in waters is scarce [13,17].…”

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confidence: 99%

On-Line pre-concentration of Cr(III) and Mn(II) in FI-FAAS: A critical study involving interference effects and analytical use of an immobilized 8-hydroxyquinoline minicolumn

Bruhn

Pino

Campos

et al. 2002

Analytical and Bioanalytical Chemistry

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A flow injection system with a pre-concentration minicolumn based on a chelating resin was coupled to a flame atomic absorption spectrometer. The focus of this work was the investigation of interference effects and the analytical applicability of the azo-immobilized 8-hydroxyquinoline on controlled-pore glass for the determination of Cr and Mn in mussel and non-fat milk powder. All studied concomitants affected the retention of Cr(III). These effects are probably related to the formation of hydroxo-complexes at the optimum pH range 9.0-10. The positive effect caused by Ca(II) was exploited to increase the retention of Cr(III) species and to improve the slope by 70%. The interferences on Mn(II) retention were less severe. The quantification of Cr and Mn was performed by standard additions. The proposed methodology was validated by analysis of three certified reference materials of mussels (Cr and Mn) and non-fat milk powder (Mn) with a mean relative percent error of <6.5% and mean relative standard deviation of <13%. Chromium and Mn were determined in typical Chilean mussels samples, and Mn was determined in non-fat milk powder samples. Results agreed at the 95% confidence level with those obtained by electrothermal atomic absorption spectrometry (ETAAS) using graphite furnace atomization. The method detection limits for a 30 s pre-concentration time were 0.9 and 1.1 micro g L(-1) for Mn, and 2.2 and 2.5 micro g L(-1) for Cr in acid digested solutions of mussel and non-fat milk, respectively. The methodology is simple, fast (sampling frequency 60-72 h(-1)), reliable, of low cost, and can be applied to the determination of traces of Cr (> or =0.18 micro g g(-1)) and Mn (> or =0.6 micro g g(-1)) in mussel samples, and Mn (> or =0.37 micro g g(-1)) in non-fat milk powder.

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“…Many countries have established quality standards of drinking-water, for example 0.05 gg/ml for nickel in France * To whom correspondence should be addressed Tab'yankina [15] presented the determination of trace nickel by DC arc atomic emission spectrometry (AES) with 2-mercaptobenzthiazole/polyacrylonitrile fiber sorbent. Carboxymethyl cellulose 8-hydroxy-s-sulfo-7-quinolyl ester (oxine CM-cellulose) [16] and ICP-MS with I-8-HOQ column [17] have been used for Ni determination by ICP-mass spectrometry (MS). Most of these methods are, however, complicated and time-consuming.…”

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Determination of nickel in water by electrothermal atomic absorption spectrometry with preconcentration on a tungsten foil

et al. 1998

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Abstract.A preconcentration method for nickel in waters involving adsorption on tungsten foil, followed by electrothermal atomic absorption spectrometry (ETAAS) with a tungsten tube atomizer is described. The most suitable pH for nickel adsorption was 5 and the optimum immersion time was 2 rain. Severe interferences from co-existing elements (A1, Ca, Cu, Fe, K, Mg, Na, Pb and Zn) on the Ni AA signal were observed. Under optimal conditions, the preconcentration of nickel on W foil could eliminate interferences from these elements. The detection limit of nickel by preconcentration-ETAAS was 0.1 ng/ml (3S/N). The method with preconcentration on tungsten foil was applied to the determination of nickel in river water. The recovery of spiked nickel was 93-102%. The tungsten foil preconcentration method is sensitive, simple, and convenient. This adsorption method can be utilized in in situ-sampling of ultra-trace nickel in environmental samples (water). Furthermore, after sampling it is easy to carry and store the W-foil without contamination for long time.Key words: preconcentration, adsorption on tungsten foil, nickel, electrothermal atomic absorption spectrometry, water.Nickel, even in small concentrations, has severe shortand long-term effects on the health of individuals, e.g. carcinogenic and atopic dermatitis [1,2]. Trace nickel is present from natural sources as well as from contaminated water arising from manufactures. Many countries have established quality standards of drinking-water, for example 0.05 gg/ml for nickel in France * To whom correspondence should be addressed Tab'yankina [15] presented the determination of trace nickel by DC arc atomic emission spectrometry (AES) with 2-mercaptobenzthiazole/polyacrylonitrile fiber sorbent. Carboxymethyl cellulose 8-hydroxy-s-sulfo-7-quinolyl ester (oxine CM-cellulose) [16] and ICP-MS with I-8-HOQ column [17] have been used for Ni determination by ICP-mass spectrometry (MS). Most of these methods are, however, complicated and time-consuming. Adsorption on tungsten metal is a simple, conventional, low cost, and time saving preconcentration method. Wolff et al. [18] reported the preconcentration of Cd, Cu, Pb, Ag and Zn in water at the ng/1 level by adsorption onto tungsten wire. Hoshino et al. [19] and Newton et al. [20] described GFAAS with tungsten wire preconcentration for Ag, Cd, Co, Cr,

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On-line method for the analysis of sea-water for trace elements by inductively coupled plasma mass spectrometry. Plenary lecture

Cited by 60 publications

References 15 publications

Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin

Simultaneous Determination of Trace Elements in River-water Samples by ICP-MS in Combination with a Discrete Microsampling Technique after Enrichment with a Chitosan-based Chelating Resin

On-Line pre-concentration of Cr(III) and Mn(II) in FI-FAAS: A critical study involving interference effects and analytical use of an immobilized 8-hydroxyquinoline minicolumn

Determination of nickel in water by electrothermal atomic absorption spectrometry with preconcentration on a tungsten foil

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