In this paper, we applied a continuous fractionation method to analyze the spatial distribution, occurrence characteristics and release of fluorine in the interstitial water, surface sediments and core sediments of DaiHai Lake, with aiming to reveal the migration and transformation of fluorine in the water-sediment of DaiHai. Investigation results showed that the average of the fluoride ion concentration in the interstitial water was (4.82±0.06)mg/L, which largely exceeded the threshold in National surface water standard criterion Ⅴ(1.5mg/L). Moreover, the relative concentration of fluoride ion between the interstitial water and the overlying water(4.77mg/L) remained stable. The average of the total fluoride in the surface sediments was (934.13±36.79) mg/kg, including (34.39±1.69)mg/kg water-solution fluoride, (7.11±0.93)mg/kg exchangeable fluoride, (3.07±0.50)mg/kg Fe/Mn bound, (11.97±0.79)mg/kg Organic bound and (934.13±36.79)mg/kg residual fluoride. In the core sediments, the fluoride ion concentrations of water-solution, exchangeable, Organic bound reduced with sediment depth increasing, and kept stable under 40cm; however, the fluorine of Fe/Mn bound was low in the surface and became stable under 25cm. Depending on the multiple regression analysis, both the amount of the water-solution fluorine and exchangeable fluorine of the sediment had much positively correlated with the fluorine in the interstitial water, and the fluorine had a strong migration ability. The stability risk assessment indicated that the range of SAC in the surface sediments was between 55.53%~69.52%, with the average being 60.63%, but in a largely unstable state. In addition, the SAC would decrease from the surface down 20cm, which indirectly reflected that the concentration of extractable fluoride had been obvious in recent years, with strong releases risk.
杨金燕,苟敏.中国土壤氟污染研究现状[J]. 生态环境学报, 2017,26(3):506-513. Yang J Y, Gou M. The research status of fluorine contamination in soils of China[J]. Ecology and Environmental Sciences, 2017,26(3):506-513.
Edmunds W M, Smedley P L. Fluoride in natural waters[M]. Essentials of Medical Geology, Dordrecht:Springer, 2012:311-336.
Ali S, Thakur S K, Sarkar A, et al. Worldwide contamination of water by fluoride[J]. Environmental Chemistry Letters, 2016,14:291-315.
Amini M, Mueller K, Abbaspour K C, et al. Statistical modeling of global geogenic fluoride contamination in ground waters[J]. Environmental Science & Technology, 2008,42:3662-3668.
郜红建,张显晨,张正竹,等.安徽省饮用水中氟化物含量及健康风险分析[J]. 中国环境科学, 2010,30(4):464-467. Hao H J, Zhang X C, Zhang Z Z, et al. Fluoride levels and its implications for health risk in drinking water in Anhui Province[J]. China Environmental Science, 2010,30(4):464-467.
Julio A, Camargo, Álvaro Alonso. Ecotoxicological assessment of the impact of fluoride (F-) and turbidity on the freshwater snail Physella acuta in a polluted river receiving an industrial effluent[J]. Environmental Science and Pollution Research, 2017,24(18):15667-15677.
Gonzalo C, Camargo J A. Fluoride bioaccumulation in the signal crayfish Pacifastacus leniusculus (Dana) as suitable bioindicator of fluoride pollution in freshwater ecosystems[J]. Ecological Indicators, 2012,20:244-251.
Aguirre-Sierra A, Alonso A, Camargo J A. Fluoride bioaccumulation and toxic effects on the survivaland behavior of the endangered white-clawed crayfish austropotamobius pallipes (Lereboullet)[J]. Archives of Environmental Contamination and Toxicology, 2013,65:244-250.
Martignon S, Opazo-Gutiérrez M O, Velásquez-Riaño M, et al. Geochemical characterization of fluoride in water, table salt, active sediment, rock and soil samples, and its possible relationship with the prevalence of enamel fluorosis in children in four municipalities of the department of Huila (Colombia)[J]. Environmental Monitoring and Assessment, 2017,189:264.
Martínez D E, Londoño O Q, Massone H E, et al. Hydrogeochemistry of fluoride in the Quequen river basin:natural pollutants distribution in the argentine pampa[J]. Environmental Earth Science, 2012,65:411-420.
于群英,慈恩,杨林章.皖北地区土壤中不同形态氟含量及其影响因素[J]. 应用生态学报, 2007,18(6):1333-1340. Yu Q Y, Ci E, Yang L Z. Contents of different soil fluorine forms in North Anhui and their affecting factors[J]. Chinese Journal of Applied Ecology, 2007,18(6):1333-1340.
桂建业,韩占涛,张向阳,等.土壤中氟的形态分析[J]. 岩矿测试, 2008,(4):284-286. Gui J Y, Han Z T, Zhang X Y, et al. Speciation analysis of fluorine in soil samples[J]. Rock and Mneral analysis, 2008,(4):284-286.
吴卫红,谢正苗,徐建明,等.不同土壤中氟赋存形态特征及其影响因素[J]. 环境科学, 2002,23(2):104-108. Wu W H, Xie Z M, Xu J M, et al. Characteristics of forms of fluorine in soils and influential factors[J]. Environmental Science, 2002,23(2):104-108.
刘晓湾,赵亮,张鸿,等.深圳市表层土中氟化物组成及分布[J]. 中国环境科学, 2015,35(2):499-505. Liu X W, Zhao L, Zhang H, et al. Composition and distribution of the fluoride compounds in topsoil samples of Shenzhen[J]. China Environmental Science, 2015,35(2):499-505.
Li L, Wang Y X, Wu Y, Li J X. Major Geochemical controls on fluoride Enrichment in Groundwater:A case study at datong Basin, Northern China[J]. Journal of Earth Science, 2013,24(6):976-986.
刘璇,梁秀娟,肖霄,等. pH对吉林西部湖泊底泥中不同形态氟迁移转化影响的实验研究[J]. 环境污染与防治, 2011,33(6):19-22. Liu X, Liang X J, Xiao X, et al. Experimental study on the impact of pH on the migration and transformation of various forms of fluorine in the lake mud of the western Jilin[J]. Environmental Pollution and Control, 2011,33(6):19-22.
梁文军,春喜,刘继遥,等.近40a岱海湖面动态变化研究[J]. 干旱区资源与环境, 2017,31(4):93-98. Liang W J, Chun X, Liu J Y, et al. Research on the area change processes in the past 40a of Daihai Lake[J]. Journal of Arid Land Resources and Environment, 2017,31(4):93-98.
程玉琴,郑丽娟,付志强.岱海湖泊萎缩原因分析及流域水生态保护建议[J]. 内蒙古气象, 2017,(5):24-26. Chen Y Q, Zheng L J, Fu Z Q. Analysis of cause of Daihai lake shrinkage and water conservation recommendations[J]. Meteorology Journal of Inner Mongolia, 2017,5:24-26.
秦樊鑫,吴迪,黄先飞,等.高氟病区茶园土壤氟形态及其分布特征[J]. 中国环境科学, 2014,34(11):2859-2865. Qin F X, Wu D, Huang X F, et al. Distribution characteristics and speciation of fluorine in tea Garden soils in the high fluoride area[J]. China Environmental Science, 2014,34(11):2859-2865.
袁立竹,王加宁,马春阳,等.土壤氟形态与氟污染土壤修复[J]. 应用生态学报, 2019,30(1):10-20. Yuan L Z, Wang J Y, Ma C Y, et al. Fluorine speciation in soil and the remediation of fluorine contaminated soil[J]. Chinese Journal of Applied Ecology, 2019,30(1):10-20.
郭伟强,宋进喜,刘琪,等.潏河冬季潜流带水交换对沉积物间隙水水质的影响[J]. 环境科学学报, 2018,38(5):1957-1967. Guo W Q, Song J X, Liu Q, et al. Influence of hyporheic water exchange on quality of sediment pore water for the Juehe River in winter[J]. Acta Scientiae Circumstantiae, 2018,38(5):1957-1967.
GB 3838-2002地表水环境质量标准[S]. GB 3838-2002 Environmental Quality Standards for Surface Water[S].
毛海芳,何江,侯德坤,等.乌梁素海和岱海沉积物有机质降解与微生物量动态响应模拟试验研究[J]. 农业环境科学学报, 2013,32(1):118-126. Map H F, He J, Hou D K, et al. Simulated experiments on the degradation of organic matter dynamic response for microbial biomass in sediments from Lake Wuliangsuhai and Daihai, China[J]. Journal of Agro-Environment Science, 2013,32(1):118-126.
Tewodros R, Gianluca B, Luigi B, et al. Hydrogeochemical study in the Main Ethiopian Rift:new insights to the source and enrichment mechanism of fluoride[J]. Environmental Geology, 2009,58(1):109-118.
El-Said G F, Khalil M K, Draz S E O. Anomalous distribution of fluoride and phosphorus forms in surface sediments along eastern Egyptian Mediterranean Sea coast[J]. Environmental Science and Pollution Research, 2016,23(14):14240-14253.
魏志远,黎成厚,漆智平.几种土壤氟吸附动力学研究[J]. 土壤通报, 2006,37(4):720-722. Wei Z Y, Li C H, Qi Z P. Kinetics of fluorine adsorption in several soils[J]. Chinese Journal of Soil Science, 2006,37(4):720-722.
Singh K P, Mohan D, Singh V K, et al. Studies on distribution and fractionation of heavy metals in Gomti river sediments-a tributary of the Ganges, lndia[J]. Journal of Hydrology, 2005,312(1-4):14-27.
李静,谢正苗,徐建明,等.我国氟的土壤健康质量指标及评价方法的初步探讨[J]. 浙江大学学报, 2005,31(5):593-597. Li J, Xie Z M, Xu J M, et al. Preliminary study on guideline on soil health quality index of fluorine and method of its evaluation in China[J]. Journal of Zhejiang University, 2005,31(5):593-597.
陈庆沐,刘玉兰.氟的土壤地球化学与地方性氟中毒[J]. 环境科学, 1981,(6):5-9. Chen Q Y, Liu Y L. Soil geochemistry of fluoride and endemic fluorosis[J]. Environmental Science, 1981,(6):5-9.