湘江湾河断面监测数据统计(2020.6)
湘江湾河断面监测数据统计 | ||||||||||
采样日期:2020.6.1 | ||||||||||
监测 项目 | 单位 | 采样位置 | 最低值 | 最高值 | 平均值 | Ⅲ类水质标准 | 超标率 % | 单项水质类别 | ||
左 | 中 | 右 | ||||||||
水温 | 摄氏度 | 26.2 | 26.4 | 26.2 | 26.2 | 26.4 | 26.3 | / | / | / |
电导率 | ms/m | 23.0 | 22.1 | 22.0 | 22.1 | 23.0 | 22.4 | / | / | / |
pH | 无量纲 | 7.55 | 7.65 | 7.82 | 7.55 | 7.82 | 7.67 | 6~9 | 0.00 | Ⅰ |
溶解氧 | mg/L | 6.5 | 6.0 | 6.2 | 6.0 | 6.5 | 6.2 | ≥5 | 0.00 | Ⅱ |
高锰酸盐指数 | mg/L | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | ≤6 | 0.00 | Ⅱ |
化学需氧量 | mg/L | 9 | 8 | 7 | 7 | 9 | 8 | ≤20 | 0.00 | Ⅰ |
生化需氧量 | mg/L | 1.3 | 1.2 | 1.1 | 1.1 | 1.3 | 1.2 | ≤4 | 0.00 | Ⅰ |
氨氮 | mg/L | 0.12 | 0.11 | 0.10 | 0.10 | 0.12 | 0.11 | ≤1.0 | 0.00 | Ⅰ |
总磷 | mg/L | 0.02 | 0.01 | 0.01 | 0.01 | 0.02 | 0.01 | ≤0.2 | 0.00 | Ⅰ |
总氮 | mg/L | 1.66 | 1.65 | 1.64 | 1.64 | 1.66 | 1.65 | ≤1.0 | / | / |
铜 | mg/L | 0.001ND | 0.001ND | 0.001ND | 0.001ND | 0.001ND | 0.001ND | ≤1.0 | 0.00 | Ⅰ |
锌 | mg/L | 0.05ND | 0.05ND | 0.05ND | 0.05ND | 0.05ND | 0.05ND | ≤1.0 | 0.00 | Ⅰ |
氟化物 | mg/L | 0.231 | 0.246 | 0.255 | 0.231 | 0.255 | 0.244 | ≤1.0 | 0.00 | Ⅰ |
硒 | mg/L | 0.0004ND | 0.0004ND | 0.0004ND | 0.0004ND | 0.0004ND | 0.0004ND | ≤0.01 | 0.00 | Ⅰ |
砷 | mg/L | 0.0003ND | 0.0003ND | 0.0003ND | 0.0003ND | 0.0003ND | 0.0003ND | ≤0.05 | 0.00 | Ⅰ |
汞 | mg/L | 0.00004ND | 0.00004ND | 0.00004ND | 0.00004ND | 0.00004ND | 0.00004ND | ≤0.0001 | 0.00 | Ⅰ |
镉 | mg/L | 0.0001ND | 0.0001ND | 0.0001ND | 0.0001ND | 0.0001ND | 0.0001ND | ≤0.005 | 0.00 | Ⅰ |
六价铬 | mg/L | 0.004ND | 0.004ND | 0.004ND | 0.004ND | 0.004ND | 0.004ND | ≤0.05 | 0.00 | Ⅰ |
铅 | mg/L | 0.002ND | 0.002ND | 0.002ND | 0.002ND | 0.002ND | 0.002ND | ≤0.05 | 0.00 | Ⅰ |
氰化物 | mg/L | 0.001ND | 0.001ND | 0.001ND | 0.001ND | 0.001ND | 0.001ND | ≤0.2 | 0.00 | Ⅰ |
挥发酚 | mg/L | 0.0003ND | 0.0003ND | 0.0003ND | 0.0003ND | 0.0003ND | 0.0003ND | ≤0.005 | 0.00 | Ⅰ |
石油类 | mg/L | 0.01 | 0.01 | 0.01ND | 0.01ND | 0.01 | 0.01 | ≤0.05 | 0.00 | Ⅰ |
阴离子表面活性剂 | mg/L | 0.05ND | 0.05ND | 0.05ND | 0.05ND | 0.05ND | 0.02 | ≤0.2 | 0.00 | Ⅰ |
硫化物 | mg/L | 0.005ND | 0.005ND | 0.005ND | 0.005ND | 0.005ND | 0.005ND | ≤0.2 | 0.00 | Ⅰ |
粪大肠菌群 | 个/L | 9200 | 9200 | 9200 | 9200 | 9200 | 9200 | ≤10000 | 0.00 | Ⅲ |
断面水 质类别 | Ⅱ类 | 主要污染物 | / | |||||||