River Water Quality Monitoring 1990 to 2018 - Dissolved Iron

<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This table provides the raw data from river monitoring sites including Water Framework Directive monitoring sites. It should be noted that, as the data set is in its raw state, it cannot be used to provide a status without processing. The data set does not show Limits of Detection or Limit of Quantitation which would require a value to be treated as a half value for WFD calculation. In addition both altitude and alkalinity affect status calculations for some parameters. The data set may contain results which are erroneous due to typos, sampling error or contamination, such data points are usually several orders or magnitude above expected values.</SPAN></P><P><SPAN>This is the first in a series of water data sets being made available as Open Data. Other data sets remain available on request via [e-mail]</SPAN></P><P><SPAN>The European Water Framework Directive (2000/60/EC) has been transposed into Northern Ireland regulations through The Water Environment (Water Framework Directive) Regulations (Northern Ireland) 2017. The Water (Amendment) (Northern Ireland) (EU Exit) Regulations 2019 ensures that the Water Framework Directive (WFD) (as transposed) and the various supporting pieces of water legislation continue to operate here after 1 January 2021. The regulation encourage the active involvement of interested parties and the general public.</SPAN></P><P><SPAN>The regulations set out the requirement to achieve 'Good Ecological Status' and 'Good Chemical Status' for all ground and surface waters (rivers, lakes, transitional waters, and coastal waters) within Northern Ireland.</SPAN></P><P><SPAN>Surface waters are assessed according to the following criteria:</SPAN></P><UL><LI><P><SPAN>Biological quality (fish, invertebrates, flora)</SPAN></P></LI><LI><P><SPAN>Hydromorphological</SPAN></P></LI><LI><P><SPAN>Physico-chemical properties like temperature, oxygenation and nutrient conditions.</SPAN></P></LI><LI><P><SPAN>Chemical quality assessed against environmental quality standards for specific pollutants and priority substances.</SPAN></P></LI></UL><P><SPAN>The following physio-chemical and chemical parameters are included in the data set:</SPAN></P><UL><LI><P><SPAN>FESOL1(ug/l)- Iron Dissolved</SPAN></P></LI></UL></DIV></DIV></DIV>本表格收录了河流监测站点的原始监测数据，其中涵盖水框架指令（Water Framework Directive, WFD）监测站点数据。需特别说明，本数据集处于未加工的原始状态，未经处理无法直接用于水体状态评估。数据集未包含检出限（Limits of Detection）与定量限（Limit of Quantitation）相关信息，而在WFD计算中，此类缺失数值需按半值规则进行处理。此外，海拔与碱度会对部分参数的状态评估计算产生影响。本数据集可能存在因录入笔误、采样误差或样品污染导致的异常结果，此类异常数据点通常较预期数值高出数个数量级。 本数据集为首批以开放数据形式发布的水环境数据集系列之一。其余数据集仍可通过发送邮件至[e-mail]申请获取。 欧洲议会与理事会《2000/60/EC号水框架指令》已通过《2017年水环境（水框架指令）（北爱尔兰）条例》转化为北爱尔兰本地法规。《2019年水（修订）（北爱尔兰）（脱欧）条例》确保了经转化后的《水框架指令（WFD）》及各项配套水环境法规，自2021年1月1日起仍可在北爱尔兰地区有效施行。上述法规鼓励利益相关方与社会公众的积极参与。 上述法规明确要求，北爱尔兰境内所有地下水与地表水（包括河流、湖泊、过渡水域及近岸海域）均需达到"良好生态状态"与"良好化学状态"标准。 地表水将依据以下标准开展评估： - 生物质量（鱼类、无脊椎动物、水生植物） - 水文形态学指标 - 理化性质，涵盖温度、溶解氧及营养盐状况 - 化学质量：依据特定污染物与优先管控物质的环境质量标准进行评估 本数据集包含以下理化与化学参数： - FESOL1（微克/升，ug/l）——溶解态铁