Arsenic species extraction of biological marine samples (Periwinkles, Littorina littorea) from a highly contaminated site

Whaley-Martin, Kelly; Koch, Iris; Reimer, Kenneth J.

doi:10.1016/j.talanta.2011.10.030

Cited by 34 publications

(20 citation statements)

References 31 publications

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“…27 Step 2 consisted of heating the residues with 5 mL of 2% HNO 3 for 2 h at 70°C, placing in an ultrasonic bath for 30 min, and centrifuging at 3500 rpm for 30 min at 15°C. The supernatant was decanted and syringe filtered and stored as before.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Arsenic Speciation in Edible Mushrooms

Nearing

Koch

Reimer

2014

Environ. Sci. Technol.

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The fruiting bodies, or mushrooms, of terrestrial fungi have been found to contain a high proportion of the nontoxic arsenic compound arsenobetaine (AB), but data gaps include a limited phylogenetic diversity of the fungi for which arsenic speciation is available, a focus on mushrooms with higher total arsenic concentrations, and the unknown formation and role of AB in mushrooms. To address these, the mushrooms of 46 different fungus species (73 samples) over a diverse range of phylogenetic groups were collected from Canadian grocery stores and background and arsenic-contaminated areas. Total arsenic was determined using ICP-MS, and arsenic speciation was determined using HPLC-ICP-MS and complementary X-ray absorption spectroscopy (XAS). The major arsenic compounds in mushrooms were found to be similar among phylogenetic groups, and AB was found to be the major compound in the Lycoperdaceae and Agaricaceae families but generally absent in log-growing mushrooms, suggesting the microbial community may influence arsenic speciation in mushrooms. The high proportion of AB in mushrooms with puffball or gilled morphologies may suggest that AB acts as an osmolyte in certain mushrooms to help maintain fruiting body structure. The presence of an As(III)-sulfur compound, for the first time in mushrooms, was identified in the XAS analysis. Except for Agaricus sp. (with predominantly AB), inorganic arsenic predominated in most of the store-bought mushrooms (albeit with low total arsenic concentrations). Should inorganic arsenic predominate in these mushrooms from contaminated areas, the risk to consumers under these circumstances should be considered.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Arsenic Speciation in Edible Mushrooms

Nearing

Koch

Reimer

2014

Environ. Sci. Technol.

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“…Various methods are applied to realize this purpose. Among them, the most often utilized hyphenated technique is high performance liquid chromatography inductively coupled plasma mass spectrometry (HPLC/ICP-MS) [12,15,16,17]; some authors have used other detection techniques, such as inductively coupled plasma optical emission spectrometry (ICP-OES), hydride generation atomic absorption spectrometry (HG-AAS), hydride generation atomic fluorescence spectrometry (HG-AFS), or electrothermal atomic absorption spectrometry (ET-AAS) [4,18,19]. In order to minimize spectral interferences hampering arsenic determination, the dynamic reaction cell (DRC) is often used in ICP-MS instruments [20,21].…”

Section: Introductionmentioning

confidence: 99%

Total Arsenic and Arsenic Species Determination in Freshwater Fish by ICP-DRC-MS and HPLC/ICP-DRC-MS Techniques

2019

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Analytical methods for the determination of total arsenic (TAs) and arsenic species (arsenite—As(III), arsenate—As(V), monomethylarsenic acid—MMA, dimethylarsenic acid—DMA and arsenobetaine—AsB) in freshwater fish samples were developed. Inductively coupled plasma mass spectrometry with dynamic reaction cell (ICP-DRC-MS) and high-performance liquid chromatography hyphenated to ICP-DRC-MS were used for TAs and arsenic species determination, respectively. The DRC with oxygen as a reaction gas was used. Sample preparation, digestion, and extraction were optimized. Microwave assisted digestion and extraction provided good recovery and extraction efficiency. Arsenic species were fully separated in 8 min using 10 mmol L−1 of ammonium dihydrogen phosphate and 10 mmol L−1 of ammonium nitrate. Overlapping of AsB and As(III) of arsenic species in the presence of a high concentration of AsB and trace amounts of As(III) were studied. Detailed validation of analytical procedures proved the reliability of analytical measurements. Both procedures were characterized by short-term and long-term precision: 2.2% (TAs) up to 4.2% (AsB), and 3.6% (TAs) up to 7.2% (DMA), respectively. Limits of detection (LD) were in the range from 0.056 µg L−1 for TAs to 0.15 µg L−1 for As(V). Obtained recoveries were in the range of 85%–116%. Developed methods were applied to freshwater fish samples analysis.

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“…Extensive research has been carried out on the speciation of arsenic in seafood [18][19][20][21][22][23][24] for the need to differentiate toxic arsenic species (e.g., inorganic arsenicals) from those of high concentration but little toxicity (e.g., arsenobetaine). Recently, there has been much attention paid to the determination of arsenic in rice and chicken because of the relatively high concentrations of arsenic in these food items [25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the highly sensitive methods for arsenic speciation have used high performance liquid chromatography (HPLC) separation with detection of atomic fluorescence, inductively coupled plasma mass spectrometry (ICPMS), and electrospray ionization mass spectrometry (ESIMS) [21,22,[38][39][40][41][42][43][44]. For solid samples, such as chicken meat, arsenic species must be extracted into solution amenable for HPLC analysis.…”

Section: Introductionmentioning

confidence: 99%