A study of method robustness for arsenic speciation in drinking water samples by anion exchange HPLC-ICP-MS

Day, Jason; Montes-Bayón, Marı́a; Vonderheide, Anne P.; Caruso, Joseph A.

doi:10.1007/s00216-002-1384-x

Cited by 59 publications

(32 citation statements)

References 13 publications

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“…36(6):1029-47. DOI: 10.1007/s10653-014-9599-2 7 Arsenic speciation was carried out on a small number of samples by HPLC-ICP-MS. Arsenite and arsenate ions were separated on an Agilent G3154A HPLC column before detection by an Agilent 7500 Series ICP-MS (Day et al, 2002;Milstein et al, 2002;Li et al, 2010;Komorowicz and Barałkiewicz, 2011). Concentrations of arsenic species in the water samples were quantified by interpolation in the respective linear calibration plots, obtained for concentrations 0.5-100 µg/L.…”

Section: Methodsmentioning

confidence: 99%

Geological factors controlling occurrence and distribution of arsenic in groundwaters from the southern margin of the Duero Basin, Spain

Giménez-Forcada

Smedley

2014

Environ Geochem Health

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Groundwater from springs and boreholes on the southern edge of the Cenozoic Duero Basin (DB) of Spain has concentrations of arsenic (As) which are commonly above the EC drinking-water limit of 10 µg/L, and reach observed values up to 241 µg/L. Groundwater compositions within the sedimentary aquifer vary from Ca-HCO 3 type, variably affected by evaporation and agricultural pollution at shallow levels, to Na-HCO 3 compositions in deeper boreholes of the basin. Groundwater conditions are mainly oxidising but reducing groundwaters exist in sub-basins within the aquifer, localised flow paths likely being influenced by basement structure. Arsenic concentrations are spatially variable, reaching up to 38 µg/L in springs of the Spanish Central System (SCS) basement aquifer and up to 62 µg/L in springs from the DB. Highest As concentrations are associated with the Na-HCO 3 compositions in deep boreholes (200-450 m depth) within the DB. These have high pH values (up to 9.6) can give rise to associated elevated concentrations of V and U (up to 64 µg/L and 30 µg/L respectively). In the deep borehole waters of the DB, oxidising flows derived from the mineralised igneous-metamorphic basement and discharging via major faults, are considered the origin of the higher concentrations. Compositions are consistent with desorption of As and other anionic species from metal oxyhydroxides in an oxic environment. Under locally reducing conditions prevalent in some low-flow parts of the DB, an absence of detectable dissolved As is coincident with low or undetectable SO 4 concentrations, and consistent with loss via formation of authigenic sulphide minerals. Mitigation measures are needed urgently in this semi-arid region where provision of alternative sources of safe drinking water is logistically difficult and expensive.

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Section: Methodsmentioning

confidence: 99%

Geological factors controlling occurrence and distribution of arsenic in groundwaters from the southern margin of the Duero Basin, Spain

Giménez-Forcada

Smedley

2014

Environ Geochem Health

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“…Applications have been reported for the analysis of organic acids [118], complexing agents [119], inorganic or organometallic compounds like species of arsenic, selenium, and chromium (IV) [120,121,122,123], or oxoanions [124] in water.…”

Section: Ion Chromatographymentioning

confidence: 99%

LC-MS analysis in the aquatic environment and in water treatment ? a critical review

Zwiener

Frimmel

2004

Analytical and Bioanalytical Chemistry

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LC-MS has become an invaluable technique for trace analysis of polar compounds in aqueous samples of the environment and in water treatment. LC-MS is of particular importance due to the impetus it has provided for research into the occurrence and fate of polar contaminants, and of their even more polar transformation products. Mass spectrometric detection and identification is most widely used in combination with sample preconcentration, chromatographic separation and atmospheric pressure ionization (API). The focus of the first part of this review is directed particularly toward instruments and method development with respect to their applications for detecting emerging contaminants, microorganisms and humic substances (HS). The current status and future perspectives of 1) mass analyzers, 2) ionization techniques to interface liquid chromatography (LC) with mass spectrometry (MS), 3) methods for preconcentration and separation with respect to their application for water analysis are discussed and examples of applications are given. Quadrupole and ion trap mass analyzers with electrospray ionization (ESI) and atmospheric pressure chemical ionization (APCI) are already applied in routine analysis. Time-of-flight (TOF) mass spectrometers are of particular interest for accurate mass measurements for identification of unknowns. For non-polar compounds, different ionization approaches have been described, such as atmospheric pressure photoionization (APPI), electrochemistry with ESI, or electron capture ionization with APCI. In sample preconcentration and separation, solid phase extraction (SPE) with different non-selective sorbent materials and HPLC on reversed-phase materials (RP-HPLC) play the dominant role. In addition, various on-line and miniaturized approaches for sample extraction and sample introduction into the MS have been used. Ion chromatography (IC), size-exclusion chromatography (SEC), and capillary electrophoresis (CE) are alternative separation techniques. Furthermore, the issues of compound identification, matrix effects on quantitation, development of mass spectral libraries and the topic of connecting analysis and toxicity bioassays are addressed.

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“…This problem can be solved chromatographically by using an eluent system capable of separating chloride from the arsenic species and therefore avoid the chloride interference. Such eluent systems include ammonium phosphate [10][11][12], sodium phosphate [13,14], ammonium carbonate [15,16], tartaric acid [17], nitric acid [18], tetramethylammonium hydroxide [19], sodium hydroxide [20], and formate [21]. However, optimal resolution of arsenic species is dependent on both the column and the eluent used.…”

Section: Introductionmentioning

confidence: 99%

Speciation of arsenic by ion chromatography inductively coupled plasma mass spectrometry using ammonium eluents

Chen¹,

Akter

Rahman

et al. 2006

J of Separation Science

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Original PaperSpeciation of arsenic by ion chromatography inductively coupled plasma mass spectrometry using ammonium eluents A method based on ion chromatography (IC) and inductively coupled plasma MS (ICP-MS) was developed for the speciation of arsenic in water and soil extracts. An anion-exchange column (G3154A/101) was used to separate As(III), As(V), dimethylarsinic acid (DMA), and monomethylarsonic acid (MMA) with excellent resolution. Various ammonium salts, including NH 4 H 2 PO 4 , (NH 4 ) 2 HPO 4 , (NH 4 ) 2 CO 3 , and NH 4 HCO 3 , were examined as eluents to reduce matrix interference from chloride and to solve clogging problems. The best arsenic speciation was obtained within 9 min with excellent resolution and without interference from high chloride concentrations using an eluent containing 7.5 mM (NH 4 ) 2 HPO 4 at pH 7.9. The detection limits for the target arsenic species ranged from 0.1 to 0.4 lg/L with direct injection of sample without matrix elimination. The proposed method was effectively demonstrated by determining arsenic species in contaminated waters and soils of Bangladesh.

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A study of method robustness for arsenic speciation in drinking water samples by anion exchange HPLC-ICP-MS

Cited by 59 publications

References 13 publications

Geological factors controlling occurrence and distribution of arsenic in groundwaters from the southern margin of the Duero Basin, Spain

Geological factors controlling occurrence and distribution of arsenic in groundwaters from the southern margin of the Duero Basin, Spain

LC-MS analysis in the aquatic environment and in water treatment ? a critical review

Speciation of arsenic by ion chromatography inductively coupled plasma mass spectrometry using ammonium eluents

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