平成14年度(2002年度)版 「化学物質と環境」 | |
第5部 平成13年度有機スズ化合物に関する環境調査結果 |
表7-2 トリブチルスズ化合物に関する底質調査結果 |
(濃度単位:ng/g-dry) |
調 査 地 点 | 平成8年度 | 平成9年度 | 平成10年度 | 平成11年度 | 平成12年度 | 平成13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 | |
石狩川河口 | nd | nd | nd | nd | 1.3 | nd | nd | nd | nd | nd | nd | nd | 1.8 | nd | nd | 7.0 | nd | nd |
堤川河口 | 1.5 | 4.5 | 2.7 | 8.7 | 11 | 11 | 6.7 | 5.5 | 5.5 | 8.3 | 9.1 | 12 | 9.2 | 7.5 | 7.1 | nd | 6.8 | nd |
仙台湾 | 17 | 26 | 21 | 20 | 25 | 13 | 18 | 19 | 19 | 16 | 17 | 17 | 12 | 14 | 15 | 12 | 12 | 13 |
八郎湖 | nd | nd | nd | nd | nd | nd | - | - | - | nd | nd | nd | - | - | - | 0.8 | nd | 0.9 |
小名浜港 | 6.0 | 10 | 5.0 | 59 | 47 | 31 | 20 | 5.5 | 8.3 | 55 | 27 | 49 | 48 | 54 | 32 | 7.9 | 30 | 3.9 |
霞ケ浦 | 5.2 | 3.6 | 3.1 | 3.2 | 3.6 | 2.7 | 5.8 | 4.5 | 4.6 | 5.9 | 8.8 | 4.8 | 4.6 | 5.4 | 4.3 | 3.9 | 3.8 | 3.4 |
市原・姉崎海岸 | 30 | 18 | 64 | 5.0 | 36 | 93 | 120 | 42 | 150 | 96 | 99 | 230 | 90 | 100 | 240 | 200 | 94 | 180 |
花見川河口 | 16 | 20 | 2.3 | - | - | - | 3.6 | 4.0 | 5.1 | - | - | 2.1 | 4.0 | 8.2 | 14 | 19 | 28 | 23 |
隅田川河口 | 250 | 170 | 260 | 240 | 210 | 230 | 180 | 160 | 180 | 190 | 300 | 120 | 100 | 90 | 220 | 58 | 21 | 120 |
多摩川河口 | 110 | 110 | 120 | 95 | 99 | 97 | 100 | 110 | 110 | 47 | 67 | 93 | - | - | - | - | - | - |
横浜港 | 51 | 91 | 73 | 96 | 100 | 74 | 220 | 180 | 130 | 150 | 270 | 140 | 150 | 200 | 99 | 140 | 190 | 160 |
信濃川河口 | 7.1 | 13 | 15 | 13 | 11 | 13 | 170 | 240 | 130 | 2.4 | 1.0 | nd | nd | nd | nd | nd | nd | nd |
犀川河口 | 16 | 29 | 48 | 4.4 | 11 | 10 | 6.9 | 8.5 | nd | - | 18 | - | 3.3 | 6.0 | 2.6 | 5.0 | 69 | nd |
諏訪湖 | 5.1 | 6.9 | 6.8 | 4.5 | 5.7 | 4.5 | 5.0 | 5.0 | 6.0 | 3.1 | 4.9 | 3.5 | 2.7 | 4.0 | 3.0 | 3.3 | 2.9 | 3.0 |
清水港 | 8.9 | 8.3 | 6.7 | 11 | 14 | 12 | 20 | 5.0 | 11 | 42 | 23 | 28 | 27 | 18 | 18 | 20 | 16 | 15 |
名古屋港 | 930 | 230 | 210 | 170 | 150 | 130 | 730 | 390 | 65 | 34 | 20 | 26 | 11 | 15 | 40 | 7.8 | 6.5 | 8.5 |
四日市港 | 19 | 45 | 6.4 | 2.2 | 49 | 17 | 25 | 44 | 17 | 17 | 17 | 10 | 31 | 24 | 28 | 18 | 22 | 55 |
琵琶湖南湖 | 11 | 8.6 | 14 | 7.5 | 8.9 | 9.0 | 8.6 | 15 | 20 | 4.4 | 16 | 6.6 | 4.8 | 3.7 | 4.1 | 1.2 | 4.9 | 5.2 |
宮津港 | 1.5 | 1.0 | 0.7 | nd | nd | nd | 8.2 | 2.8 | 9.2 | 0.95 | 0.96 | 1.5 | nd | nd | nd | nd | 1.2 | 3.4 |
桂川宮前橋 | nd | nd | nd | nd | nd | nd | 0.8 | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd |
大和川河口 | 25 | 15 | 46 | 9.0 | 12 | 21 | nd | nd | nd | 4.0 | 2.0 | 2.0 | - | - | - | - | - | - |
大阪港 | 220 | 270 | 210 | 180 | 180 | 210 | 120 | 66 | 36 | 17 | 35 | 73 | 27 | 69 | 72 | 210 | 46 | 150 |
姫路沖 | 2.0 | 1.0 | 5.0 | 4.0 | 4.0 | 3.0 | nd | nd | nd | 26 | 20 | 18 | 8.0 | 12 | 10 | 24 | 17 | 13 |
水島沖 | 14 | 12 | 13 | 16 | 15 | 13 | 13 | 17 | 13 | 15 | 16 | 16 | 16 | 19 | 16 | 8.0 | 8.4 | 8.9 |
呉港 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
広島湾 | 38 | 31 | 41 | 25 | 29 | 22 | 35 | 69 | 50 | 45 | 54 | 62 | 72 | 33 | 44 | 150 | 180 | 85 |
徳山湾 | 10 | 5.4 | 15 | 31 | 26 | 26 | 16 | 16 | 20 | 47 | 25 | 25 | 15 | 20 | 22 | 14 | 22 | 16 |
吉野川河口 | 0.9 | 1.0 | 2.9 | 4.5 | nd | nd | tr(0.7) | 0.8 | 3.9 | nd | nd | nd | nd | 1.0 | tr(0.17) | 0.8 | 1.8 | 1.6 |
高松港 | 29 | 12 | 18 | 66 | 20 | 34 | 100 | 51 | 54 | 100 | 59 | 48 | 29 | 53 | 35 | 76 | 15 | 56 |
四万十川河口 | 0.7 | 6.6 | 6.4 | 0.8 | 0.8 | tr(0.1) | 2.8 | 2.1 | 1.7 | 4 | 30 | - | 18 | 12 | 71 | 8.3 | 6.3 | 5.8 |
大牟田沖 | 16 | 16 | 12 | 18 | 45 | 8.1 | 10 | 7.4 | 6.9 | 3.2 | 6.9 | 6.7 | 8.8 | 5.3 | 5.7 | 10 | 3.9 | 4.7 |
博多湾 | 6.3 | 6.4 | 7.0 | 1.8 | 1.5 | 1.3 | 14 | 46 | 21 | 17 | 25 | 18 | 13 | 18 | 15 | 14 | 12 | 12 |
洞海湾 | 170 | 190 | 55 | 82 | 56 | 72 | 51 | 170 | 92 | 79 | 110 | 130 | 88 | 40 | 68 | 100 | 52 | 58 |
伊万里湾 | 127 | 157 | 238 | 98 | 99 | 79 | 41 | 100 | 100 | 87 | 200 | 450 | 53 | 41 | 40 | 76 | 27 | 100 |
長崎港 | 57 | 23 | 34 | 25 | 21 | 28 | 92 | 93 | 90 | 89 | 31 | 130 | 73 | 160 | 150 | 73 | 44 | 39 |
大淀川河口 | 0.7 | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | 5.1 | nd | nd | nd | nd | nd | nd |
五反田川五反田橋 | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | nd | 0.9 | tr(0.7) | nd | nd |
統一検出限界値 | 0.6 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | ||||||||||||
検 出 頻 度 | 94/108 | 85/105 | 86/105 | 85/103 | 81/99 | 83/102 | ||||||||||||
最大値 | 930 | 240 | 730 | 450 | 240 | 210 | ||||||||||||
最小値 | nd | nd | nd | nd | nd | nd | ||||||||||||
幾 何 平 均 | 11 | 9.0 | 13 | 11 | 10 | 9.4 |
(注) | 1 TBTO換算値 |
2 ndは不検出、"-"は欠測または未調査。 | |
3 幾何平均値はndを各地点の検出限界値の1/2として算出した。 |