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 |
1990.04.11 |
1990.05.09 |
1990.06.06 |
1990.07.18 |
1990.08.08 |
1990.09.05 |
1990.10.03 |
1990.11.14 |
1990.12.12 |
1991.01.16 |
1991.02.13 |
1991.03.06 |
| 採取時刻 |
1030 |
1005 |
1110 |
1010 |
1000 |
1020 |
1055 |
0955 |
1030 |
1015 |
1025 |
1010 |
| 天候 |
晴れ |
晴れ |
晴れ |
曇り |
晴れ |
晴れ |
晴れ |
曇り |
晴れ |
一時雪 |
晴れ |
晴れ |
| 気温 (℃) |
16 |
21 |
20 |
25 |
28 |
25.5 |
18 |
16 |
10 |
1 |
1 |
9 |
| 水温 (℃) |
9 |
13.3 |
20.7 |
18.1 |
24.5 |
19 |
16 |
9.4 |
8.6 |
2.3 |
2.8 |
4.5 |
| pH |
6.9 |
6.8 |
6.8 |
6.8 |
7.1 |
7.2 |
7 |
6.7 |
6.5 |
7.1 |
7.1 |
6.8 |
| DO (mg/l) |
11 |
10 |
10 |
10 |
8.5 |
9.3 |
9.4 |
10 |
9.3 |
14 |
14 |
12 |
| BOD (mg/l) |
1.2 |
< 0.5 |
1.3 |
< 0.5 |
< 0.5 |
0.8 |
< 0.5 |
0.5 |
0.5 |
0.6 |
0.6 |
1 |
| SS (mg/l) |
1 |
3 |
1 |
3 |
2 |
2 |
3 |
5 |
< 1 |
1 |
1 |
3 |
| 大腸菌群数 (MPN/100ml) |
3.5E+02 |
7.0E+02 |
2.4E+04 |
3.3E+03 |
7.0E+04 |
4.9E+03 |
1.1E+04 |
3.3E+04 |
4.9E+03 |
7.9E+02 |
4.9E+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) |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
| アルキル水銀 (mg/l) |
|
N |
|
N |
|
N |
|
N |
|
N |
|
N |
| 銅 (mg/l) |
|
< 0.01 |
|
< 0.01 |
|
< 0.01 |
|
< 0.01 |
|
< 0.01 |
|
< 0.01 |
| 亜鉛 (mg/l) |
|
0.01 |
|
0.01 |
|
0.01 |
|
0.02 |
|
0.04 |
|
0.01 |