平成14年度(2002年度)版 「化学物質と環境」 | |
第4部 平成13年度指定化学物質等検討調査結果 |
表9 環境残留性調査(1,4-ジオキサン) |
番号 | 調査地点 | 水質(μg/L) 統一検出限界値: 0.08 | 底質(ng/g-dry) 統一検出限界値: 10 | ||||||||
検出数 / 検体数 |
検体1 | 検体2 | 検体3 | 検出限界 | 検出数 / 検体数 |
検体1 | 検体2 | 検体3 | 検出限界 | ||
1 | 石狩川河口 | 0/3 | tr(0.01) | nd | nd | 0.08 | 0/3 | nd | nd | nd | 1.1 |
2 | 堤川河口 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | tr(6.2) | nd | 5 |
3 | 仙台湾 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
4 | 八郎湖 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
5 | 小名浜港 | 1/3 | 0.17 | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
6 | 霞ヶ浦 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
7 | 市原・姉崎海岸 | 3/3 | 0.76 | 0.95 | 1.3 | 0.08 | 0/3 | nd | nd | nd | 5 |
8 | 花見川河口 | 3/3 | 0.27 | 0.31 | 0.31 | 0.04 | 3/3 | 26 | 14 | 30 | 5 |
9 | 隅田川河口 | 3/3 | 1.5 | 2.3 | 2.3 | 0.08 | 0/3 | nd | nd | nd | 2.4 |
10 | 横浜港 | 3/3 | 0.36 | 0.29 | 0.33 | 0.08 | 0/3 | nd | nd | nd | 5 |
11 | 信濃川下流 | 3/3 | 0.13 | 0.14 | 0.11 | 0.08 | 0/3 | nd | nd | nd | 1.1 |
12 | 犀川河口 | 3/3 | 1.0 | 1.7 | 1.6 | 0.08 | 0/3 | nd | nd | nd | 1.1 |
13 | 諏訪湖 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 8 |
14 | 清水港 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
15 | 名古屋港 | 3/3 | 2.5 | 2.3 | 2.1 | 0.017 | 0/3 | nd | nd | nd | 0.11 |
16 | 四日市港 | 3/3 | 0.31 | 0.28 | 0.37 | 0.0054 | 0/3 | tr(6.0) | tr(8.0) | tr(6.0) | 0.2 |
17 | 琵琶湖 (唐崎沖中央) |
3/3 | 0.10 | 0.11 | 0.09 | 0.08 | 0/3 | nd | nd | nd | 7.1 |
18 | 日本海 宮津港 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 1.1 |
19 | 桂川宮前橋 | 3/3 | 0.25 | 0.28 | 0.29 | 0.08 | 0/3 | nd | nd | nd | 5 |
20 | 大和川河口 | 3/3 | 8.0 | 6.7 | 4.2 | 0.4 | 0/3 | nd | nd | nd | 10 |
21 | 大阪港 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 1.1 |
22 | 水島沖(玉島) | 3/3 | 0.15 | 0.13 | 0.14 | 0.08 | 0/3 | nd | nd | nd | 1.1 |
23 | 広島湾 | 3/3 | 0.13 | 0.12 | 0.12 | 0.0052 | 0/3 | nd | nd | nd | 0.26 |
24 | 徳山湾 | 3/3 | 0.24 | 0.25 | 0.26 | 0.08 | 0/3 | nd | nd | nd | 2 |
25 | 吉野川河口 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 8 |
26 | 高松港 | 2/3 | nd | 0.27 | 0.19 | 0.08 | 0/3 | nd | nd | nd | 4 |
27 | 四万十川河口 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 2 |
28 | 大牟田沖 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
29 | 博多湾 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 8 |
30 | 洞海湾 | 0/3 | tr(0.07) | tr(0.07) | tr(0.06) | 0.08 | 0/3 | nd | nd | nd | 8 |
31 | 伊万里湾 | 0/3 | nd | nd | nd | 0.019 | 0/3 | nd | nd | nd | 3.5 |
32 | 大淀川河口 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
33 | 五反田川五反田橋 | 0/3 | nd | nd | nd | 0.08 | 0/3 | nd | nd | nd | 5 |
計 | 45/99 | 最大値 | 8.0 | 0.4 | 3/99 | 最大値 | 30 | 10 | |||
最小値 | 0.09 | 0.0052 | 最小値 | 14 | 0.11 | ||||||
幾何平均 | 0.12 | 幾何平均 | 1.6 |
(注)幾何平均は、ndを地点ごとの検出限界値の1/2として算出した。 |