測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
01852 |
北上川(3) |
朝日橋 |
A |
測定結果
採取年月日 |
1994.04.14 |
1994.05.11 |
1994.06.01 |
1994.07.20 |
1994.08.02 |
1994.08.02 |
1994.08.02 |
1994.08.02 |
1994.09.07 |
1994.10.17 |
1994.11.02 |
1994.12.07 |
1995.01.12 |
1995.02.09 |
1995.03.02 |
採取時刻 |
1025 |
1040 |
0945 |
1010 |
0140 |
0740 |
1340 |
1940 |
0935 |
0930 |
0955 |
0920 |
1055 |
1020 |
1020 |
天候 |
曇り |
曇り |
晴れ |
晴れ |
曇り |
曇り |
雨 |
曇り |
曇り |
晴れ |
晴れ |
曇り |
晴れ |
曇り |
曇り |
気温 (℃) |
13.5 |
20.2 |
23.0 |
26.5 |
25.2 |
26.2 |
28.5 |
28.0 |
22.0 |
16.5 |
11.0 |
4.1 |
1.1 |
3.1 |
3.5 |
水温 (℃) |
8.0 |
12.9 |
15.5 |
25.7 |
25.8 |
26.0 |
28.7 |
27.2 |
22.7 |
14.8 |
10.3 |
4.9 |
1.3 |
2.3 |
3.5 |
流量 (m3/s) |
193.23 |
112.06 |
140.88 |
39.80 |
30.92 |
30.92 |
27.45 |
51.33 |
54.44 |
60.93 |
38.46 |
57.64 |
56.30 |
47.10 |
73.20 |
pH |
7.3 |
7.2 |
7.2 |
7.8 |
7.4 |
7.3 |
7.9 |
7.4 |
7.5 |
7.3 |
7.9 |
7.4 |
7.4 |
7.5 |
7.6 |
DO (mg/l) |
12.0 |
11.0 |
9.7 |
9.1 |
7.2 |
6.6 |
8.9 |
7.0 |
7.6 |
9.4 |
12.0 |
12.0 |
13.0 |
13.0 |
13.0 |
BOD (mg/l) |
1.5 |
1.1 |
1.8 |
1.0 |
0.8 |
0.7 |
1.0 |
2.1 |
1.2 |
1.8 |
1.2 |
2.6 |
1.1 |
1.7 |
1.3 |
COD (mg/l) |
3.9 |
2.9 |
2.6 |
2.5 |
|
|
3.3 |
|
3.2 |
2.8 |
2.3 |
2.6 |
1.5 |
2.0 |
2.5 |
SS (mg/l) |
25 |
11 |
9 |
4 |
10 |
9 |
8 |
34 |
8 |
12 |
4 |
4 |
1 |
3 |
9 |
大腸菌群数 (MPN/100ml) |
1.7E+03 |
2.4E+03 |
3.3E+03 |
2.4E+03 |
4.9E+02 |
4.9E+02 |
4.9E+02 |
4.9E+03 |
1.7E+04 |
1.1E+04 |
1.1E+03 |
7.9E+03 |
7.0E+02 |
1.1E+04 |
1.7E+04 |
全窒素 (mg/l) |
|
1.40 |
|
1.50 |
|
|
|
|
1.80 |
|
1.50 |
|
1.30 |
|
1.40 |
全燐 (mg/l) |
|
0.080 |
|
0.063 |
|
|
|
|
0.073 |
|
0.027 |
|
0.034 |
|
0.047 |
砒素 (mg/l) |
< 0.005 |
< 0.005 |
< 0.005 |
< 0.005 |
|
|
< 0.005 |
|
< 0.005 |
< 0.005 |
< 0.005 |
< 0.005 |
< 0.005 |
< 0.005 |
< 0.005 |
トリクロロエチレン (mg/l) |
|
< 0.002 |
|
< 0.002 |
|
|
|
|
|
|
< 0.002 |
|
< 0.002 |
|
|
テトラクロロエチレン (mg/l) |
|
< 0.0005 |
|
< 0.0005 |
|
|
|
|
|
|
< 0.0005 |
|
< 0.0005 |
|
|
鉄(溶解性) (mg/l) |
|
0.36 |
|
0.21 |
|
|
|
|
0.17 |
|
0.14 |
|
0.14 |
|
0.27 |
透視度 |
> 30 |
> 30 |
> 30 |
> 30 |
> 30 |
> 30 |
> 30 |
20 |
> 30 |
> 30 |
> 30 |
> 30 |
> 30 |
> 30 |
> 30 |
酸度 (mg/l) |
|
3 |
|
2 |
|
|
|
|
4 |
|
1 |
|
4 |
|
3 |
アルカリ度 (mg/l) |
|
|
|
|
|
|
|
|
40 |
|
36 |
|
31 |
|
31 |