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He M, Ren J, Liu J, Liu S, Zhang G, Song G. Distribution, seasonal variation and influencing factors of total dissolved inorganic arsenic in the middle and lower reaches of the Yellow River. MARINE POLLUTION BULLETIN 2024; 202:116337. [PMID: 38615519 DOI: 10.1016/j.marpolbul.2024.116337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 02/26/2024] [Accepted: 04/02/2024] [Indexed: 04/16/2024]
Abstract
The concentrations of dissolved arsenate in natural water has an important impact on human health. The distributions, seasonal variation and major influencing factors of total dissolved inorganic arsenic (TDIAs) were studied in the Yellow River. The concentrations of TDIAs in the middle and lower reaches of the Yellow River ranged from 4.3 to 42.4 nmol/L, which met the standards for drinking water of WHO. The seasonal variation of TDIAs concentration in the middle and lower reaches of the Yellow River was highest in summer, followed by autumn and winter, and lowest in spring. The influencing factors of TDIAs concentration in the middle and lower reaches of the Yellow River mainly include the hydrological conditions, topographical variation, the adsorption and desorption of suspended particulate matter (SPM) and the intervention of human activities. The absorption of TDIAs by phytoplankton in the Xiaolangdi Reservoir (XLD) is an important factor affecting its distributions and seasonal variation. The annual flux of TDIAs transported from the Yellow River into the Bohai Sea ranged from 1.1 × 105 to 4.5 × 105 mol from 2016 to 2018, which is lower than the flux in 1985 and 2009. The carcinogenic risks (CR) of TDIAs for children and adults were all within acceptable levels (<10-6).
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Affiliation(s)
- Mengyao He
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology, Qingdao 266237, China
| | - Jingling Ren
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology, Qingdao 266237, China.
| | - Jiaqi Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China
| | - Sumei Liu
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology, Qingdao 266237, China
| | - Guiling Zhang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology, Qingdao 266237, China
| | - Guodong Song
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, China; Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology, Qingdao 266237, China
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Feng Y, Dong S, Ma M, Hou Q, Zhao Z, Zhang W. The influence mechanism of hydrogeochemical environment and sulfur and nitrogen cycle on arsenic enrichment in groundwater: A case study of Hasuhai basin, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 858:160013. [PMID: 36368403 DOI: 10.1016/j.scitotenv.2022.160013] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
Hydro-biogeochemical processes control the formation and evolution of high arsenic (As) groundwater. However, the effects of nitrogen and sulfur cycles in groundwater on As migration and transformation are not well understood. Thus, twenty-one groundwater samples were collected from the Hasuhai basin. Hydrochemistry and geochemical modeling were used to analyze the geochemical processes associated with nitrogen and sulfur cycles. An arsenic speciation model (AM) and a sulfide-As model (SAM) were constructed to verify the existence of As species and the formation mechanism of thioarsenate. A hydrous ferric oxide (Hfo)-As adsorption model (HAM) and a competitive adsorption model (CAM) were used to reveal the adsorption and desorption mechanisms of As. The results showed that high arsenic groundwater (As > 10 μg/L) was mainly distributed under reductive conditions, and the highest concentration was 231.5 μg/L. The modeling results revealed that sulfides were widely involved in the geochemical cycle of As, with H3AsO3 and H2AsO3- accounting for >70 % of the total As, and thioarsenate accounting for 30 %. S/As < 2.5 and S/Fe < l control the formation of thioarsenate. With the high correlation of NH4+, TFe, sulfide, and TAs, the co-mobilization of N and S cycles may facilitate As enrichment in groundwater. A weak alkaline reduction environment triggered by the decomposition of organic matter was the main factor leading to the transfer of As from the aquifer to the groundwater. This research contributes to the development of high-As groundwater, and the findings are of general significance for drinking water in the Hasuhai Basin.
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Affiliation(s)
- Yanbo Feng
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China; Inner Mongolia Key Laboratory of River and Lake Ecology, Hohhot 010021, Inner Mongolia, China
| | - Shaogang Dong
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China; Inner Mongolia Key Laboratory of River and Lake Ecology, Hohhot 010021, Inner Mongolia, China.
| | - Mingyan Ma
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China
| | - Qingqiu Hou
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China; School of Environmental Studies, China University of Geosciences, Wuhan 430074, Hubei, China
| | - Zhen Zhao
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China
| | - Wenqi Zhang
- School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, Inner Mongolia, China
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Li Z, Cao W, Ren Y, Pan D, Wang S, Zhi C. Enrichment mechanisms for the co-occurrence of arsenic-fluoride-iodine in the groundwater in different sedimentary environments of the Hetao Basin, China. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 839:156184. [PMID: 35623526 DOI: 10.1016/j.scitotenv.2022.156184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 05/08/2022] [Accepted: 05/19/2022] [Indexed: 06/15/2023]
Abstract
Abnormal levels of co-occurring arsenic (As), fluoride (F-) and iodine (I) in groundwater at the Hetao Basin are geochemically unique. The abnormal distribution of As, F- and I is obviously related to the sedimentary environment. It is necessary to study the enrichment mechanisms for the co-occurrence of As, F- and I in groundwater under the influence of the sedimentary environment in Hetao Basin. In this study, 499 groundwater samples were collected. Sedimentary environments, hydrogeochemical process, isotopes were analyzed to elucidate their enrichment mechanisms. The environment of groundwater is weakly alkaline. The hydrochemical types of groundwater are mainly Na-Cl-HCO3. The distribution of isotope δ18O demonstrates that irrigation from the Yellow River is the main recharge source. The main drainage channel is the discharge area in the Hetao basin. Based on the clay-sand ratio (R), the number of clay layers (N) and terrain slope (S), Hetao Basin was divided into four sedimentary environmental zones. The distribution of As (0-916.70 μg/L), F- (0.05-8.60 mg/L) and I (0.01-3.00 mg/L) was featured by a clear zonation of the sedimentary environment. The high As and high I groundwater were mainly distributed in the paleochannel zone of the Yellow River, with exceedance rates of 80.28% and 52.58%, and the median values of 73.91 μg/L and 0.11 mg/L, respectively. In the reducing environment, the release of As initially adsorbed on iron hydrogen and iron oxide, the reductive of iron hydroxide itself, rock weathering and evaporation are the key factors affecting the enrichment of As in groundwater. In this area, large amounts of aquatic organisms and plankton deposited in the sediment and channel filling deposits abundant with organic matter is the premise of high-I groundwater. The reduction of iodate and nitrate directly leads to the high concentration of I in groundwater. The high F- groundwater was mainly distributed in the piedmont alluvial-pluvial fan and the north margin of Ordos Plateau, with exceedance rates of 58.62% and 43.30%, and the median values of 1.10 mg/L and 0.86 mg/L, respectively. High F- groundwater in the two zones is affected by the abundant biotite and hornblende in Langshan Mountain and Ordos Plateau. Under evaporation, the precipitation rate of CaF2 and pH plays key roles in the enrichment of F- in groundwater. In the Hetao Basin, sedimentary environment is the main controlling factor for the co-mobilization of As, F- and I in groundwater.
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Affiliation(s)
- Zeyan Li
- The Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang 050061, China; Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China; Hebei Cangzhou Groundwater and Land Subsidence National Observation and Research Station, Shijiazhuang 050061, China
| | - Wengeng Cao
- The Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang 050061, China; Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China; Hebei Cangzhou Groundwater and Land Subsidence National Observation and Research Station, Shijiazhuang 050061, China.
| | - Yu Ren
- The Institute of Hydrogeology and Environmental Geology, CAGS, Shijiazhuang 050061, China; Key Laboratory of Groundwater Sciences and Engineering, Ministry of Natural Resources, Shijiazhuang 050061, China; Hebei Cangzhou Groundwater and Land Subsidence National Observation and Research Station, Shijiazhuang 050061, China
| | - Deng Pan
- Institute of Natural Resource Monitoring of Henan Province, Zhengzhou 450016, China
| | - Shuai Wang
- Institute of Natural Resource Monitoring of Henan Province, Zhengzhou 450016, China
| | - Chuanshun Zhi
- School of Water Conservancy and Environment, University of Jinan, 250022, China
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Microbial Community Structure of Arsenic-Bearing Groundwater Environment in the Riverbank Filtration Zone. WATER 2022. [DOI: 10.3390/w14101548] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Arsenic (As) contamination of groundwater is a global public health problem. Microorganisms have a great effect on the migration and transformation of arsenic. Studying the effect of microbial community structure and function on arsenic release in the groundwater environment of the riverbank filtration zone has important theoretical and practical significance. In this paper, in-situ monitoring technology and molecular biology technology were used to study the microbial community in the process of river water infiltration in the Shenyang Huangjia water source, China. The results showed that the structure, diversity and abundance of the microbial community in groundwater were closely related to the arsenic content. Proteobacteria was the dominant phylum in groundwater of the study area, and Acinetobacter, Pseudomonas, Sulfuritalea, Sphingomonas and Hydrogenophaga etc. were the main dominant bacterial genera. In addition to reducing and oxidizing arsenic, these functional microorganisms also actively participated in the biogeochemical cycle of elements such as iron, manganese, nitrogen and sulfur. There was a significant correlation between dominant bacteria and environmental factors. Fe/Mn had a significant positive correlation with As, which brought potential danger to the water supply in high iron and manganese areas.
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Cao W, Gao Z, Guo H, Pan D, Qiao W, Wang S, Ren Y, Li Z. Increases in groundwater arsenic concentrations and risk under decadal groundwater withdrawal in the lower reaches of the Yellow River basin, Henan Province, China. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 296:118741. [PMID: 34953952 DOI: 10.1016/j.envpol.2021.118741] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 06/14/2023]
Abstract
The spatiotemporal variability in groundwater arsenic concentrations following extensive groundwater extractions over decades was rarely studied on a large scale. To fill this gap, variations in groundwater arsenic concentrations in the North Henan Plain in China from 2010 to 2020 were investigated. The possibility of high-arsenic groundwater (>10 μg/L) was higher than 40% in aquifers within a distance of 100 m from paleochannels. This may be due to the fact that deposits in paleochannels were rich in organic matter and suitable for arsenic enrichment. Following groundwater withdrawal over ten years from 2010 to 2020, nearly half of groundwater samples (44%) were elevated in groundwater arsenic concentrations, and the proportion of high arsenic groundwater increased from 24% in 2010 to 26% in 2020. These may be related to enhanced Fe(III) oxide reduction under decadal groundwater withdrawal. However, around 56% groundwater samples were decreases in arsenic concentrations because of increased NO3- levels in these samples in 2020. Furthermore, extensive groundwater withdrawal decreased groundwater tables averagely by 4.6 m from 2010 to 2020, which induced the intrusion of high-arsenic groundwater from shallow aquifers into deeper ones. More importantly, the long-term groundwater pumping has perturbed groundwater flow dynamics and redistributed high-arsenic groundwater in the plain, leading to 18% more areas and 33.8% more residents being potentially at risk. This study suggests that the threat of groundwater overexploitation may be much more severe than previously expected.
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Affiliation(s)
- Wengeng Cao
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, PR China; National Observation and Research Station on Groundwater and Land Subsidence in Beijing-Tianjin-Hebei Plain, Shijiazhuang, 050061, PR China
| | - Zhipeng Gao
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, PR China
| | - Huaming Guo
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, 100083, PR China.
| | - Deng Pan
- Institute of Natural Resource Monitoring of Henan Province, Zhengzhou, 450016, PR China
| | - Wen Qiao
- China Institute of Geo-Environment Monitoring, China Geological Survey, Beijing, 100081, PR China; Key Laboratory of Mine Ecological Effects and Systematic Restoration, Ministry of Natural Resources, Beijing, 100081, PR China
| | - Shuai Wang
- Institute of Natural Resource Monitoring of Henan Province, Zhengzhou, 450016, PR China
| | - Yu Ren
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, PR China; National Observation and Research Station on Groundwater and Land Subsidence in Beijing-Tianjin-Hebei Plain, Shijiazhuang, 050061, PR China
| | - Zeyan Li
- Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang, 050061, PR China; National Observation and Research Station on Groundwater and Land Subsidence in Beijing-Tianjin-Hebei Plain, Shijiazhuang, 050061, PR China
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