Spatial and vertical distribution and pollution assessment of soil fluorine in a lead-zinc mining area in the Karst region of Guangxi, China

Abstract

Soil pollution of fluorine is a serious environmental problem in the world, and the fluorine pollution evaluation of spatial and vertical distribution study in the Karst region is quite limited. In this study, the farmland around lead-zinc mine in the Karst region was chosen as the study area. Ninety-one upper layer soil samples and two soil profiles (one in paddy field, the other one in aerated field) samples were taken. The average concentration of total fluorine of topsoil in the paddy fields is 378 mg/kg, whereas in the aerated field it is 508 mg/kg. The concentrations of total fluorine in all paddy soil samples and 97.87% aerated field soils are higher than that of the background value of Guangxi. The total fluorine contaminations in all aerated field soils are much higher than in paddy soil samples, so the aerated field is contaminated severely. The vertical distribution of fluorine is different in paddy field and aerated field. In paddy field, the content of fluorine increases from 20 to 40 cm, then it decreases rapidly from 40 to 60 cm in depth, and then increases gradually. However, in the aerated field, the content of fluorine rises gradually with the depth of the sampling point. The results of relative analysis and regression analysis between fluorine in soil and soil properties show that the spatial distribution and vertical variation of fluorine in this region are mainly affected by parent rock.

Correlation among fluoride and metals in irrigation water and soils of Ethiopian Rift Valley

“…Except the value reported by US NAS [25], Washington DC, America and Smith and Hodge [26], fluoride in American soil is lower than this study, while others such as Toma et al [27], Moldova; Shomar et al [28], Israel; Zhang et al [29], China and others have comparable value of total fluoride with this study. The water soluble content of soil in this study is a bit higher than that of reported in literature, but comparable values also reported in America [25] and New Zealand [30].…”

X‐ray‐induced alteration of specimens as crucial obstacle in XRF spectrometry of fluorine in rocks and soils

“…Spectrometric determinations seem to be rather uncommon . Ion chromatography and potentiometry are predominantly used (e.g .…”

Fluorine contamination, mobility, and risks in soils at a phosphate-gypsum waste landfill: a new analytical method and comparison with previous methods

“…Due to the natural enrichment of uorine in soils and rocks, more than a thousand mg/kg of uorine in the soil is frequently observed in construction sites in South Korea. The high contents of uorine in the soil can also arise from various types of human activities, such as coal combustion, mineral processing of uorine-containing minerals, smelting of non-ferrous metals like aluminum, land lling of phosphate-gypsum wastes, and the application of sludge and phosphate fertilizers (Arnesen et al, 1995;Gilpin and Johnson, 1980;Xie et al, 2001;Loganathan et al, 2006;Zhang et al, 2010;Mikkonen et al, 2018;Fuge, 2019;Wang et al, 2021). The stabilization of uorine-contaminated soils is considered necessary to prevent the adverse effects of uorine-enrichment in the soil.…”