Speciation of mercury in water and freshwater fish samples using two-step hollow fiber liquid phase microextraction with electrothermal atomic absorption spectrometry

Thongsaw, Arnon; Sananmuang, Ratana; Udnan, Yuthapong; Ross, Gareth; Chaiyasith, Wipharat Chuachuad

doi:10.1016/j.sab.2018.12.012

Cited by 40 publications

(9 citation statements)

References 33 publications

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“…Effect of the sodium diethyldithiocarbamate concentration DDTC was selected as the chelating agent because of its strong chelating ability to form nearly water-insoluble metal salts with all metal ions except alkali and alkaline earth metals [35]. DDTC is poorly water soluble and methanol is required to form a DDTC solution.…”

Section: 12mentioning

confidence: 99%

Ultrasound‐assisted dual‐cloud point extraction with high‐performance liquid chromatography‐hydride generation atomic fluorescence spectrometry for mercury speciation analysis in environmental water and soil samples

Xie

Hao

Jiang

et al. 2021

J of Separation Science

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A method for simultaneous preconcentration and determination of mercury species in water and soil samples was established using high-performance liquid chromatography with hydride generation atomic fluorescence spectrometry after ultrasound-assisted dual-cloud point extraction. The extraction process was divided into two steps. In the first cloud point extraction, inorganic mercury and methylmercury formed chelates with sodium diethyldithiocarbamate and were extracted into Triton X-114 micelles. In the second stage, a displacement reaction between sodium diethyldithiocarbamate-inorganic mercury/methylmercury and l-cysteine occurred, and the analytes entered the l-cysteine aqueous solution under ultrasonication. This aqueous solution was directly introduced to the high-performance liquid chromatography with hydride generation atomic fluorescence spectrometry and the detection was completed within 6 min. Under the optimum experimental conditions, the linear range was 0.10-5.0 μg/L (r ≥0.9993) for inorganic mercury and methylmercury, and the enhancement factors were 15.7 for inorganic mercury and 6.35 for methylmercury. The limits of detection for inorganic mercury and methylmercury were 0.004 and 0.016 μg/L, respectively. The approach was successfully applied to the determination of trace inorganic mercury and methylmercury in water and soil samples with good recoveries (85.3-110%). This method solved the problem of peak fusion of the two analytes and was successfully applied to the speciation analysis of mercury.

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Section: 12mentioning

confidence: 99%

Ultrasound‐assisted dual‐cloud point extraction with high‐performance liquid chromatography‐hydride generation atomic fluorescence spectrometry for mercury speciation analysis in environmental water and soil samples

Xie

Hao

Jiang

et al. 2021

J of Separation Science

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“…Thus, new extraction phases such as ionic liquids and deep eutectic solvents are implemented in HF-LPME, and three-phase systems are reported with polar organic solvent as an acceptor phase . Recent research also report on HF-LPME in combination with voltammetry, electrothermal atomic absorption spectrometry, and paper-based colorimetric detection for determination of vanillylmandelic acid, mercury, and chromium, respectively. Progress has also been reported in terms of automation and on implementation in microchip systems …”

Section: Liquid-phase Microextractionmentioning

confidence: 99%

Emerging Extraction Strategies in Analytical Chemistry

Hansen

Pedersen‐Bjergaard

2019

Anal. Chem.

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“…Organomercury displaying more toxic than inorganic ones, have gained considerable attention because of their lipophilicity and bioaccumulation characters. 2 The common mercury species found in water are inorganic mercury (Hg 2+ ), alkylmercury (methylmercury (MeHg) and ethylmercury (EtHg)), and phenylmercury (PhHg) (Fig 1). These mercury species in water particularly attract great concerns because they may transport to soil, plant, fish, and finally to human through food chain.…”

Section: Introductionmentioning

confidence: 99%

Sensitive Mercury Speciation Analysis in Water by High-Performance Liquid Chromatography-Atomic Fluorescence Spectrometry Coupling with Solid-Phase Extraction

Chen

Zhang

et al. 2021

ANAL. SCI.

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An efficient method based on high performance liquid chromatography coupled with atomic fluorescence spectrometry (HPLC-AFS) was successfully developed for the simultaneous determination of four mercury species including Hg 2+ , methylmercury (MeHg), ethylmercury (EtHg), and phenylmercury (PhHg) in water. Samples were enriched and cleaned up with solid phase extraction (SPE) pretreatment using thiol cartridge, some key parameters including selection of SPE cartridge, eluent type, eluent volume, and the interference factors were systematically investigated. The chromatographic separation was achieved on C 18 column using a mobile phase consisting of methanol and 60 mmol L -1 ammonium acetate with 10 mmol L -1 L-cysteine by gradient elution. Under the optimized conditions, good linearity (r ≥ 0.9991) was observed between 0.20 μg L -1 to 10.

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Speciation of mercury in water and freshwater fish samples using two-step hollow fiber liquid phase microextraction with electrothermal atomic absorption spectrometry

Cited by 40 publications

References 33 publications

Ultrasound‐assisted dual‐cloud point extraction with high‐performance liquid chromatography‐hydride generation atomic fluorescence spectrometry for mercury speciation analysis in environmental water and soil samples

Ultrasound‐assisted dual‐cloud point extraction with high‐performance liquid chromatography‐hydride generation atomic fluorescence spectrometry for mercury speciation analysis in environmental water and soil samples

Emerging Extraction Strategies in Analytical Chemistry

Sensitive Mercury Speciation Analysis in Water by High-Performance Liquid Chromatography-Atomic Fluorescence Spectrometry Coupling with Solid-Phase Extraction

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