环境监控与预警
環境鑑控與預警
배경감공여예경
ENVIRONMENTAL MONITORING AND FOREWARNING
2015年
2期
42-45
,共4页
地下水%硝酸盐%亚硝酸盐%相关性分析%分布特征%华东某市老城区
地下水%硝痠鹽%亞硝痠鹽%相關性分析%分佈特徵%華東某市老城區
지하수%초산염%아초산염%상관성분석%분포특정%화동모시로성구
Groundwater%Nitrate%Nitrite%Correlation analysis%Distribution%Old city of east China
为了解华东某市老城区潜层地下水硝酸盐分布特征，对老城区地下水现场采样，运用统计学软件 spss 中的 Pearson相关系数和 sufer 软件 Kriging 插值方法分析数据，研究了无机氮与地球化学因素间的相关性，同时绘制了 pH 值、总硬度、硝酸盐、亚硝酸盐的空间分布图。结果表明，硝酸盐是该地区地下水中无机氮的主要存在形态，其所占总氮含量为45．5％～74．8％，封口井的硝酸盐的含量明显低于敞口井的含量，其硝酸盐所占比例最低达到2．2％，且敞口井均受到污染；从相关性的角度来看，氮的转化受到 Fe 影响较弱。同时氮的形态与 pH 值、矿化度（TDS）、电导率（EC）等地球化学因素相关水平显著；从分布特征来看，地下水环境中硝酸盐和亚硝酸盐含量东北部高于西南部；不同形态氮的相互转化影响地下水 pH值和总硬度，致使 pH 值的高值区为西南部，而总硬度高值区为东北部。
為瞭解華東某市老城區潛層地下水硝痠鹽分佈特徵，對老城區地下水現場採樣，運用統計學軟件 spss 中的 Pearson相關繫數和 sufer 軟件 Kriging 插值方法分析數據，研究瞭無機氮與地毬化學因素間的相關性，同時繪製瞭 pH 值、總硬度、硝痠鹽、亞硝痠鹽的空間分佈圖。結果錶明，硝痠鹽是該地區地下水中無機氮的主要存在形態，其所佔總氮含量為45．5％～74．8％，封口井的硝痠鹽的含量明顯低于敞口井的含量，其硝痠鹽所佔比例最低達到2．2％，且敞口井均受到汙染；從相關性的角度來看，氮的轉化受到 Fe 影響較弱。同時氮的形態與 pH 值、礦化度（TDS）、電導率（EC）等地毬化學因素相關水平顯著；從分佈特徵來看，地下水環境中硝痠鹽和亞硝痠鹽含量東北部高于西南部；不同形態氮的相互轉化影響地下水 pH值和總硬度，緻使 pH 值的高值區為西南部，而總硬度高值區為東北部。
위료해화동모시로성구잠층지하수초산염분포특정，대로성구지하수현장채양，운용통계학연건 spss 중적 Pearson상관계수화 sufer 연건 Kriging 삽치방법분석수거，연구료무궤담여지구화학인소간적상관성，동시회제료 pH 치、총경도、초산염、아초산염적공간분포도。결과표명，초산염시해지구지하수중무궤담적주요존재형태，기소점총담함량위45．5％～74．8％，봉구정적초산염적함량명현저우창구정적함량，기초산염소점비례최저체도2．2％，차창구정균수도오염；종상관성적각도래간，담적전화수도 Fe 영향교약。동시담적형태여 pH 치、광화도（TDS）、전도솔（EC）등지구화학인소상관수평현저；종분포특정래간，지하수배경중초산염화아초산염함량동북부고우서남부；불동형태담적상호전화영향지하수 pH치화총경도，치사 pH 치적고치구위서남부，이총경도고치구위동북부。
In order to understand the nitrate distribution characteristics of shallow groundwater in an old city of east China,the spa-tial variation analysis for nitrate(NO -3 )and nitrite (NO -2 )content of groundwater samples was studied.The Pearson correlation co-efficient and Kriging which were both statistical analysis methods were used to investigated the correlation between inorganic nitrogen and geochemical factors.The spatial distribution maps of pH value,total hardness,nitrate and nitrite were charted simultaneously. The results indicated that nitrate nitrogen of this area was the main form of inorganic nitrogen in groundwater,and the content of NO -3 ranged from 45.5% to 74.8%.The content of NO -3 in sealing wells was obviously lower than in opening wells,which was as low as 2.2%.The opening wells were all polluted.According to the correlation,the effect of iron ions on nitrogen transformation was relatively insignificant.The other influence factors,including pH value,total dissolved solids (TDS)and electrical conductivity (EC),provided strong correlation with inorganic nitrogen in the groundwater.From distribution characteristics,the concentrations of nitrate nitrogen and nitrite nitrogen in the northeast area were higher than in the southwest area,which was increased gradually. The nitrogen transformation between different forms affected the pH value and total hardness of groundwater.The high values of pH and total hardness appeared in the southwest area and the northeast area,respectively.
