測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
02401 |
和賀川上流 |
山室橋 |
AA |
測定結果
採取年月日 |
2004.04.26 |
2004.05.26 |
2004.06.16 |
2004.07.14 |
2004.08.18 |
2004.09.09 |
2004.10.13 |
2004.11.17 |
2004.12.08 |
2005.01.06 |
2005.02.02 |
2005.03.02 |
採取時刻 |
1020 |
1100 |
1150 |
1050 |
1130 |
1130 |
1045 |
1220 |
0940 |
1105 |
1000 |
1000 |
気温 (℃) |
8.7 |
19.7 |
21 |
17.8 |
20.5 |
22.8 |
15.6 |
9.2 |
4.9 |
-2.1 |
-3.2 |
-4.1 |
水温 (℃) |
6 |
10.2 |
17.5 |
16 |
16.9 |
18.2 |
12.8 |
8.2 |
6 |
1.1 |
1 |
1 |
採取水深 (m) |
0.2 |
0.4 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
0.2 |
全水深 (m) |
2 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
pH |
6.8 |
7.1 |
7.6 |
7.1 |
8.3 |
7.4 |
7.4 |
7 |
6.8 |
7 |
7 |
7 |
DO (mg/l) |
12 |
11 |
10 |
9.9 |
9.8 |
10 |
10 |
11 |
11 |
13 |
12 |
9.9 |
BOD (mg/l) |
1.1 |
0.5 |
1 |
1.6 |
1.1 |
1.3 |
1.1 |
0.7 |
0.6 |
0.7 |
0.6 |
0.5 |
COD (mg/l) |
1.9 |
1.6 |
2.4 |
3.2 |
1.9 |
2.8 |
2 |
1.8 |
1.7 |
1 |
1 |
1.3 |
SS (mg/l) |
4 |
2 |
1 |
5 |
3 |
2 |
1 |
3 |
3 |
2 |
2 |
5 |
大腸菌群数 (MPN/100ml) |
1.7E+02 |
4.9E+02 |
4.9E+02 |
7.9E+03 |
7.9E+03 |
1.7E+03 |
4.9E+02 |
7.9E+02 |
1.1E+03 |
4.9E+02 |
7.9E+02 |
2.4E+02 |
全窒素 (mg/l) |
|
0.26 |
|
0.48 |
|
0.62 |
|
0.28 |
|
0.39 |
|
0.36 |
全燐 (mg/l) |
|
0.017 |
|
0.016 |
|
0.006 |
|
0.007 |
|
0.008 |
|
0.01 |
カドミウム (mg/l) |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
全シアン (mg/l) |
|
N |
|
N |
|
N |
|
N |
|
N |
|
N |
鉛 (mg/l) |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
六価クロム (mg/l) |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
|
< 0.02 |
砒素 (mg/l) |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
総水銀 (mg/l) |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
ふっ素 (mg/l) |
|
|
|
< 0.1 |
|
|
|
< 0.1 |
|
|
|
|
透視度 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
77 |
ほう素 (mg/l) |
|
|
|
< 0.1 |
|
|
|
< 0.1 |
|
|
|
|
硝酸性窒素及び亜硝酸性窒素 (mg/l) |
|
0.23 |
|
0.19 |
|
0.10 |
|
0.22 |
|
0.29 |
|
0.24 |