Enrichment mechanism of fluoride and iodine in saline groundwater in the lower flood plain of the Yellow River, northern China

Zhi, Chuanshun; Hu, Bill X.; Chang, Wenbo; Wu, Guangwei; Dong, Yulong; Wang, Qingbing

doi:10.1016/j.jhydrol.2023.129529

Cited by 15 publications

(4 citation statements)

References 57 publications

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“…The coastal area of Tianjin is characterized by a high concentration of total dissolved solids (TDS), and the correlation between groundwater TDS and iodine enrichment has been shown to be different in previous studies; for example, the correlation between groundwater TDS and iodine enrichment was not obvious in the Yellow River Basin (Zhi et al, 2023), and a positive correlation between groundwater TDS and iodine enrichment was observed in the Datong Basin of Xinjiang and Shanxi(Hai-ling, 2018; Hong-tai et al, 2019; Ying, 2022). The study area is characterized by a lack of water sources; although the Southto-North Water Diversion has solved part of the water supply problem in recent years, many reservoirs are still used as backup water sources.…”

Section: Introductionmentioning

confidence: 93%

“…Iodine transport and enrichment in groundwater is in uenced by many factors. The form of iodine determines the e ciency of iodine transport and enrichment (Li et al, 2017a;Li et al, 2014;Li et al, 2020;Li et al, 2022); in general, there are three main forms of iodide in groundwater: iodide (I − ), iodate (IO3-) and organic iodine (Zhi et al, 2023). Among them, iodide is the most active form, has the greatest mobility, and is the most important form to promote iodine transport and enrichment (Li et al, 2017a;Xu et al, 2015;Zhaohua, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…The redox environment is one of the most important factors in uencing iodine morphology and iodine transport and enrichment, and the main forms of iodine are different under different redox environments. Under an oxidizing environment, iodine is mainly in the form of iodate (Li et al, 2020;Zhi et al, 2023); under a reducing environment, iodine is mainly in the form of iodide (Li et al, 2014). This suggests that the reduced groundwater environment is favorable for iodine transport and enrichment (Li et al, 2017a;Li et al, 2013;Li et al, 2017b;Zhang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Source and transport enrichment mechanism of iodine in shallow saline groundwater in Tianjin coastal area

Xie,

Li,

et al. 2024

Preprint

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Iodine is one of the essential trace elements in the human body, and excessive or insufficient intake will affect human health. To ensure the safety of drinking water resources, the spatial distribution of iodine content and migration enrichment factors in shallow underground salty water in Tianjin coastal area were studied. The results show that the iodide content of shallow groundwater ranges from ND to 1320 μg/L, and high iodine groundwater (100-300 μg/L) and ultra-high iodine groundwater (>300 μg/L) account for 37.5%, distributed in the east, west, central and south of the study area; iodine-deficient groundwater (＜25 μg/L) accounts for 10%, and iodine-suitable groundwater (25-100 μg/L) accounts for 15%. From north to south and from northwest to southeast, the shallow groundwater in the study area changed from freshwater and brackish water to saline and salt water; the I- concentrations in freshwater, brackish water, and saltwater were significantly different, and the I- concentrations tended to increase with the increase of TDS concentration; the main hydrochemical types in this direction changed from HCO3·Ca-Na→Cl·SO4-Na·Mg→HCO3·Cl-Na·Ca→Cl·HCO3-Na→Cl-Na type shift; high iodine and ultra-high iodine groundwater chemistry types are mainly Cl-Na types, Cl·HCO3-Na type and HCO3-Ca·Na type. The main source of iodine in groundwater is marine sediments, and its enrichment mechanism is as follows: stronger reducing environment and groundwater flow promote the dissolution of carbonates containing Ca2+, HCO3-, SO42- and sulfate minerals, such as gypsum and manganese nitrate; sedimentary iodine is released in the process of dissolution of marine sediments and reduced to I-; I- migrates with the flow of groundwater; in the eastern part of the study area, the poor permeability of the In the eastern part of the study area, mucky clay is the main soil structure, and groundwater flow is blocked, so I- is enriched here, and the concentration increases under strong evaporation and concentration.

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Section: Introductionmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Source and transport enrichment mechanism of iodine in shallow saline groundwater in Tianjin coastal area

Xie,

Li,

et al. 2024

Preprint

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“…Results indicated that Human inputs/impacts are the dominant forces increasing the nitrate content and salinity of groundwater in the Piedmont region and the residential and industrial lower reaches of the Southeast, posing potential non-carcinogenic risks to various populations through the oral route. Zhi et al 19 studied the Enrichment mechanism of fluoride and iodine in saline groundwater in the lower flood plain of the Yellow River, northern China. The results of the factor analysis further confirm the opposite behavior patterns of fluoride and iodine in saline groundwater.…”

Section: Introductionmentioning

confidence: 99%

Simulation of nitrate pollution and vulnerability of groundwater resources using MODFLOW and DRASTIC models

Eslamian,

Harooni,

Sabzevari

2023

Sci Rep

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Groundwater assets are the foremost imperative assets of freshwater accessible to people especially in arid and semi-arid regions. For the investigation of temporal changes in groundwater nitrate pollution and the role of agriculture and other sources in the pollution of groundwater, the information on 42 drinking water wells with suitable distribution in the plain in Bouin-Daran Plain in the center of Iran was used. The results showed that the amount of hydraulic conductivity in the plain for different areas after calibration in steady state was calculated between 0.8 and 34 m/day. After calibrating the model in permanent conditions, the model was calibrated in non-permanent conditions for 2 years. The results showed that in a wide area of the region, the nitrate ion concentration has values of more than 25 mg/L. This shows that the average concentration of this ion in the region is generally high. The highest level of pollution in the aquifer of the plain is related to the southern and southeastern parts of the plain. Due to the agricultural activities with the use of large amounts of fertilizers in this plain, there is a potential for pollution in all of the places, and it requires codified and executive planning for agricultural operations as well as the use of groundwater sources. The DRASTIC vulnerability estimation method is only useful for estimating the areas that have a high potential for contamination and according to the validation tests, it has also provided a suitable estimate.

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Identifying the hydrochemical features, driving factors, and associated human health risks of high-fluoride groundwater in a typical Yellow River floodplain, North China

Chen,

Wang,

Zhang

et al. 2023

Environ Geochem Health

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Enrichment mechanism of fluoride and iodine in saline groundwater in the lower flood plain of the Yellow River, northern China

Cited by 15 publications

References 57 publications

Source and transport enrichment mechanism of iodine in shallow saline groundwater in Tianjin coastal area

Source and transport enrichment mechanism of iodine in shallow saline groundwater in Tianjin coastal area

Simulation of nitrate pollution and vulnerability of groundwater resources using MODFLOW and DRASTIC models

Identifying the hydrochemical features, driving factors, and associated human health risks of high-fluoride groundwater in a typical Yellow River floodplain, North China

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