2009—2020年淮河流域皖北3市氟化物变化研究
2021-03-18唐萍王欢耿天召
唐萍 王欢 耿天召



摘要 采用单因子评价法和Spearman 秩相关系数法研究2009—2020年淮河流域皖北3市氟化物变化特征。结果表明,近10年淮河流域皖北3市主要断面氟化物均值超标,超标率较高;淮河流域皖北地区氟化物与氨氮、COD和总磷均不存在显著相关性。淮河流域皖北地区氟化物超标,主要因为区域土壤母质氟化物及碳酸钙含量高于全国平均水平,区域地下水氟化物浓度本底值偏高,气候因素致使该区域地下水中氟化物更容易富集以及地表水氟化物及高含氟地下水相关等。
关键词 淮河流域;皖北3市;氟化物;变化
中图分类号 X83 文献标识码 A
文章编号 0517-6611(2021)04-0059-06
doi:10.3969/j.issn.0517-6611.2021.04.016
Change of Fluoride in Three Cities in Northern Anhui in Huaihe River Basin in 2009-2020
TANG Ping ,WANG Huan,GENG Tian-zhao (Anhui Ecological Environment Monitoring Center,Hefei,Anhui 230071)
Abstract Single factor evaluation method and Spearman rank correlation coefficient method were used to study the variation characteristics of fluoride in Huaihe River Basin in 2009-2020.In recent ten years,the average of fluoride in the main sections of Huaihe River Basin in Northern Anhui exceeded the standard,the over standard rate was high,there was no significant correlation between fluoride and ammonia nitrogen,COD and total phosphorus in Huaihe River Basin.The main reasons for the excessive fluoride in Huaihe River Basin in Northern Anhui are that the contents of fluoride and calcium carbonate in soil are higher than the national average level, the background value of fluoride concentration in groundwater is higher,the fluoride concentration in groundwater is more easily enriched due to climate factors,and the fluoride in surface water and groundwater with high fluoride content are related.
Key words Huaihe River Basin;Three cities in Northern Anhui;Fluoride;Change
基金項目 第二次全国污染源普查工业源普查报表制度及普查数据质量控制实施技术支持项目(22110399005)。
作者简介 唐萍(1980—),女,安徽枞阳人,工程师,硕士,从事环境质量综合分析研究。通信作者,正高级工程师,硕士,从事环境质量监测研究。
收稿日期 2020-12-10
皖北3市(亳州、淮北和宿州)地处安徽省最北部,与苏、鲁、豫3省交界,总面积分别为2 741、8 374和9 787 km2,皖北3市均位于淮北平原,沿线地质属于华北地层区、鲁西地层分区,徐州-宿县小区。基岩主要有第四系寒武系、奥陶系、石炭系和二迭系等地层[1]。淮北平原土壤类型主要为钙质结核土及黄泛冲积形成的新近沉积粉土,土壤母质均富含碳酸钙和氟。根据《安徽淮北平原土壤》[2]中土壤调查方法,淮北平原土壤中氟含量明显偏高,质量比平均值为457 mg/kg(我国土壤中氟平均值为440 mg/kg,世界土壤中氟平均值为200 mg/kg),这为区内高氟水提供了物质来源,该地区属于安徽省高氟地区。……
