(単位:μg/l)
| 調 査 地 点 |
平成7年度 |
平成8年度 |
平成9年度 |
平成10年度 |
平成11年度 |
| 検体1 |
検体2 |
検体3 |
検体1 |
検体2 |
検体3 |
検体1 |
検体2 |
検体3 |
検体1 |
検体2 |
検体3 |
検体1 |
検体2 |
検体3 |
| 石狩川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
- |
- |
- |
| 堤川河口 |
|
|
|
tr(0.009) |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 仙台湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 八郎湖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 小名浜港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.00023) |
tr(0.00023) |
tr(0.00024) |
| 霞ケ浦 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 市原・姉崎海岸 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 花見川河口 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
| 隅田川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 多摩川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 横浜港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.0006) |
tr(0.0006) |
tr(0.0007) |
nd |
nd |
nd |
| 信濃川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 犀川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 諏訪湖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 清水港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 名古屋港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 四日市港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 琵琶湖南湖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 宮津港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 桂川宮前橋 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 大和川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 大阪港 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 姫路沖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 水島沖 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.00018) |
tr(0.00020) |
tr(0.00019) |
| 呉港 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| 広島湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 徳山湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 吉野川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 高松港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.00083) |
0.0015 |
tr(0.00030) |
nd |
tr(0.00025) |
tr(0.00057) |
| 四万十川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 大牟田沖 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 博多湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.00046) |
tr(0.00055) |
tr(0.00055) |
nd |
nd |
nd |
| 洞海湾 |
- |
- |
- |
nd |
nd |
nd |
tr(0.0007) |
tr(0.0006) |
tr(0.0007) |
0.0010 |
0.0012 |
tr(0.00090) |
tr(0.00053) |
tr(0.00047) |
tr(0.00055) |
| 伊万里湾 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 長崎港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.00060) |
tr(0.00060) |
0.0010 |
0.0032 |
0.0012 |
0.0040 |
| 大淀川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 五反田川五反田橋 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
| 統一検出限界値 |
0.005 |
0.01 |
0.01 |
0.001 |
0.001 |
| 検 出 頻 度 |
0/87 |
0/108 |
0/108 |
4/102 |
3/105 |
| 最 大 値 |
nd |
tr |
tr |
0.0015 |
0.0040 |
| 最 小 値 |
nd |
nd |
nd |
nd |
nd |
| 幾 何 平 均 |
0.0025 |
0.0027 |
0.0026 |
0.0003 |
0.0003 |
|