測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 02201 |
豊沢川中流 |
新渕橋 |
A |
測定結果
| 採取年月日 |
1992.04.08 |
1992.05.06 |
1992.06.08 |
1992.07.08 |
1992.08.05 |
1992.09.02 |
1992.10.07 |
1992.11.04 |
1992.12.02 |
1993.01.06 |
1993.02.03 |
1993.03.10 |
| 採取時刻 |
0940 |
0940 |
0955 |
1145 |
0930 |
0928 |
0920 |
0937 |
0920 |
0930 |
0935 |
0935 |
| 天候 |
3 |
2 |
2 |
2 |
2 |
3 |
2 |
2 |
3 |
2 |
3 |
3 |
| 気温 (℃) |
6.0 |
14.2 |
18.0 |
27.0 |
22.5 |
26.0 |
13.0 |
13.0 |
7.0 |
3.0 |
2.0 |
4.0 |
| 水温 (℃) |
5.4 |
12.0 |
14.6 |
23.8 |
19.3 |
22.2 |
11.5 |
9.0 |
6.0 |
7.5 |
2.5 |
4.5 |
| pH |
6.8 |
6.9 |
7.1 |
7.4 |
7.4 |
7.6 |
7.6 |
7.1 |
7.4 |
7.7 |
7.5 |
7.4 |
| DO (mg/l) |
12 |
10 |
10.4 |
9.8 |
10 |
9 |
10 |
10 |
12 |
13 |
13 |
12 |
| BOD (mg/l) |
< 0.5 |
0.9 |
0.7 |
1.1 |
0.7 |
0.9 |
1.1 |
0.5 |
0.5 |
0.9 |
< 0.5 |
< 0.5 |
| SS (mg/l) |
1 |
1 |
2 |
2 |
2 |
3 |
6 |
7 |
2 |
< 1 |
1 |
1 |
| 大腸菌群数 (MPN/100ml) |
3.30E+02 |
4.90E+02 |
1.30E+03 |
3.30E+03 |
4.90E+03 |
2.80E+04 |
4.90E+03 |
7.90E+03 |
4.90E+02 |
1.30E+03 |
7.90E+02 |
1.30E+03 |
| カドミウム (mg/l) |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
| |
|
N |
|
|
|
|
|
|
|
|
|
|
| 鉛 (mg/l) |
|
< 0.05 |
|
< 0.05 |
|
< 0.05 |
|
< 0.05 |
|
< 0.05 |
|
< 0.05 |
| 砒素 (mg/l) |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
| 総水銀 (mg/l) |
|
< 0 |
|
< 0 |
|
< 0 |
|
< 0 |
|
< 0 |
|
< 0 |
| アルキル水銀 (mg/l) |
|
N |
|
N |
|
N |
|
N |
|
N |
|
N |
| 銅 (mg/l) |
|
< 0.1 |
|
< 0.1 |
|
< 0.1 |
|
< 0.1 |
|
< 0.1 |
|
< 0.1 |
| 亜鉛 (mg/l) |
|
0.3 |
|
0.4 |
|
0.5 |
|
0.1 |
|
< 0.1 |
|
< 0.1 |