Reference values for four arsenic species (inorganic As(III); inorganic As(V); dimethylarsinic acid DMA; monomethylarsonic acid MMA) in urine were evaluated for 101 male persons in northern Germany (46.9 +/- 10.5 y) applying anion exchange chromatographic species separation with on-line hydride-technique atomic absorption spectrometry (between-days imprecision 6.8-10.1%; 11.0-50.0 micrograms/l; n = 30; detection limits d. l. 1; 10; 2; 2 micrograms/l). DMA was found in 88.1% of the persons (x +/- s = 7.21 +/- 9.64 micrograms/g creatinine; median 4.02 micrograms/g; 95% < 22.5 micrograms/g) followed by As(III) (11.3%; median < d. l.; 95% < 0.54 microgram/g) whereas no MMA and As(V) could be found. Seafood consumption within the last 2 days led to higher DMA levels compared to having seafood more than 6 days ago (n = 43 vs. n = 42; 10.04 +/- 11.58 vs. 3.47 +/- 3.55 micrograms/g; p < 0.01).
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http://dx.doi.org/10.1078/1438-4639-00060 | DOI Listing |
Environ Pollut
January 2025
Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.
Migration characteristics and occurrence forms of redox-sensitive metal(loid)s such as arsenic (As), chromium (Cr), and vanadium (V) remained unclear in dynamic estuarine waters. In this work, size fractionation and chemical speciation of As, Cr, and V in the Jiaomen Waterway (JMW), a tidal river of the Pearl River estuary, were explored based on (ultra)filtration, the diffusive gradients in thin films (DGT) techniques and a thermodynamic chemical equilibrium model. The results showed that As was present mainly in soluble forms in the river water, and the suspended particulate matter (SPM) was identified the major carrier for Cr.
View Article and Find Full Text PDFMaterials (Basel)
January 2025
Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 040 01 Košice, Slovakia.
In Slovakia, there are a number of contaminated sites that have occurred due to intensive mining, mineral processing, metallurgical activities, chemical industry, fossil fuel combustion, and industrial agriculture in the past. This paper summarizes the occurrence, chemistry, toxicity, and mineralogy of arsenic species related to soil and water contamination in Slovakia. Four main localities with arsenic exposure were identified.
View Article and Find Full Text PDFAnal Bioanal Chem
January 2025
Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, 94700, Maisons-Alfort, France.
This study presents the development and validation of a precise analytical method for the speciation analysis of arsenic (As) compounds, including inorganic species [As(III) and As(V)] and organic species such as monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA). The method employs anion-exchange high-performance liquid chromatography (AE HPLC) coupled with inductively coupled plasma-mass spectrometry (ICP-MS). To optimize the sample preparation process, microwave-assisted extraction (MAE) and heat-assisted extraction (HAE) techniques were evaluated and compared.
View Article and Find Full Text PDFJ Environ Sci (China)
July 2025
School of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China; Jiangsu Province Ecology and Environment Protection Key Laboratory of Ecology and Pollution Control of Coastal Wetlands, Yancheng 224051, China.
Arsenic (As) pollution in coastal wetlands has been receiving growing attention. However, the exact mechanism of As mobility driven by tidal action is still not completely understood. The results reveal that lower total As concentrations in solution were observed in the flood-ebb treatment (FE), with the highest concentration being 7.
View Article and Find Full Text PDFJ Environ Sci (China)
July 2025
Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. Electronic address:
In sulfidic anoxic environments, iron sulfides are widespread solid phases that play an important role in the arsenic (As) biogeochemical cycle. This work investigated the transformation process of FeS-As coprecipitates, the concurrent behavior, and the speciation of associated As under anoxic conditions. The results showed that FeS-As coprecipitates could convert to greigite and pyrite.
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