Feasibility of Separation and Quantification of Inorganic Arsenic Species Using Ion-Exchange Membranes and Laser-Induced Breakdown Spectroscopy

Nam, Sang‐Ho; seulwoo, Kwon; Lee, Yonghoon

doi:10.1080/00032719.2018.1453517

Cited by 11 publications

(5 citation statements)

References 34 publications

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“…In our previous study (Nam et al 2018), the inorganic arsenic was measured by ion-exchange membrane and LIBS. The linear dynamic range was from 20 to 500 mg/ kg As(V), and the LOD was 10 mg/kg As(V).…”

Section: Calibration Curve and Analytical Performancesmentioning

confidence: 99%

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Feasibility of quantitative inorganic arsenic speciation at the parts-per-trillion level using solid phase extraction and femtosecond laser ablation inductively coupled plasma mass spectrometry

et al. 2021

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Toxicity of arsenic compounds depends on the chemical structure as well as the concentration. Thus, separation of the toxic arsenic species should precede the quantification for the accurate toxicity assessment. Ion chromatography inductively coupled plasma mass spectrometry (IC-ICP-MS) has been the most popular method for separation and quantification of toxic arsenic species. However, the method requires complex instrument, elaborate sample preparation, and long analysis time. In this work, toxic inorganic arsenic species in water was separated by the simple solid phase extraction (SPE) using a strong anion-exchange membrane filter, and then the membrane filter was analyzed by femtosecond laser ablation inductively coupled plasma mass spectrometry (fs-LA-ICP-MS). The pH value of the sample was adjusted to 4 using ammonium hydroxide and phosphoric acid for the complete separation of the toxic inorganic arsenic from the other organic arsenics. The linear dynamic range was from 0.5 to 1000 μg/kg, and the correlation coefficient was 0.99989. The recovery efficiency was 96‑106%. The detection limit of the inorganic arsenic was 0.028 μg/kg. Our results indicate that SPE-fs-LA-ICP-MS provides enough analytical performance to analyze the toxic inorganic arsenic in water at the level of parts per trillion using the simple separation method and the rapid laser ablation sampling.

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Section: Calibration Curve and Analytical Performancesmentioning

confidence: 99%

“…Recently, inorganic arsenics in water have been separated using the ion-exchange membranes, and detected by laser-induced breakdown spectroscopy (LIBS) (Nam et al 2018). This method was able to separate inorganic arsenic species in a simpler way than the conventional chromatographic methods used for arsenic species analysis.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of quantitative inorganic arsenic speciation at the parts-per-trillion level using solid phase extraction and femtosecond laser ablation inductively coupled plasma mass spectrometry

et al. 2021

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“…The method has been universally used because it was very sensitive and accurate. LIBS has been used for chromium and arsenic speciation after the elemental species were separated by ion exchange membrane (Dockery et al 2005;Nam et al 2018). LIBS has several advantage in terms of the simple sample preparation, fast analysis time, and cost advantages.…”

Section: Introductionmentioning

confidence: 99%

Fast and simple selenium speciation by solid phase extraction and laser-induced breakdown spectroscopy

et al. 2020

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The chemical properties including toxicity of selenium depend on the concentration and chemical structure present in the natural environment. Inorganic selenium is more toxic than organic selenium; thus, the accurate determination of inorganic selenium in various sample has been needed. HG-AAS, HPLC-ICP-MS, and GC-MS are the current methods for the determination of inorganic selenium. However, these methods have the disadvantage of expensive equipment, complicated sample preparation, and long analysis time. LIBS coupled with ion exchange membrane was used for the determination of inorganic selenium. The detection limit of inorganic selenium by the analytical method was 11.21 mg/kg, and the recoveries of 50 and 100 mg/kg Se(VI) were 98.5 % and 101.80 %, respectively. The speciation method is cost-effective, simple, and not labor intensive for the quantitation of inorganic selenium.

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“…Also, the performance can be remarkably improved by transforming liquid samples to solid ones. Various absorbing media and supporting solids have been used for this purpose [10][11][12][13]. However, the liquidto-solid sample transformation requires additional sample preparation works.…”

Section: Introductionmentioning

confidence: 99%

Laser-induced plasma generated by a 532 nm pulsed laser in bulk water: unexpected line-intensity variation with water temperature and the possible underlying physics

Kumar

Park

Nam

et al. 2020

Plasma Sci. Technol.

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The effect of the matrix temperature on laser-induced plasma generated in bulk water by using a 532 nm pulsed laser beam has been studied. Ca I and II emission line intensities were recorded for an aqueous solution of CaCl 2 in the temperature range of 7 °C-70 °C. The emission line intensities did not follow the matrix temperature in our experiments. Maximum intensities were observed at ∼18 °C for both lines. Herein, a possible mechanism responsible for the observed variation in intensity is suggested, in which laser-produced bubbles play important roles. Bubble formation is essential to ignite plasma in the liquid and more feasible at the higher liquid temperature. However, the abundant bubbles at the higher temperature can scatter the incident laser beam more effectively to decrease the energy delivered for the laser-induced plasma. Thus, these two roles have effects on the optical emission intensities in opposite ways. The validity of the suggested mechanism is discussed based on the plasma temperature, temperature dependence of the refractive index of water, plasma electron density, scattered light intensity, and plasma ignition threshold energy. Our result indicates that the temperature of the liquid is also an important parameter to be considered in the laser-induced breakdown spectroscopy analysis of bulk liquid samples and its application in deep-sea exploration.

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Feasibility of Separation and Quantification of Inorganic Arsenic Species Using Ion-Exchange Membranes and Laser-Induced Breakdown Spectroscopy

Cited by 11 publications

References 34 publications

Feasibility of quantitative inorganic arsenic speciation at the parts-per-trillion level using solid phase extraction and femtosecond laser ablation inductively coupled plasma mass spectrometry

Feasibility of quantitative inorganic arsenic speciation at the parts-per-trillion level using solid phase extraction and femtosecond laser ablation inductively coupled plasma mass spectrometry

Fast and simple selenium speciation by solid phase extraction and laser-induced breakdown spectroscopy

Laser-induced plasma generated by a 532 nm pulsed laser in bulk water: unexpected line-intensity variation with water temperature and the possible underlying physics

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