測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
01954 |
北上川(4) |
北上川橋 |
A |
測定結果
採取年月日 |
1996.04.10 |
1996.04.24 |
1996.05.07 |
1996.05.22 |
1996.06.05 |
1996.06.26 |
1996.07.03 |
1996.07.29 |
1996.08.06 |
1996.08.06 |
1996.08.06 |
1996.08.06 |
1996.08.21 |
1996.09.04 |
1996.09.18 |
1996.10.02 |
1996.10.16 |
1996.11.06 |
1996.11.20 |
1996.12.04 |
1996.12.18 |
1997.01.08 |
1997.01.22 |
1997.02.05 |
1997.02.19 |
1997.03.05 |
1997.03.19 |
採取時刻 |
1105 |
1250 |
1125 |
1145 |
1050 |
1130 |
1156 |
1140 |
0130 |
0730 |
1330 |
1930 |
1323 |
1200 |
1245 |
1130 |
1140 |
1201 |
1125 |
1133 |
1225 |
1205 |
1220 |
1140 |
1128 |
1100 |
1130 |
天候 |
晴れ |
晴れ |
曇り |
曇り |
曇り |
晴れ |
曇り |
晴れ |
曇り |
曇り |
晴れ |
曇り |
曇り |
曇り |
曇り |
晴れ |
曇り |
晴れ |
晴れ |
曇り |
晴れ |
曇り |
晴れ |
晴れ |
雪 |
曇り |
曇り |
気温 (℃) |
9.2 |
23.0 |
14.0 |
15.7 |
21.5 |
23.0 |
22.0 |
32.0 |
16.5 |
21.3 |
30.8 |
22.1 |
28.5 |
22.0 |
22.3 |
20.0 |
16.5 |
14.8 |
8.3 |
5.0 |
9.3 |
2.5 |
0.3 |
2.5 |
1.0 |
7.0 |
11.5 |
水温 (℃) |
7.3 |
10.5 |
7.5 |
12.6 |
15.5 |
16.1 |
19.3 |
26.0 |
22.4 |
22.3 |
22.3 |
22.6 |
25.3 |
21.0 |
21.0 |
18.0 |
16.2 |
12.3 |
7.2 |
5.0 |
6.2 |
3.0 |
1.2 |
2.8 |
2.0 |
3.2 |
6.2 |
流量 (m3/s) |
395.04 |
430.80 |
662.91 |
474.17 |
352.52 |
762.80 |
389.23 |
184.10 |
328.17 |
302.13 |
246.34 |
192.14 |
114.66 |
213.01 |
164.73 |
119.42 |
114.66 |
111.54 |
182.11 |
164.73 |
213.01 |
237.21 |
166.62 |
135.99 |
157.29 |
262.72 |
255.63 |
外観 |
無色澄明 |
微白濁 |
茶色 |
微白濁 |
無色澄明 |
微茶濁 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
臭気 |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
pH |
7.3 |
7.3 |
7.2 |
7.2 |
7.2 |
7.2 |
7.4 |
7.5 |
7.4 |
7.4 |
7.5 |
7.5 |
7.6 |
7.6 |
7.6 |
7.6 |
7.7 |
7.6 |
7.4 |
7.6 |
7.5 |
7.4 |
7.7 |
7.7 |
7.7 |
7.3 |
7.4 |
DO (mg/l) |
11.0 |
10.0 |
11.0 |
9.7 |
9.7 |
8.5 |
8.4 |
8.0 |
8.7 |
8.4 |
8.3 |
8.6 |
8.1 |
8.2 |
8.9 |
9.9 |
10.0 |
9.5 |
11.0 |
11.0 |
12.0 |
12.0 |
13.0 |
14.0 |
13.0 |
12.0 |
12.0 |
BOD (mg/l) |
1.3 |
0.7 |
0.9 |
0.9 |
1.6 |
1.3 |
0.6 |
0.5 |
1.3 |
1.6 |
1.4 |
1.9 |
0.6 |
1.0 |
0.8 |
0.8 |
1.3 |
1.5 |
0.8 |
0.8 |
1.4 |
1.5 |
1.2 |
1.4 |
1.8 |
1.1 |
1.3 |
COD (mg/l) |
1.9 |
|
|
2.0 |
3.0 |
|
3.0 |
|
|
|
2.5 |
|
|
3.7 |
|
2.0 |
|
3.2 |
|
2.1 |
|
2.9 |
|
2.6 |
|
2.5 |
|
SS (mg/l) |
11 |
10 |
25 |
14 |
10 |
20 |
10 |
7 |
20 |
14 |
12 |
7 |
5 |
14 |
7 |
3 |
5 |
4 |
7 |
5 |
7 |
9 |
4 |
3 |
5 |
6 |
7 |
大腸菌群数 (MPN/100ml) |
2.2E+03 |
2.4E+04 |
3.3E+03 |
7.9E+02 |
1.7E+05 |
4.9E+03 |
1.7E+04 |
2.4E+03 |
7.9E+03 |
2.2E+02 |
7.9E+03 |
2.2E+03 |
4.9E+03 |
2.4E+03 |
3.3E+03 |
7.9E+02 |
3.3E+03 |
4.9E+02 |
1.1E+03 |
7.9E+02 |
3.3E+03 |
2.4E+03 |
7.9E+02 |
4.9E+03 |
4.9E+02 |
7.9E+03 |
2.3E+02 |
全窒素 (mg/l) |
|
|
|
0.82 |
|
|
0.93 |
|
|
|
|
|
|
1.10 |
|
|
|
1.20 |
|
|
|
1.00 |
|
|
|
1.10 |
|
全燐 (mg/l) |
|
|
|
0.055 |
|
|
0.073 |
|
|
|
|
|
|
0.084 |
|
|
|
0.093 |
|
|
|
0.056 |
|
|
|
0.045 |
|
カドミウム (mg/l) |
|
< 0.001 |
< 0.001 |
|
|
< 0.001 |
|
< 0.001 |
|
|
|
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
全シアン (mg/l) |
|
N |
N |
|
|
N |
|
N |
|
|
|
|
N |
|
N |
|
N |
|
N |
|
N |
|
N |
|
N |
|
N |
鉛 (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 |
六価クロム (mg/l) |
|
< 0.04 |
< 0.04 |
|
|
< 0.04 |
|
< 0.04 |
|
|
|
|
< 0.04 |
|
< 0.04 |
|
< 0.04 |
|
< 0.04 |
|
< 0.04 |
|
< 0.04 |
|
< 0.04 |
|
< 0.04 |
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 |
総水銀 (mg/l) |
|
< 0.0005 |
< 0.0005 |
|
|
< 0.0005 |
|
< 0.0005 |
|
|
|
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
PCB (mg/l) |
|
|
|
|
|
|
N |
|
|
|
|
|
|
|
|
|
|
N |
|
|
|
|
|
|
|
|
|
ジクロロメタン (mg/l) |
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
四塩化炭素 (mg/l) |
|
|
|
|
|
|
< 0.0002 |
|
|
|
|
|
|
|
|
|
|
< 0.0002 |
|
|
|
|
|
|
|
|
|
1,2-ジクロロエタン (mg/l) |
|
|
|
|
|
|
< 0.0004 |
|
|
|
|
|
|
|
|
|
|
< 0.0004 |
|
|
|
|
|
|
|
|
|
1,1-ジクロロエチレン (mg/l) |
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
シス-1,2-ジクロロエチレン (mg/l) |
|
|
|
|
|
|
< 0.004 |
|
|
|
|
|
|
|
|
|
|
< 0.004 |
|
|
|
|
|
|
|
|
|
1,1,1-トリクロロエタン (mg/l) |
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
1,1,2-トリクロロエタン (mg/l) |
|
|
|
|
|
|
< 0.0006 |
|
|
|
|
|
|
|
|
|
|
< 0.0006 |
|
|
|
|
|
|
|
|
|
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 |
|
|
|
|
|
1,3-ジクロロプロペン (mg/l) |
|
|
|
< 0.0002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
チウラム (mg/l) |
|
|
|
< 0.0006 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
シマジン (mg/l) |
|
|
|
< 0.0003 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
チオベンカルブ (mg/l) |
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ベンゼン (mg/l) |
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
セレン (mg/l) |
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
鉄(溶解性) (mg/l) |
|
|
|
0.13 |
|
|
0.13 |
|
|
|
|
|
|
0.11 |
|
|
|
0.14 |
|
|
|
0.10 |
|
|
|
0.10 |
|
アンモニア性窒素 (mg/l) |
|
|
|
< 0.1 |
|
|
< 0.1 |
|
|
|
|
|
|
< 0.1 |
|
|
|
< 0.1 |
|
|
|
0.1 |
|
|
|
< 0.1 |
|
クロロフィル-a (ug/l) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
13.0 |
|
|
|
|
|
透視度 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
塩化物イオン (mg/l) |
|
|
|
8 |
|
|
4 |
|
|
|
|
|
|
11 |
|
|
|
16 |
|
|
|
|
|
|
|
12 |
|
硫酸イオン (mg/l) |
|
|
|
12 |
|
|
12 |
|
|
|
|
|
|
21 |
|
|
|
27 |
|
|
|
16 |
|
|
|
17 |
|
酸度 (mg/l) |
|
|
|
4 |
|
|
2 |
|
|
|
|
|
|
2 |
|
|
|
3 |
|
|
|
2 |
|
|
|
2 |
|
アルカリ度 (mg/l) |
|
|
|
18 |
|
|
25 |
|
|
|
|
|
|
36 |
|
|
|
40 |
|
|
|
26 |
|
|
|
26 |
|