Level, Source, and Spatial Distribution of Potentially Toxic Elements in Agricultural Soil of Typical Mining Areas in Xiangjiang River Basin, Hunan Province

Yu, Yang; Luo, Huibo; He, Lihuan; Liu, Wenqing; Xu, Ruichen; Zhang, Linlin; Dong, Guihua; Wang, Yeyao; Wu, Guoping; Wei, Fusheng

doi:10.3390/ijerph17165793

Cited by 8 publications

(7 citation statements)

References 19 publications

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“…The Xiangjiang River is the largest river in Hunan Province, China, and it is the main water resource for domestic, industrial, and agricultural consumption in the province, which contains several large cities (Chai et al, 2017; Chen et al, 2018; Yu et al, 2020). However, widespread deforestation and severe soil erosion in recent decades have greatly reduced the capacity of the forests and soils in the Xiangjiang River basin to conserve water (Li & Xie, 2000; Luo et al, 2013); moreover, climate change has reshaped the temporal and spatial distribution of precipitation and ET (Zou et al, 2018; Wu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Stable isotopes of surface water and groundwater in a typical subtropical basin in south‐central China: Insights into the young water fraction and its seasonal origin

Xiao

Zhang

et al. 2022

Hydrological Processes

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The young water fraction (Fyw) can be reliably determined in heterogeneous river basins, and the seasonal origin index (SOI) can be used to determine the relative contributions of winter versus summer precipitation to runoff. Fywand SOI are also important descriptors of how a basin controls runoff generation and the transport of contaminants and nutrients. In this study, high‐frequency sampling of precipitation, river water, creek water, and shallow groundwater was conducted in the Xiangjiang River basin, in south‐central China, from January 2010 to December 2012. The samples were subjected to stable isotope measurements to determine the SOI and Fywof surface water and shallow groundwater. The principal findings are: (1) The δ2H variations of the river water, creek water, and shallow groundwater were driven by the input of precipitation but were attenuated during runoff confluence processes. Also, the low lc‐excess values of the river water indicated a strong evaporative effect. (2) 21.4% and 19.7% of the river water and shallow groundwater were younger than 1.5 and 1.7 months, respectively, indicating a quicker renewal cycle than for the creek water, which had a fraction of 8.0% younger than 2.6 months, which originated from the adjacent mountains. (3) Winter precipitation was more prevalent in the river water and creek water, indicating the substantial inter‐seasonal carryover of precipitation that supplied the runoff. The average SOI value of the shallow groundwater was near zero, indicating the mixing of the precipitation in different seasons that supplies the shallow groundwater. Our findings emphasize the importance of vegetation and soil conservation in maintaining the inter‐seasonal carryover of water storage held by soil, plants, and rock fractures, and the necessity to assess the risks of streamflow contamination because of the rapid renewal cycle of river water in this flat and intensively cultivated landscape.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Stable isotopes of surface water and groundwater in a typical subtropical basin in south‐central China: Insights into the young water fraction and its seasonal origin

Xiao

Zhang

et al. 2022

Hydrological Processes

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“…An example of such a basin is the Xiangjiang River basin in south‐central China, which is the subject of the present study. As one of the main tributaries of the Yangtze River, the Xiangjiang River is located within one of the most densely populated areas of Hunan Province, China, with the highest level of provincial urbanization and economic and agricultural development (Chai et al, 2017; Chen et al, 2018; Yu et al, 2020). The Xiangjiang River is an important source of drinking water, and water for irrigation, industry, entertainment, and other activities; Moreover, the quality and quantity of water sources in the basin directly affect the sources of both domestic water and agricultural irrigation water (Zhang et al, 2014; Zhong et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Identifying river water sources using end‐member mixing analysis in a subtropical monsoon basin China

Xiao

Shi

et al. 2023

Hydrological Processes

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Pressure on river water resources may increase continuously under global climate change and the increasing intensity of human activity, and the identification of river water sources is needed to maintain water resource sustainability. In this study, river water sources were studied using hydrochemical tracers (i.e. the major ions) and end‐member mixing analysis (EMMA) during two hydrological years, in the subtropical monsoon basin of the Xiangjiang River in the south‐central China. Various water types including precipitation, river water, and mountain creek water, were collected in the basin at a high frequency. The results of EMMA showed that the average contributions from the direct input of precipitation, near‐surface runoff (represented by mountain creek water), and groundwater (represented by river water sampled during the base flow period) were 28 ± 24%, 49 ± 24% and 23 ± 16%, respectively. The contributions from these water sources to the river water varied greatly within the year, which may indicate a shift in the major flow pathways from direct precipitation input and near‐surface flow pathways in the spring rainy months (e.g. from March to May), to a deeper flow pathway in the dry or rainless months (e.g. January, February, July and December). The shift of the major flow pathways may be due to the factors such as the seasonality of precipitation, evapotranspiration and soil wetness conditions. Groundwater and near‐subsurface runoff dominated the river water and the direct input of precipitation was negligible during the dry or rainless months, and consequently, the river water chemistry was less diluted and more influenced by water‐soil/rock interactions and anthropogenic pollution during these months. The creek water contribution to the river water was relatively high in summer, especially in June and July 2021, which may indicate the substantial inter‐seasonal carryover of precipitation that contributed to the river water. With the projected increased frequency of extreme weather events such as seasonal drought, streamflow in the subtropical monsoon regions may experience greater recharge by deeper flow pathways, with the enhanced role of base flow in regulating streamflow, and there may be an increased risk to the water resource security under the condition of the decreased river dilution capacity and increased anthropogenic pollution.

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“…Non-degradability of toxic metals within the soil presents a persistent challenge, rendering soil pollution a pervasive and global concern (Essien et al, 2019;Hu et al, 2017). Damage to ecosystems and human health may ensue when toxic metals leach into the soil and disrupt its natural functions and composition (Agbeshie et al, 2020;Yu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Ecological Risk Profiles of Heavy Metals and Polycyclic Aromatic Hydrocarbon in Soil Around Industries in Ilorin, Nigeria

Ogundele,

Iyanda,

Bello

et al. 2023

Preprint

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Ecological risk profiles of heavy metals and Polycyclic Aromatic Hydrocarbons were assessed in soil from selected occupational workplaces in Ilorin, Nigeria. Soil samples from nine (9) occupational workplaces, - automobile workshops, wood and furniture, and metal & steel industries sites were collected randomly, composited and digested. Cadmium, Copper, Chromium, Iron and Lead were analyzed using Atomic Absorption Spectrometer. The pollution status and ecological risk parameters were determined using standard models (Contamination Factor, Enrichment Factor, Geo-accumulation Index, Ecological Risk Factor and Potential Ecological Risk Index). For the determination of PAHs, soil samples were extracted using QUECHERS method. The cleaned extracts were analyzed for the presence of 16 EPA priority PAHs using Gas chromatography-mass spectrometer (GC-MS). The results showed that Iron concentration ranged between (4807.20 ± 23.15 mg/kg -12031. ± 40.25 mg/kg) in soil samples from the nine (9) selected study areas which were higher than the World Health Permissible limit of (445 mg/kg). The concentration range of the other heavy metals from the nine (9) selected study areas are, Cadmium (1.15 ± 0.40 mg/kg − 1.98 ± 0.46 mg/kg), chromium (15.0 ± 1.52 mg/kg − 142.30 ± 50.55 mg/kg), Copper (17.85 ± 4.60 mg/kg – 85.20 ± 13.80mg/kg) and Lead (5.8 ± 4.20mg/kg – 27.0 ± 10.24 mg/kg) accordingly. The standard models revealed the study area to be moderately contaminated with heavy metals. The GC-MS result revealed that (0.53%) anthracene was detected in Egbejila automobile workshop. Aliphatic chain compounds such as (Dibutylpthalate, Di-n-octylpthalate and Bis (2-ethyl hexylpthalate) which could be traced to plastic products and automobile upholstery were also detected.

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Level, Source, and Spatial Distribution of Potentially Toxic Elements in Agricultural Soil of Typical Mining Areas in Xiangjiang River Basin, Hunan Province

Cited by 8 publications

References 19 publications

Stable isotopes of surface water and groundwater in a typical subtropical basin in south‐central China: Insights into the young water fraction and its seasonal origin

Stable isotopes of surface water and groundwater in a typical subtropical basin in south‐central China: Insights into the young water fraction and its seasonal origin

Identifying river water sources using end‐member mixing analysis in a subtropical monsoon basin China

Ecological Risk Profiles of Heavy Metals and Polycyclic Aromatic Hydrocarbon in Soil Around Industries in Ilorin, Nigeria

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