(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 |
nd |
nd |
nd |
nd |
nd |
nd |
堤川河口 |
|
|
|
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
仙台湾 |
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 |
0.005 |
nd |
0.005 |
0.004 |
0.004 |
- |
- |
- |
tr(0.0012) |
tr(0.0012) |
tr(0.0014) |
霞ケ浦 |
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 |
tr(0.0013) |
nd |
tr(0.00037) |
tr(0.0017) |
tr(0.0013) |
tr(0.0004) |
花見川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
隅田川河口 |
0.005 |
0.005 |
0.006 |
0.005 |
0.004 |
0.004 |
0.006 |
0.008 |
0.006 |
0.0060 |
0.0066 |
0.0064 |
0.0041 |
0.0033 |
0.0041 |
多摩川河口 |
0.003 |
0.003 |
nd |
0.003 |
nd |
nd |
nd |
nd |
nd |
0.0046 |
0.0038 |
0.0045 |
0.0031 |
0.0032 |
tr(0.0028) |
横浜港 |
0.004 |
0.003 |
nd |
0.004 |
nd |
0.003 |
0.004 |
nd |
nd |
0.0043 |
0.0063 |
0.0051 |
nd |
nd |
nd |
信濃川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.0026) |
0.0039 |
tr(0.002) |
犀川河口 |
0.005 |
nd |
0.01 |
nd |
nd |
nd |
nd |
0.009 |
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 |
0.005 |
nd |
nd |
nd |
nd |
0.004 |
0.005 |
- |
- |
nd |
nd |
nd |
名古屋港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
四日市港 |
0.006 |
nd |
0.008 |
0.003 |
0.004 |
nd |
tr(0.002) |
nd |
nd |
nd |
nd |
nd |
tr(0.00083) |
tr(0.00088) |
tr(0.00062) |
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 |
大和川河口 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
- |
- |
- |
大阪港 |
0.01 |
0.011 |
0.013 |
0.008 |
0.011 |
0.008 |
0.006 |
0.007 |
0.006 |
0.0032 |
0.0031 |
0.0031 |
0.0048 |
0.0051 |
0.0037 |
姫路沖 |
0.042 |
0.016 |
0.018 |
nd |
0.005 |
0.009 |
nd |
0.005 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
水島沖 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.0011) |
tr(0.0010) |
tr(0.0010) |
呉港 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
広島湾 |
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 |
0.003 |
nd |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
高松港 |
0.004 |
0.004 |
0.006 |
0.012 |
0.014 |
0.003 |
nd |
0.007 |
0.003 |
0.0038 |
0.0067 |
tr(0.0021) |
0.0078 |
0.0098 |
0.0042 |
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 |
0.04 |
0.01 |
0.01 |
0.004 |
0.003 |
0.004 |
nd |
nd |
nd |
tr(0.00096) |
tr(0.00063) |
tr(0.00059) |
tr(0.0010) |
tr(0.0012) |
tr(0.00049) |
博多湾 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
tr(0.0019) |
tr(0.0018) |
tr(0.0016) |
0.0043 |
tr(0.00086) |
tr(0.0016) |
洞海湾 |
0.017 |
0.013 |
0.018 |
0.006 |
0.005 |
0.01 |
0.0051 |
0.005 |
0.0051 |
tr(0.0025) |
tr(0.0021) |
0.0080 |
tr(0.0017) |
tr(0.0014) |
tr(0.0017) |
伊万里湾 |
0.007 |
0.005 |
0.005 |
- |
- |
- |
0.004 |
0.004 |
- |
tr(0.0025) |
0.0033 |
tr(0.0021) |
tr(0.0021) |
tr(0.0020) |
nd |
長崎港 |
nd |
nd |
0.003 |
nd |
nd |
nd |
nd |
nd |
nd |
0.0068 |
0.0060 |
0.0064 |
0.0053 |
tr(0.0018) |
0.0079 |
大淀川河口 |
0.013 |
nd |
nd |
0.006 |
0.003 |
nd |
0.005 |
nd |
nd |
- |
- |
- |
nd |
0.003 |
nd |
五反田川五反田橋 |
nd |
nd |
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 |
31/105 |
27/105 |
21/107 |
20/76 |
16/105 |
最 大 値 |
0.042 |
0.014 |
0.009 |
0.0080 |
0.0098 |
最 小 値 |
nd |
nd |
nd |
nd |
nd |
幾 何 平 均 |
0.0025 |
0.0021 |
0.0019 |
0.0010 |
0.0011 |
|