(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 |
0.018 |
0.011 |
0.004 |
0.006 |
nd |
nd |
nd |
nd |
nd |
0.005 |
nd |
nd |
nd |
0.007 |
nd |
八郎湖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
小名浜港 |
0.009 |
0.007 |
0.009 |
0.006 |
0.008 |
0.009 |
0.005 |
0.01 |
nd |
0.003 |
nd |
0.007 |
0.004 |
0.005 |
nd |
霞ケ浦 |
nd |
nd |
nd |
nd |
0.004 |
0.003 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
市原・姉崎海岸 |
0.045 |
0.051 |
0.042 |
0.017 |
0.011 |
0.016 |
0.003 |
0.003 |
0.003 |
nd |
nd |
nd |
nd |
nd |
nd |
花見川河口 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
隅田川河口 |
0.012 |
0.012 |
0.014 |
0.016 |
0.028 |
0.015 |
0.004 |
0.004 |
0.004 |
0.005 |
0.006 |
0.005 |
0.008 |
0.007 |
0.005 |
多摩川河口 |
0.009 |
0.012 |
0.009 |
0.003 |
nd |
0.015 |
nd |
0.005 |
0.004 |
0.003 |
0.004 |
0.003 |
0.003 |
nd |
0.003 |
横浜港 |
0.027 |
0.033 |
0.046 |
0.018 |
0.003 |
0.018 |
0.012 |
0.008 |
0.006 |
0.004 |
0.004 |
0.004 |
nd |
0.005 |
0.003 |
信濃川河口 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
犀川河口 |
nd |
nd |
0.03 |
0.015 |
nd |
nd |
0.005 |
nd |
0.034 |
0.004 |
nd |
0.005 |
nd |
nd |
nd |
諏訪湖 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
清水港 |
0.003 |
0.007 |
0.008 |
nd |
nd |
nd |
nd |
0.007 |
nd |
nd |
nd |
nd |
0.005 |
0.005 |
nd |
名古屋港 |
0.005 |
0.005 |
0.004 |
0.005 |
0.008 |
0.004 |
0.004 |
0.004 |
0.003 |
0.009 |
nd |
nd |
0.006 |
0.003 |
0.004 |
四日市港 |
0.021 |
- |
- |
0.01 |
0.01 |
0.008 |
0.014 |
0.011 |
0.016 |
0.006 |
0.007 |
0.006 |
0.025 |
0.01 |
0.01 |
琵琶湖南湖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
宮津港 |
0.014 |
0.009 |
0.007 |
0.003 |
nd |
nd |
0.006 |
0.003 |
0.006 |
nd |
nd |
nd |
nd |
nd |
nd |
桂川宮前橋 |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
大和川河口 |
- |
- |
- |
0.005 |
0.005 |
0.007 |
0.022 |
0.024 |
0.007 |
nd |
0.004 |
0.005 |
nd |
nd |
nd |
大阪港 |
0.02 |
0.02 |
0.02 |
0.067 |
0.037 |
0.062 |
0.067 |
0.037 |
0.062 |
0.019 |
0.014 |
0.014 |
0.006 |
0.006 |
0.006 |
姫路沖 |
0.014 |
0.013 |
0.013 |
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
水島沖 |
0.011 |
0.008 |
0.015 |
0.013 |
0.008 |
0.008 |
0.005 |
0.011 |
0.009 |
0.027 |
0.013 |
0.013 |
- |
- |
- |
呉港 |
0.016 |
0.024 |
0.012 |
0.014 |
0.013 |
0.028 |
|
|
|
|
|
|
|
|
|
広島湾 |
|
|
|
|
|
|
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
徳山湾 |
0.005 |
0.004 |
0.005 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
吉野川河口 |
|
|
|
0.012 |
0.004 |
0.004 |
0.083 |
0.084 |
0.08 |
0.044 |
0.047 |
0.049 |
nd |
nd |
nd |
高松港 |
0.025 |
0.027 |
0.023 |
0.034 |
0.048 |
0.024 |
0.014 |
0.0014 |
0.005 |
0.011 |
0.011 |
0.007 |
0.009 |
0.004 |
0.004 |
四万十川河口 |
- |
- |
- |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
大牟田沖 |
0.004 |
0.004 |
0.004 |
0.013 |
0.027 |
0.027 |
- |
- |
- |
nd |
nd |
nd |
0.03 |
nd |
nd |
博多湾 |
0.01 |
0.009 |
0.012 |
0.006 |
0.008 |
0.007 |
0.026 |
0.028 |
0.012 |
0.02 |
0.025 |
0.017 |
0.006 |
0.005 |
0.006 |
洞海湾 |
0.048 |
0.029 |
0.049 |
0.015 |
0.02 |
0.012 |
0.007 |
0.011 |
0.014 |
0.006 |
0.006 |
0.01 |
0.006 |
0.022 |
0.007 |
伊万里湾 |
|
|
|
|
|
|
0.032 |
0.019 |
0.008 |
0.007 |
0.008 |
0.007 |
0.01 |
0.013 |
0.01 |
長崎港 |
0.04 |
0.02 |
0.04 |
0.014 |
0.011 |
0.008 |
0.003 |
0.003 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
大淀川河口 |
0.016 |
0.005 |
0.004 |
0.013 |
0.011 |
0.015 |
0.004 |
nd |
nd |
nd |
0.003 |
nd |
0.003 |
nd |
nd |
五反田川五反田橋 |
nd |
nd |
nd |
0.003 |
0.003 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
統一検出限界値 |
0.003 |
0.003 |
0.003 |
0.003 |
0.003 |
検 出 頻 度 |
62/79 |
60/93 |
52/99 |
42/99 |
35/99 |
最 大 値 |
0.051 |
0.067 |
0.084 |
0.049 |
0.03 |
最 小 値 |
nd |
nd |
nd |
nd |
nd |
幾 何 平 均 |
0.0088 |
0.0057 |
0.0044 |
0.0032 |
0.0029 |
|