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Prediction on the fluoride contamination in groundwater at the Datong Basin, Northern China: Comparison of Random Forest, Logistic Regression and Artificial Neural Network
Highlights Three algorithms, Random Forest, Artificial Neural Network, and Logistic Regression classifiers, were employed for the Prediction of groundwater fluoride The variables influencing the fluoride in the study area were evaluated Python 3.7 was used for the analysis of the three models Abstract Groundwater fluoride is posing a health risk to humans, and analyzing groundwater […]
China -
Geochemical controls on the enrichment of fluoride in the mine water of the Shendong mining area, China
Highlights 51% of mine water samples exceed the Chinese drinking water limit for fluoride (1 mg/L). The overall mine water quality is influenced by cation exchange, dissolution of minerals and so on. NaHCO3 type mine water possesses the highest average fluoride concentration. Fluoride concentrations are overall proportional to higher pH, TDS, and EC levels. Fluoride […]
China Coal Industry Mining Industry -
Predicting geogenic groundwater fluoride contamination throughout China
Highlights High fluoride groundwater risk map was generated. Climate variables are the most important indicators. High fluoride risk areas comprise a total of 27.6% of the country. About 89 million rural people are at health risk due to fluoride exposure. The risk map can be used by authorities to prioritize fluoride mitigation. Abstract Endemic fluorosis […]
China -
Fluoride and nitrate contamination of groundwater in the Loess Plateau, China: Sources and related human health risks
Highlights Fluoride and nitrate sources were identified by chemical and isotopic analysis. Water-rock interaction, evaporation and anthropogenic activities control F– contents. Major nitrate sources are soil N, chemical fertilizers, and manure and sewage. Absence of denitrification emphasizes the importance of controlling nitrate sources. Non-carcinogenic health risks of fluoride and nitrate increase with decreasing age. Abstract […]
China -
Simulation study on the migration of F- in soil around Chagan Lake, China
Abstract Chagan Lake is located in the high-fluorine area of western Jilin, with high fluoride content in surface water, soil, and groundwater around it. Due to its unique topography and hydrogeological conditions, Chagan Lake collects surrounding water and is closely connected with groundwater. The complex surrounding water not only affects the groundwater quality through Chagan […]
China -
Spatial distribution and potential health risk of fluoride in drinking groundwater sources of Huaibei, Anhui Province
Abstract Fluoride enrichment in drinking groundwater at Huaibei leads to potential health risk to the residents. A total of 49 groundwater samples from groundwater sources were collected to evaluate the potential health risk of fluoride ingestion through drinking water for children and adults in Huaibei. Results shown that the average concentration of fluoride in centralized […]
China -
The Unfinished Battle for Drinking Water Security in Post-poverty Rural China
The Huangzhong district in Xining city, the capital of Qinghai Province, is home to 8,980 families, all of whom received assistance under China’s national policy to eradicate extreme poverty (below 2,300 yuan per person per year). Through social assistance and private sector financing, Huangzhong district succeeded in lifting all 28,706 residents out of extreme poverty […]
China -
A characterization of groundwater fluoride, influencing factors and risk to human health in the southwest plain of Shandong Province, North China
Highlights Over 30% of the groundwater samples have fluoride >1.0 mg L?1. Cation exchange was an important factor affecting the fluoride concentration of groundwater in the study area. Distributions of fluoride concentration and hazard quotient for children and adults were obtained. Fluoride concentration was the most influential variable in the risk assessment. Abstract This study […]
China -
Recycling of Spent Pot Lining First Cut from Aluminum Smelters by Utilizing the Two-Step Decomposition Characteristics of Dolomite
Abstract Spent Pot Lining First Cut (shortened to SPL-1cut) is a solid waste discharged from a primary aluminum electrolytic production process. SPL-1cut is classified as hazardous waste in China because it contains large amounts of soluble sodium fluoride and a tiny amount of cyanide. Most of SPL-1cut is carbon-about 65%-and its calorific value is 22.587 […]
China Aluminum Industry -
A Fluorogenic and Chromogenic Probe Distinguishes Fluoride Anions and Thiols: Implications for Discrimination of Fluoride-Containing G Series and Sulfur-Containing V Series Nerve Agents.
Abstract A coumarin-based probe, FP2, was designed for the differential detection of fluoride anions and thiols, i.e., the corresponding nucleophilic substitution products from fluorine-containing G agents and sulfur-containing V agents, thus having the potential to discriminate between these two nerve agents. FP2 with two functional reaction groups, a, B-unsaturated ketone and silyl groups, can react […]
China Chemical Weapons
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