Association between arsenic and different-sized dissolved organic matter in the groundwater of black-foot disease area, Taiwan

Chen, Ting Chien; Chen, Hsin-Yu; Jean, Jiin-Shuh; Chou, Mon Lin

doi:10.1016/j.chemosphere.2016.06.007

Cited by 29 publications

(8 citation statements)

References 44 publications

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“…Optical methods have been widely applied to analyze the chemical composition and structure of DOM and S-S [11,15,18,20,35,36,37,38]. In this study, UV-Vis indices SUVA 254 and spectral slope S 275-295 and fluorescence indices FI and BIX were used to examine the chemical structure and composition of P-W, L-W DOM and S-S.…”

Section: Resultsmentioning

confidence: 99%

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Fluorescence Characteristics of Dissolved Organic Matter (DOM) in Percolation Water and Lateral Seepage Affected by Soil Solution (S-S) in a Lysimeter Test

Chiu

Huang

Chen

et al. 2019

Sensors

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: The composition and structure of dissolved organic matter (DOM) are sensitive indicators that guide the water infiltration process in soil. The DOM chemical composition in seepage affects river water quality and changes soil organic matter (SOM). In this lysimeter test study, fluorescence spectra and optical indices were used to examine the interaction between the percolation water (P-W) and leachate water (L-W) DOMs affected by the soil solution (S-S). The L-W DOM had a higher aromaticity (SUVA254), average molecular weight (S275-295) and terrestrial source (fluorescence index (FI)), but fewer autochthonous sources (biological index (BIX)) than the P-W DOM. Organic carbon standardization (OCS) and protein- (PLF), fulvic- (FLF) and humic-like fluorescence (HLF) intensity showed that L-W DOM increased 44%, 55% and 81%, respectively, compared to the P-W DOM. The linear regression slopes between OCS FLF and PLF were 0.62, 1.74 and 1.79 for P-W, L-W and S-S, respectively. The slopes between OCS HLF and PLF were 0.15, 0.58 and 0.64 for P-W, L-W and S-S, respectively. The P-W DOM was in contact with the soil litter layer, where S-S labile lignin phenolic compounds released and dissolved into the L-W DOM. This increased its aromaticity, and extent of humification.

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Section: Resultsmentioning

confidence: 99%

“…FI provides an indicator for distinguishing DOM derived from terrestrial and microbial sources [20,36]. The low FI value (<1.4) had a strong terrestrial source contribution but the high FI value (>1.9) had a weak terrestrial source [31].…”

Section: Resultsmentioning

confidence: 99%

Fluorescence Characteristics of Dissolved Organic Matter (DOM) in Percolation Water and Lateral Seepage Affected by Soil Solution (S-S) in a Lysimeter Test

Chiu

Huang

Chen

et al. 2019

Sensors

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“…A large number of studies have shown that the causes of Blackfoot disease (e.g., China, Bangladesh, and West Bengal) are that patients consumed water (Brammer and Ravenscroft 2009;Smedley and Kinniburgh 2002) and plants (Brammer and Ravenscroft 2009;Das et al 2004) with As contamination for a long time, which led to a large amount of As accumulation in the body. The symptoms (e.g., toe ulceration, necrosis and exfoliation) of patients in the village of Daping are extremely similar to the symptoms of Blackfoot (Brammer and Ravenscroft 2009;Chen et al 2016;Sharma et al 2014).…”

Section: Relationship Between Arsenic and Endemic Diseasementioning

confidence: 84%

Potential relationships between exposure to arsenic (As) in the environment and endemic disease in southwestern China

Zhang

Chang

et al. 2021

Preprint

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There have been many reported cases of a strange disease exhibiting clinical features of limb gangrene, blisters, ulceration and exfoliation in Daping village, Yunnan Province in southwestern China. The prevalence rate of the disease is very high compared to other places in Yunnan Province and greater China. The pathogenesis is unknown and has bewildered doctors for many years. In this study, the content of As in soil (n=31) , water (n=55) , and plants (n=7) were systematically measured. The results show a high As concentration in plants and soil samples from the area, and the source of As linked to the weathering of black shale strata. We assessed the risks of human exposure to As through six possible exposure pathways. Ingestion of soil and plants are found to be the two main ways that children and adults are exposed to As, and children have a higher health risk than adults. Our study sheds new light on the environmental geochemistry and health links of this disease.

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“…Concentrations of common free ions were determined by ion chromatography (IC) (DX600, Dionex Co., America) . Concentrations of Fe tot and Mn tot in particles and colloids were also measured by inductively coupled plasma mass spectrometry (ICP-MS) (Agilent Technologies Inc., California, U.S.A.) after digestion. , In addition to ion concentrations, the amount of total organic carbon (TOC) in each of the four subsamples was measured with a TOC analyzer (TNM-L ROHS, Shimadzu Corporation, Japan) to determine the distribution of organic matter in natural water, and the types of organic matter present were determined by three-dimensional (3D) fluorescence (F4600, Hitachi Ltd., Japan). , A field emission scanning electron microscope (FE-SEM, SU-8020, Hitachi, Japan) coupled with the energy dispersive spectrometer (EDS) module was used to obtain the SEM image and EDS spectrum. Apart from the physical and chemical properties mentioned above, we measured the concentration of suspended particulate matter (SPM, <0.45 μm) in UWs.…”

Section: Methodsmentioning

confidence: 99%

Influences of Particles and Aquatic Colloids on the Oxidation of Sb(III) in Natural Water

Wang

Kong

et al. 2020

ACS Earth Space Chem.

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Antimony (Sb) is a hazardous metalloid that is ubiquitous in the environment. Its toxicity and mobility are strongly influenced by the valence state. Particles and aquatic colloids are abundant in natural water; however, there is little understanding of how Sb(III) is oxidized by these substances. In this study, cross-flow ultrafiltration is used to separate the substances in natural water samples into macroparticles (>1 μm), microparticles (1–0.1 μm), colloids (<0.1 μm, >1 kDa), and dissolved substances (<1 kDa). The effects of these different components on oxidation of Sb(III) were comprehensively investigated by kinetic measurements with the aid of quenchers under simulated sunlight irradiation and dark conditions. The results show that 95% of the Sb(III) oxidation process was done by the particles (macroparticles and microparticles) and aquatic colloids (colloids and dissolved substances). Macroparticles oxidized Sb(III) via active substances such as natural organic matter (NOM) and iron oxides, while colloids impacted the oxidation process via dissolved organic matter (DOM) with active groups such as amino acid-like organic matter. The dissolved substances oxidized Sb(III) via iron ions and some micromolecule organic matter. Common free ions in natural water had no effect on the oxidation of Sb(III). The reactive oxygen species (ROS) and excited triplet states of DOM (3DOM*) produced by oxidants under photoirradiation can accelerate the oxidation of Sb(III). These results indicate that Sb(III) can be oxidized to Sb(V) rapidly with the help of sunlight in the presence of particles and colloids, and this oxidation process will greatly influence the fate of Sb(III) in natural water.

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Association between arsenic and different-sized dissolved organic matter in the groundwater of black-foot disease area, Taiwan

Cited by 29 publications

References 44 publications

Fluorescence Characteristics of Dissolved Organic Matter (DOM) in Percolation Water and Lateral Seepage Affected by Soil Solution (S-S) in a Lysimeter Test

Fluorescence Characteristics of Dissolved Organic Matter (DOM) in Percolation Water and Lateral Seepage Affected by Soil Solution (S-S) in a Lysimeter Test

Potential relationships between exposure to arsenic (As) in the environment and endemic disease in southwestern China

Influences of Particles and Aquatic Colloids on the Oxidation of Sb(III) in Natural Water

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