Membrane solubilization with tetramethylammonium hydroxide for the preconcentration and electrothermal atomic absorption spectrometric determination of trace amounts of arsenic in water

Hata, Noritake; Yamada, Hiromi; Kasahara, Issei; Taguchi, Shigeru

doi:10.1039/a806856i

Cited by 25 publications

(4 citation statements)

References 13 publications

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“…Specific oxidation of As(III) to As(V) species was performed following the procedure described by Hata et al, 13 with a slight modification. A volume of 50 mL of sample solution was placed in a digestion flask adds and dissolves 0.25 g of K 2 S 2 O 8 to oxidize arsenite to arsenate.…”

Section: Extraction and Determination Of Total Inorganic As Speciesmentioning

confidence: 99%

Ionic liquid as ion-pairing reagent for liquid–liquid microextraction and preconcentration of arsenic species in natural waters followed by ETAAS

Monasterio

Wuilloud

2010

J. Anal. At. Spectrom.

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A simple and highly efficient microextraction methodology was developed for arsenate [As(V)], arsenite [As(III)] and organic arsenic (i.e., DMA and MMA) preconcentration and determination based on the novel use of tetradecyl(trihexyl)phosphonium chloride ionic liquid (CYPHOS Ò IL 101) as an ionpairing reagent. As(V) species was selectively separated by forming As(V)-molybdate heteropoly acid [As(V)-MHPA] complex with molybdenum, followed by ion-pairing reaction with CYPHOS Ò IL 101 and microextraction in chloroform. Arsenic detection was performed by electrothermal atomic absorption spectrometry (ETAAS). Under optimum conditions, the analyte extraction efficiency was 99% and yielded a preconcentration factor of 125 with only 5.00 mL of sample. The detection limit was 0.002 mg L À1 as As(V). The relative standard deviation (RSD) for six replicate measurements at 1.5 mg L À1 of As were 4.1%, 4.9% and 5.0% for As(V), As(III) and total organoarsenicals, respectively. The proposed methodology was successfully applied for As speciation analysis in several types of water samples.

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Section: Extraction and Determination Of Total Inorganic As Speciesmentioning

confidence: 99%

Ionic liquid as ion-pairing reagent for liquid–liquid microextraction and preconcentration of arsenic species in natural waters followed by ETAAS

Monasterio

Wuilloud

2010

J. Anal. At. Spectrom.

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“…A method of determining the total As content in water after preconcentration was proposed by authors (Noriko et al, 1999). The method is based on formation of arsenic molybdate tetrametyl phosphonium, and its subsequent sorption with a membrane filter on the basis of cellulose ethers.…”

Section: Methods Of As Ions Concentrationmentioning

confidence: 99%

Sorption Concentration of Arsenic Ions by Magnetite

Kharlyamov¹,

Katasonov²,

Mavrin³

et al. 2014

MAS

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This paper is focused on the possibility of using magnetite powders obtained by chemical and plasma-chemical method for sorption concentration of arsenic ions. Processes of arsenic concentration by two-site sorption in magnetite-water system have been studied, and the optimal conditions for concentration have been defined. In static mode, effects of pH, temperature and contact time on the adsorption process have been studied. As a result, a method for pre-sorption concentration has been proposed, allowing reducing the lower limit of the atomic absorption determination of arsenic content.

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“…Solid phase extraction techniques, using a common membrane filter (MF), are one of the excellent strategies used in achieving a high level of preconcentration for trace elements because they are simple, fast, user-friendly, and cost-effective. Many applications of MF on solid phase extraction for some trace and ultra-trace analyses have been published, including developed techniques for phosphate [22], silicon [23], arsenic [24][25][26][27], surfactants [28,29], and formaldehyde [30]. In these proposed methods, the target analytes were collected on the MF as complexes or ion-associate forms.…”

Section: Introductionmentioning

confidence: 99%

Microdroplet anodic stripping voltammetry at the in situ preparing antimony‐modified rotating disk electrode for determination of Cd(II) and Pb(II)

et al. 2023

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A simple electroanalytical method for Cd(II) and Pb(II) detection based on differential pulse anodic stripping voltammetry (DPSV) with in situ prepared antimony‐modified glassy carbon rotating disk electrode (in situ Sb‐GC‐RDE) was developed. The electrochemical detection was performed in a microdroplet (50 μL) of 0.01 M hydrochloric acid that is placed between the electrode surface (top) and a Parafilm®‐covered glass slide to maintain a hydrophobic surface (bottom). This method includes a preconcentration process using a membrane filter (MF). The target metal ions were complexed with 1‐(2‐pyridylazo)‐2‐naphthol (PAN) as a chelating agent, which was accumulated on the MF via filtration. The RDE microdroplet anodic stripping voltammetry was suitable for the elution and determination of metal ions accumulated on the MF. The in situ preparation of antimony‐modified electrode allows the use of common GC electrode with high performance. The detection limits for Cd(II) and Pb(II) were 1.4 and 1.1 μg/L, respectively. The proposed method was successfully used in natural water samples for the simultaneous determination of Cd(II) and Pb(II).

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Membrane solubilization with tetramethylammonium hydroxide for the preconcentration and electrothermal atomic absorption spectrometric determination of trace amounts of arsenic in water

Cited by 25 publications

References 13 publications

Ionic liquid as ion-pairing reagent for liquid–liquid microextraction and preconcentration of arsenic species in natural waters followed by ETAAS

Ionic liquid as ion-pairing reagent for liquid–liquid microextraction and preconcentration of arsenic species in natural waters followed by ETAAS

Sorption Concentration of Arsenic Ions by Magnetite

Microdroplet anodic stripping voltammetry at the in situ preparing antimony‐modified rotating disk electrode for determination of Cd(II) and Pb(II)

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