Inorganic speciation of As(III, V), Se(IV, VI) and Sb(III, V) in natural water with GF-AAS using solid phase extraction technology

Zhang, Liang; Morita, Yukitoki; Sakuragawa, Akio; Isozaki, Akinori

doi:10.1016/j.talanta.2006.12.001

Cited by 116 publications

(42 citation statements)

References 20 publications

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“…In Take Shima seawater sample, the observed value of As was almost the same as that in North Pacific seawater (1.11 µg L -1 ) [15] and was slightly higher than that in Pasific coastal seawater (1.06 µg L -1 ) [12] . Total Se in Take Shima was compared with that in other seawater and lake water.…”

Section: The Analytical Results Of Oxo-anion Forming Elements In Seawmentioning

confidence: 63%

“…Furthermore, this method was applied to the determination of oxo-anion forming elements in real seawater sample. In natural water environmental, V, As, Se and Sb is essential elements for biological systems [11][12][13][14] . The observed values of those elements in real seawater sample were shown in Table 4.…”

Section: The Analytical Results Of Oxo-anion Forming Elements In Seawmentioning

confidence: 99%

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AN IN-SYRINGE La CO-PRECIPITATION METHOD FOR PRE-CONCENTRATION OF OXO-ANIONS FORMING ELEMENTS IN SEAWATER FOLLOWED BY ICP-MS MEASUREMENT

Rahmi¹,

Zhu²,

Fujimori³

et al. 2015

J.Ris.Kim.

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A lanthanum (La) co-precipitation method was explored for pre-concentration of oxo-anion forming elements followed by measurement with Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The co-precipitation and subsequent washing and elution steps were performed in a 25 mL-volume syringe in order to save the sample consumption and to avoid the contamination from the experimental environment. In the present work, various parameters such as the concentration of La added into the sample solution, the pH, aging time, and so on were optimized to obtain good recoveries and analytical detection limits for V, As, Se, Sb, and W. Generally, in the coprecipitation method, high concentration of precipitant (in this case, La) causes a serious problem of signal memory effect in ICP-MS measurement. To reduce such memory effect, in the present experiment, high level of La was removed by passing the analyte solution (i.e., lanthanum hydroxide dissolved in 1 M HNO3) through a mini column packed with cation-exchange resins. The method thus obtained was evaluated through the measurement of V, As, Se, Sb and W in seawater reference materials (CASS-4 and NASS-5). The recoveries exceeded 80%, and the observed values were in good agreement with the certified values. Thus, the present method was applied to the determination of trace elements in real seawater sample.

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Section: The Analytical Results Of Oxo-anion Forming Elements In Seawmentioning

confidence: 63%

Section: The Analytical Results Of Oxo-anion Forming Elements In Seawmentioning

confidence: 99%

AN IN-SYRINGE La CO-PRECIPITATION METHOD FOR PRE-CONCENTRATION OF OXO-ANIONS FORMING ELEMENTS IN SEAWATER FOLLOWED BY ICP-MS MEASUREMENT

Rahmi¹,

Zhu²,

Fujimori³

et al. 2015

J.Ris.Kim.

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“…An analytical method using solid-phase extraction (SPE), followed by graphite furnace atomic absorption spectrometry (GFAAS), allows the speciation of elements to be determined. It is easy to conduct, has low capital (equipment) cost, and low running costs, although this method cannot be used to simultaneously determine many analytes unlike HPLC-ICP-MS. Several methods combining SPE with GFAAS have been reported for the determination of iAs [12][13][14] and DPAA 15 in water. However, the separation analysis of DPAA, PAA, and iAs using SPE and GFAAS has not yet been reported.…”

Section: Introductionmentioning

confidence: 99%

Determination of Diphenylarsinic Acid, Phenylarsonic Acid and Inorganic Arsenic in Drinking Water by Graphite-furnace Atomic-absorption Spectrometry after Simultaneous Separation and Preconcentration with Solid-phase Extraction Disks

et al. 2013

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A simple method of graphite-furnace atomic-absorption spectrometry (GFAAS) after solid-phase extraction (SPE) was developed for the determination of diphenylarsinic acid (DPAA), phenylarsonic acid (PAA), and inorganic arsenic (iAs) in drinking water. This method involves the simultaneous collection of DPAA, PAA, and iAs using three stacked SPE disks, i.e., an Empore SDB-XD disk (the upper layer), an activated carbon disk (the middle layer), and a Cation-SR disk loaded with Zr and Ca (ZrCa-CED; the lower layer). A 200-mL aqueous sample was adjusted to pH 3 with nitric acid and passed through the SPE disks at a flow rate of 15 mL min -1 , to concentrate DPAA on the SDB-XD disk, PAA on the activated carbon disk, and iAs on the ZrCa-CED. The As compounds were eluted from the disks with 10 mL of ethanol containing 0.5 mol L -1 ammonia solution for DPAA, 20 mL of 1 mol L -1 ammonia solution for PAA, and 20 mL of 6 mol L -1 hydrochloric acid for iAs. The eluates of DPAA, PAA, and iAs were diluted to 20, 25, and 25 mL, respectively, with deionized water, and then analyzed by GFAAS. The detection limits of As (three-times the standard deviation (n = 3) of the blank values) were 0.13 and 0.16 μg L -1 at enrichment factors of 10 and 8, respectively, using a 200-mL water sample. Spike tests with 2 μg (10 μg L -1 ) of DPAA, PAA, and iAs in 200 mL of tap water and bottled drinking water showed good recoveries (96.1 -103.8%).

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“…So it is important to have selective and sensitive methods to identify each species and determine their levels. Over the past two decades various instrumental techniques including UV-visible spectrophotometry, 3 atomic/molecular fluorescence spectrometry, [4][5][6][7] high performance liquid chromatography, 5 hydride generation atomic absorption spectrometry, [8][9][10][11][12] differential pulse cathodic stripping voltammetry, 13 inductively coupled plasma mass spectrometry, 14 ion chromatography [15][16] and flow injection analysis coupled with hydride generation atomic fluorescence spectrometry 17 have been developed and used for Se speciation.…”

Section: Introductionmentioning

confidence: 99%

The Investigation of a Novel Indicator System for Trace Determination and Speciation of Selenium in Natural Water Samples by Kinetic Spectrophotometric Detection

Gürkan¹,

Ulusoy²

2010

Bulletin of the Korean Chemical Society

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A novel catalytic kinetic method is proposed for the determination of Se(IV), Se(VI) and total inorganic selenium in water based on the catalytic effect of Se(IV) on the reduction of bromate by p-nitrophenylhydrazine at pH 3.0. The generated bromine, Br2 or Cl2 plus Br2 in 0.1 M NaCl (or NaBr) environment efficiently decolorized Calmagite and the reaction was monitored spectrophotometrically at 523 nm as a function of time. In this indicator reaction, bromide acted as an activator for the catalysis of selenium (IV) and a reducing agent for selenium (VI) at pH 3.0, which allowed the determination of total selenium. The fixed time method was adopted for the determination and speciation of inorganic selenium. Under the optimum conditions, the calibration graph are linear in the range 1 -35 µg L for the fixed time method (7 min). All of the variables that affect the sensitivity at 523 nm were investigated, and the optimum conditions were established. The interference effect of various cations and anions on the Se (IV) determination was also studied. The selectivity of the selenium determination was greatly improved with the use of the strongly cation exchange resin such as Amberlite IR120 plus. The proposed kinetic method was validated statistically and through recovery studies in natural water samples. The RSDs for ten replicate measurements of 5, 15 and 25 µg L -1of Se(IV) and Se(VI) was changed between 2.1 -4.85%. Analyses of a certified standard reference material (NIST SRM 1643e) for selenium using the fixed-time method showed that the proposed kinetic method has good accuracy. Se(IV), Se(VI) and total inorganic selenium in environmental water samples have been successfully determined by this method after selective reduction of Se(VI) to Se(IV).

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Inorganic speciation of As(III, V), Se(IV, VI) and Sb(III, V) in natural water with GF-AAS using solid phase extraction technology

Cited by 116 publications

References 20 publications

AN IN-SYRINGE La CO-PRECIPITATION METHOD FOR PRE-CONCENTRATION OF OXO-ANIONS FORMING ELEMENTS IN SEAWATER FOLLOWED BY ICP-MS MEASUREMENT

AN IN-SYRINGE La CO-PRECIPITATION METHOD FOR PRE-CONCENTRATION OF OXO-ANIONS FORMING ELEMENTS IN SEAWATER FOLLOWED BY ICP-MS MEASUREMENT

Determination of Diphenylarsinic Acid, Phenylarsonic Acid and Inorganic Arsenic in Drinking Water by Graphite-furnace Atomic-absorption Spectrometry after Simultaneous Separation and Preconcentration with Solid-phase Extraction Disks

The Investigation of a Novel Indicator System for Trace Determination and Speciation of Selenium in Natural Water Samples by Kinetic Spectrophotometric Detection

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