測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 24401 |
折壁川 |
折壁 |
|
測定結果
| 採取年月日 |
2013.01.11 |
2013.02.08 |
2013.03.01 |
2012.04.16 |
2012.05.16 |
2012.06.13 |
2012.07.18 |
2012.08.08 |
2012.09.07 |
2012.10.12 |
2012.11.16 |
2012.12.17 |
| 採取時刻 |
1110 |
1150 |
1030 |
0925 |
1035 |
1105 |
1100 |
1035 |
1050 |
1040 |
1110 |
1020 |
| 天候 |
曇り |
曇り |
曇り |
晴れ |
曇り |
曇り |
晴れ |
曇り |
晴れ |
曇り |
曇り |
曇り |
| 気温 (℃) |
-5 |
-6 |
3 |
9.2 |
16.5 |
18.3 |
25.5 |
19 |
22.5 |
12 |
5 |
3.5 |
| 水温 (℃) |
1 |
1 |
3.5 |
7.8 |
14.5 |
13.8 |
15.9 |
17 |
18.2 |
11.5 |
7.5 |
4.5 |
| 採取水深 (m) |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| pH |
7.1 |
6.8 |
7.5 |
6.8 |
7.2 |
7.0 |
7.1 |
7.0 |
7.3 |
7.0 |
7.6 |
7.4 |
| DO (mg/l) |
14 |
15 |
13 |
12 |
11 |
10 |
13 |
11 |
9.5 |
10 |
12 |
13 |
| BOD (mg/l) |
< 0.5 |
0.8 |
0.7 |
1.0 |
0.7 |
0.6 |
0.9 |
0.5 |
0.8 |
0.5 |
< 0.5 |
0.6 |
| COD (mg/l) |
1.0 |
1.0 |
1.2 |
1.1 |
1.3 |
1.4 |
1.9 |
1.0 |
1.0 |
1.0 |
1.0 |
1.2 |
| SS (mg/l) |
< 1 |
< 1 |
< 1 |
2 |
1 |
1 |
3 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
| 大腸菌群数 (MPN/100ml) |
1.4E+02 |
1.1E+02 |
7.9E+02 |
7.9E+01 |
4.9E+02 |
1.7E+03 |
2.7E+03 |
1.3E+03 |
4.9E+03 |
1.4E+03 |
1.3E+03 |
4.9E+02 |
| 全窒素 (mg/l) |
0.71 |
0.78 |
0.64 |
0.92 |
0.72 |
0.64 |
1.1 |
0.63 |
0.54 |
0.63 |
0.94 |
0.88 |
| 全燐 (mg/l) |
0.013 |
0.008 |
0.007 |
0.013 |
0.024 |
0.024 |
0.021 |
0.013 |
0.012 |
0.015 |
0.009 |
0.021 |
| 亜硝酸性窒素 (mg/l) |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
| アンモニア性窒素 (mg/l) |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
| クロロフィル-a (ug/l) |
< 1 |
1 |
3 |
< 1 |
1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
| 硝酸性窒素及び亜硝酸性窒素 (mg/l) |
0.6 |
0.6 |
0.6 |
0.8 |
0.6 |
0.5 |
1.0 |
0.5 |
0.5 |
0.5 |
0.9 |
0.8 |