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 |
1991.04.10 |
1991.05.08 |
1991.06.05 |
1991.07.03 |
1991.08.07 |
1991.09.04 |
1991.10.02 |
1991.11.06 |
1991.12.04 |
1992.01.08 |
1992.02.05 |
1992.03.05 |
| 採取時刻 |
1115 |
1035 |
1045 |
1110 |
1030 |
1030 |
1100 |
1040 |
1115 |
1005 |
1050 |
1030 |
| 天候 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
薄曇り |
薄曇り |
晴れ |
晴れ |
晴れ |
晴れ |
薄曇り |
| 気温 (℃) |
11.0 |
23.0 |
24.5 |
25.0 |
21.5 |
25.0 |
22.5 |
9.0 |
8.0 |
7.6 |
1.0 |
3.0 |
| 水温 (℃) |
11.5 |
15.0 |
17.0 |
18.5 |
15.7 |
18.7 |
16.3 |
9.1 |
6.9 |
4.4 |
3.0 |
3.0 |
| pH |
7.3 |
7.4 |
7.2 |
7.2 |
7 |
7.2 |
7.6 |
7.3 |
7.3 |
7.1 |
7.5 |
7.4 |
| DO (mg/l) |
11 |
10 |
9.6 |
9.6 |
9.2 |
9.1 |
9.9 |
11 |
12 |
13 |
14.2 |
14.1 |
| BOD (mg/l) |
0.9 |
1.1 |
0.7 |
0.6 |
< 0.5 |
6.8 |
0.9 |
< 0.5 |
< 0.5 |
1 |
1.7 |
< 0.5 |
| SS (mg/l) |
3 |
2 |
< 1 |
1 |
2 |
1 |
3 |
1 |
1 |
8 |
< 1 |
< 1 |
| 大腸菌群数 (MPN/100ml) |
4.6E+02 |
2.2E+03 |
4.9E+03 |
7.0E+03 |
1.1E+04 |
4.9E+03 |
4.9E+03 |
1.7E+03 |
3.3E+03 |
4.9E+03 |
7.9E+02 |
3.3E+02 |
| 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) |
|
< 0.1 |
0.2 |
|
|
0.2 |
|
< 0.1 |
|
0.1 |
|
< 0.1 |