Groundwater Arsenic and Fluoride and Associated Arsenicosis and Fluorosis in China: Occurrence, Distribution and Management

He, Xiaodong; Li, Peiyue; Ji, Yujie; Wang, Yuanhang; Su, Zhenmin; Elumalai, Vetrimurugan

doi:10.1007/s12403-020-00347-8

Cited by 212 publications

(61 citation statements)

References 60 publications

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“…For example, many studies have shown that high levels of fluoride, nitrate, metals, and persistent organic pollutants are a health risk for human populations (Wu et al 2020 ). This is especially critical for infants and children who are more susceptible to the effects of these contaminants than adults (He et al 2020b ; Wu and Sun 2016 ; Karunanidhi et al 2020 ; Mthembu et al 2020 ; Ji et al 2020 ; Subba Rao et al 2020 ; Zhou et al 2020 ). For example, “blue baby syndrome,” also known as infant methemoglobinemia, is caused by excessive nitrate concentrations in the drinking water used to make baby formulas.…”

Section: Consequences Of Groundwater Contaminationmentioning

confidence: 99%

Sources and Consequences of Groundwater Contamination

Karunanidhi²,

Subramani

et al. 2021

Arch Environ Contam Toxicol

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357

104

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Section: Consequences Of Groundwater Contaminationmentioning

confidence: 99%

Sources and Consequences of Groundwater Contamination

Karunanidhi²,

Subramani

et al. 2021

Arch Environ Contam Toxicol

Self Cite

357

104

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“…These factors include climatic conditions, rain and surficial water percolation, recharge water quality, regional geology, sub-surficial geochemical processes, as well as discharges, leaching and organic matter addition from anthropogenic activities carried out over the aquifer, extraction and irrigation practices [11,16,[23][24][25]40].…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

“…In terms of drinking water standards, 32% of deep groundwater samples and 89% of shallow groundwater exceed the highest permissible limits of 1500 and 1200 mg/L as prescribed by both [36,39], respectively, and are thus not acceptable for drinking. Based on FAO guidelines for irrigation use, only 35.5% (11) of the samples are permissible for irrigation, whereas 22.5% (7) are borderline and the remaining 42% (13) are not to be used for irrigation.…”

Section: Chemical Composition Of Groundwatermentioning

confidence: 99%

Hydrogeochemical characteristics and evaluation of groundwater quality for domestic and irrigation purposes: a case study of the Heuningnes Catchment, Western Cape Province, South Africa

Mokoena

Donker

2020

SN Appl. Sci.

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Knowing the quality of water is imperative if the water is meant for drinking or agricultural purposes. The spatial and temporal groundwater quality in the Heuningnes Catchment was investigated, and its appropriateness for irrigation and drinking purposes was considered. Thirty-one samples were collected and analysed for physical (pH, EC, TDS) and chemical (Na + , K + , Ca 2+ , Mg 2+ , HCO 3 − , Cl − , SO 4 2−) parameters. Maps demonstrating the spatial and temporal distribution of groundwater quality were constructed using Geographical Information System software. These maps indicate variations in the concentration of various water quality parameters in the region. Groundwater in the region is mostly alkaline and is categorised as either fresh, brackish or saline based on TDS classification. Using Piper diagrams, it is shown that Na +-Cl − water type is the main water type in the area. The quality is mostly influenced by chemical weathering of rockforming minerals. Over 50% of groundwater in the region is not fit for drinking purposes as established from WHO (2011) and SANS241 criteria. Following SAR criteria, looking at Na%, PI, MH, KR and salinity hazard for irrigation assessment, it was discovered that shallow groundwater in the region was not fit for irrigation purposes. However, groundwater from deeper boreholes proved otherwise. The study has shown that not all-available groundwater is suitable for either drinking or irrigation. Therefore, it recommends to plant crop varieties that are highly salinity tolerant, as treating the water prior to irrigation would not be economically viable, and it also recommends further exploration to make the available 50% of groundwater drinkable and to make the shallow groundwater fit for irrigation.

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“…However, long-term exposure to environments containing high-level fluoride will cause fluorosis (Zhang et al, 2017 ). Therefore, the concentration of fluoride in drinking water should be carefully monitored: a F − concentration lower than 0.5 mg/L may lead to dental decay (Yuan et al, 2020 ); a high F − concentration is linked with dental fluorosis (1.5–4.0 mg/L; Rwenyonyi et al, 1999 ) and skeletal fluorosis (>4 mg/L; He et al, 2020 ). Fluoride is toxic to microorganisms because it inhibits their phosphoryl-transfer enzymes (Breaker, 2012 ).…”

Section: Introductionmentioning

confidence: 99%

Transmembrane Fluoride Transport by a Cyclic Azapeptide With Two β-Turns

Zhao¹,

Zhang²,

Tang³

et al. 2021

Front. Chem.

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Diverse classes of anion transporters have been developed, most of which focus on the transmembrane chloride transport due to its significance in living systems. Fluoride transport has, to some extent, been overlooked despite the importance of fluoride channels in bacterial survival. Here, we report the design and synthesis of a cyclic azapeptide (a peptide-based N-amidothiourea, 1), as a transporter for fluoride transportation through a confined cavity that encapsulates fluoride, together with acyclic control compounds, the analogs 2 and 3. Cyclic receptor 1 exhibits more stable β-turn structures than the control compounds 2 and 3 and affords a confined cavity containing multiple inner –NH protons that serve as hydrogen bond donors to bind anions. It is noteworthy that the cyclic receptor 1 shows the capacity to selectively transport fluoride across a lipid bilayer on the basis of the osmotic and fluoride ion-selective electrode (ISE) assays, during which an electrogenic anion transport mechanism is found operative, whereas no transmembrane transport activity was found with 2 and 3, despite the fact that 2 and 3 are also able to bind fluoride via the thiourea moieties. These results demonstrate that the encapsulation of an anionic guest within a cyclic host compound is key to enhancing the anion transport activity and selectivity.

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Groundwater Arsenic and Fluoride and Associated Arsenicosis and Fluorosis in China: Occurrence, Distribution and Management

Cited by 212 publications

References 60 publications

Sources and Consequences of Groundwater Contamination

Sources and Consequences of Groundwater Contamination

Hydrogeochemical characteristics and evaluation of groundwater quality for domestic and irrigation purposes: a case study of the Heuningnes Catchment, Western Cape Province, South Africa

Transmembrane Fluoride Transport by a Cyclic Azapeptide With Two β-Turns

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