(単位:μg/l)
調 査 地 点 |
平成2年度 |
平成3年度 |
平成4年度 |
平成5年度 |
平成6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 |
nd |
nd |
nd |
堤川河口 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
仙台湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
0.011 |
0.005 |
0.01 |
nd |
八郎湖 |
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 |
nd |
nd |
nd |
霞ケ浦 |
- |
- |
- |
nd |
0.013 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
市原・姉崎海岸 |
0.006 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
花見川河口 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
0.014 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
横浜港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
信濃川河口 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
犀川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
0.007 |
nd |
nd |
nd |
nd |
nd |
nd |
諏訪湖 |
- |
- |
- |
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 |
名古屋港 |
0.005 |
0.006 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
四日市港 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
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 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
姫路沖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
- |
- |
- |
水島沖 |
0.012 |
0.014 |
0.014 |
nd |
nd |
nd |
0.006 |
0.008 |
0.007 |
0.008 |
nd |
nd |
nd |
nd |
nd |
呉港 |
nd |
nd |
nd |
nd |
nd |
nd |
|
|
|
|
|
|
|
|
|
広島湾 |
|
|
|
|
|
|
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
徳山湾 |
0.005 |
0.005 |
0.005 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
吉野川河口 |
|
|
|
nd |
nd |
nd |
0.04 |
0.044 |
0.016 |
nd |
nd |
nd |
nd |
nd |
nd |
高松港 |
nd |
0.014 |
0.01 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
四万十川河口 |
- |
- |
- |
- |
- |
- |
0.005 |
0.013 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
大牟田沖 |
nd |
nd |
nd |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
博多湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
洞海湾 |
0.047 |
0.041 |
0.048 |
0.0076 |
0.0088 |
nd |
- |
- |
- |
nd |
nd |
nd |
0.006 |
0.007 |
- |
伊万里湾 |
|
|
|
|
|
|
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
長崎港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
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 |
0.01 |
0.02 |
nd |
nd |
nd |
nd |
0.006 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
統一検出限界値 |
0.005 |
0.005 |
0.005 |
0.005 |
0.005 |
検 出 頻 度 |
16/75 |
4/87 |
10/90 |
2/90 |
4/92 |
最 大 値 |
0.048 |
0.014 |
0.044 |
0.011 |
0.01 |
最 小 値 |
nd |
nd |
nd |
nd |
nd |
幾 何 平 均 |
0.0034 |
0.0027 |
0.0030 |
0.0026 |
0.0026 |
|