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表11 トリフェニルスズ化合物に関する底質調査結果(平成2年度~8年度指定化学物質等検討調査より)
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 |
平成7年度 |
平成8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 |
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 |
nd |
nd |
nd |
nd |
nd |
nd |
堤川河口 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
nd |
tr(0.3) |
nd |
八郎湖 |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
仙台湾 |
4 |
4 |
3 |
1 |
2 |
2 |
5 |
5 |
9 |
3 |
5 |
3 |
6 |
- |
- |
- |
- |
- |
3 |
3 |
3 |
小名浜港 |
6 |
45 |
66 |
11 |
17 |
11 |
nd |
nd |
nd |
1 |
1 |
1 |
4 |
3 |
nd |
1 |
1 |
nd |
nd |
nd |
nd |
霞ケ浦 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
市原・姉崎海岸 |
19 |
30 |
8.5 |
18 |
7 |
3 |
21 |
8 |
35 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
3 |
花見川河口 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
- |
- |
2.8 |
- |
- |
- |
隅田川河口 |
12 |
15 |
38 |
2.5 |
4.8 |
1.9 |
3.4 |
3.9 |
2.5 |
3.2 |
3.2 |
3.2 |
6.8 |
6.7 |
5.9 |
2.7 |
3.9 |
2.9 |
4.5 |
4.4 |
3.5 |
東京湾中瀬 |
11 |
19 |
15 |
3 |
4 |
5.2 |
14 |
18 |
16 |
6.7 |
5.8 |
6.6 |
2.6 |
3.1 |
4.1 |
3 |
2.7 |
2.3 |
4.2 |
3.9 |
4.5 |
横浜港 |
31 |
39 |
38 |
40 |
87 |
32 |
7 |
3 |
9 |
18 |
24 |
9 |
10 |
18 |
12 |
13 |
14 |
7 |
220 |
28 |
14 |
信濃川河口 |
3 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
2.6 |
nd |
nd |
2.6 |
nd |
1.2 |
1 |
1 |
諏訪湖 |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
犀川河口 |
3.1 |
nd |
7 |
nd |
nd |
1.4 |
5.6 |
nd |
nd |
nd |
0.9 |
2.7 |
nd |
nd |
2.1 |
nd |
nd |
nd |
nd |
nd |
nd |
清水港 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
1 |
1 |
1 |
2 |
1 |
2 |
1.2 |
tr(0.8) |
1.6 |
tr(0.7) |
tr(0.9) |
tr(0.7) |
名古屋港 |
11 |
1 |
16 |
6 |
nd |
2 |
10 |
6 |
1 |
2 |
3 |
4 |
nd |
6 |
nd |
4.6 |
6.5 |
3.8 |
13 |
27 |
19 |
四日市港 |
22 |
7 |
5 |
9.9 |
13 |
8 |
24 |
13 |
16 |
8.1 |
7 |
7.1 |
4.2 |
19 |
- |
15 |
nd |
nd |
3.5 |
23 |
nd |
琵琶湖南湖 |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
- |
nd |
nd |
nd |
宮津港 |
nd |
nd |
nd |
4.8 |
nd |
nd |
1.9 |
1.6 |
1.8 |
nd |
nd |
nd |
nd |
4.1 |
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 |
nd |
nd |
nd |
nd |
nd |
nd |
大和川河口 |
- |
- |
- |
7 |
10 |
10 |
- |
- |
- |
3 |
4 |
2 |
- |
- |
- |
4 |
6 |
6 |
- |
- |
- |
大阪港 |
130 |
94 |
110 |
nd |
340 |
130 |
25 |
13 |
13 |
52 |
66 |
54 |
72 |
13 |
11 |
- |
- |
- |
- |
- |
- |
姫路沖 |
11 |
18 |
24 |
2.9 |
8.7 |
8.4 |
1 |
nd |
1 |
- |
- |
- |
- |
- |
- |
nd |
nd |
nd |
nd |
nd |
nd |
水島沖 |
21 |
28 |
58 |
22 |
12 |
50 |
5.1 |
4.3 |
3.9 |
0.9 |
1.6 |
0.6 |
2.1 |
1.5 |
nd |
1.7 |
2.3 |
- |
nd |
nd |
nd |
呉港 |
38 |
67 |
41 |
38 |
49 |
65 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
広島湾 |
|
|
|
|
|
|
11 |
28 |
10 |
10 |
7.4 |
7.6 |
16 |
9.8 |
11 |
13 |
32 |
16 |
8 |
33 |
6 |
徳山湾 |
1 |
tr(0.8) |
tr(0.8) |
tr(0.5) |
tr(0.6) |
tr(0.5) |
1.9 |
1 |
1 |
1.9 |
1.2 |
1.5 |
2.6 |
1.1 |
1.5 |
1.8 |
1.2 |
1.5 |
nd |
nd |
nd |
吉野川河口 |
|
|
|
nd |
nd |
nd |
nd |
nd |
1 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
高松港 |
41 |
9.1 |
4.5 |
3.6 |
2.3 |
1 |
8.5 |
3.2 |
1.2 |
2.9 |
1.8 |
0.7 |
5.6 |
3.1 |
6.1 |
7.8 |
3 |
nd |
1.6 |
7.4 |
2.6 |
四万十川河口 |
nd |
nd |
nd |
- |
- |
- |
nd |
nd |
1 |
nd |
nd |
nd |
tr(0.8) |
nd |
13 |
12.4 |
nd |
tr(0.8) |
nd |
nd |
nd |
洞海湾 |
56 |
77 |
99 |
19 |
160 |
60 |
90 |
33 |
- |
150 |
52 |
22 |
260 |
120 |
40 |
67 |
11 |
4.4 |
43 |
18 |
8 |
博多湾 |
3.5 |
3.2 |
2.8 |
11 |
14 |
8.3 |
3.1 |
3.3 |
2.6 |
4 |
3.3 |
4.4 |
1.3 |
1.3 |
1.2 |
1.3 |
1.3 |
2.6 |
1.4 |
1.5 |
1.2 |
大牟田沖 |
- |
- |
- |
1.6 |
- |
12 |
11 |
23 |
nd |
1 |
12 |
4 |
- |
- |
13 |
19 |
28 |
110 |
1 |
nd |
3 |
伊万里湾 |
|
|
|
|
|
|
8.9 |
5.9 |
3.3 |
8.6 |
16 |
4.9 |
9.9 |
15 |
5 |
3 |
3 |
3 |
10 |
6 |
7 |
長崎港 |
28 |
10 |
7 |
26 |
9 |
12 |
2.2 |
2.3 |
9.7 |
10 |
7.9 |
5.1 |
tr(0.9) |
tr(0.9) |
tr(0.5) |
5.3 |
3.8 |
13 |
22 |
10 |
11 |
大淀川河口 |
nd |
nd |
nd |
nd |
nd |
1 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
1 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
五反田川五反田橋 |
nd |
nd |
nd |
2 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
統一検出限界値 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
検 出 頻 度 |
52/81 |
55/89 |
57/95 |
59/96 |
47/88 |
48/93 |
41/99 |
最 大 値 |
130 |
340 |
90 |
150 |
260 |
110 |
220 |
最 小 値 |
nd |
nd |
nd |
nd |
nd |
nd |
nd |
幾 何 平 均 |
4.8 |
3.3 |
2.3 |
1.8 |
2.2 |
1.7 |
1.4 |
注1 : TPTCl換算値
注2 : ndは不検出,”-”は欠測,空欄部分では調査を行っていない。
注3 : 幾何平均値は,ndを,各地点ごとの検出限界値の 1/2として算出した。