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第 22 回環境化学討論会
➨ 22 ᅇ⎔ቃᏛウㄽ䠈☾㈅┤⨾䠈ཱྀ㢌Ⓨ⾲䠄ᮾி䠗2013 ᖺ䠅㻌 㻟㻙㻝㻭㻙㻣㻙㻠㻌 すࣇࣜ࢝࠾ࡅࡿ᭷ᶵሷ⣲⣔㎰⸆ࡢẼ୰ືែ ☾ۑ㈅┤⨾ 1㸪Jonathan N. Hogarh2㸪Ύᐙఙᗣ 3㸪ᑠཎ⿱୕ 3㸪┈Ọⱱᶞ 1 㸦1 ᶓᅜ❧ᏛᏛ㝔⎔ቃሗ◊✲㝔࣭Ꮫᗓ㸪2 ࢡ࣓࢚࣡ࣥࢡ࣐ࣝ⛉Ꮫᢏ⾡Ꮫ㸪3 ㎰ ᴗ⎔ቃᢏ⾡◊✲ᡤ㸧 ࠙ࡣࡌࡵࠚ ṧ␃ᛶࡢ᭷ᶵሷ⣲⣔㎰⸆㸦OCPs㸧ࡣࠊẼ⤒⏤࡛㍺㏦ࡉࢀࠊ⌫ⓗ࡞ởᰁࡢᗈࡀࡾࡀᣦࡉࢀ࡚ࡁ ࡓࠋࡑࡇ࡛ࠊᅜ㝿ⓗ༠ㄪࡋ࡚ OCPs ࢆྵࡴṧ␃ᛶ᭷ᶵởᰁ≀㉁㸦Persistent Organic Pollutants, POPs㸧ࡢ๐ῶࠊᗫ⤯ࢆ┠ᣦࡍࠕṧ␃ᛶ᭷ᶵởᰁ≀㉁㛵ࡍࡿࢫࢺࢵࢡ࣒࣍ࣝ᮲⣙ࠖࡀ 2004 ᖺ 5 ᭶ Ⓨຠࡋࡓࠋ⌧ᅾࠊOCPs ࡢ₯ᅾⓗ࡞Ⓨ⏕㉳※ࡋ࡚ࠊ⇕ᖏᆅᇦࡸள⇕ᖏᆅᇦ⨨ࡍࡿⓎᒎ㏵ୖᅜࡀ ὀ┠ࡉࢀ࡚࠸ࡿࠋࡋࡋ㏵ୖᅜ࡛ࡣᚤ㔞ởᰁࡢศᯒタഛࡀ㠀ᖖ㝈ࡽࢀ࡚࠸ࡿࡓࡵࠊࡇࢀࡲ࡛ OCPs ࡢ ᐃࡶ㝈ࡽࢀࡓࡶࡢ࡞ࡗ࡚࠸ࡿࠋࡑࡇ࡛ࠊ₇⪅ࡽࡣ㧗౯࡞᥇ྲྀ⨨ࡸ㟁ຊࢆᚲせࡋ࡞࠸ࣃࢵ ࢩࣈ࣭ࢧࣥࣉ࣮ࣛࢆ⏝࠸࡚ࠊすࣇࣜ࢝ 5 ࣨᅜ㸦࣮࢞ࢼඹᅜࠊࢺ࣮ࢦඹᅜࠊࢼࢪ࢙ࣜ㐃㑥ඹ ᅜࠊ࣓࣮࢝ࣝࣥඹᅜࠊ࣋ࢼࣥඹᅜ㸧࠾ࡅࡿẼࢆᤕ㞟ࡋࠊOCPs ࡢởᰁᣑᩓࡢᐇែᢕᥱࢆヨ ࡳࡓࠋ ࠙᪉ἲࠚ 2010 ᖺ 2012 ᖺすࣇࣜ࢝ᆅᇦ㸦࣮࢞ࢼ 6 ᆅⅬࠊࢼࢪ࢙ࣜ 5 ᆅⅬࠊ࣋ࢼࣥ 5 ᆅⅬࠊ࣓࢝ࣝ ࣮ࣥ 7 ᆅⅬࠊࢺ࣮ࢦ 5 ᆅⅬ㸧 㸦Fig. 1㸧࡛ PUF ࢹࢫࢡ㸦Φ14013 mmࠊ⾲㠃✚ 367 cm2ࠊᐦᗘ 0.03 g/cm3㸧ࢆሸࡋࡓࣃࢵࢩࣈ࣭ࢧࣥࣉ࣮ࣛࢆ⏝࠸࡚ࠊẼ୰ࡢ OCPs ࢆྛᆅⅬ⣙ 55 ᪥ࡎࡘࢧࣥࣉࣜࣥ ࢢࡋࡓࠋࢧࣥࣉࣜࣥࢢᮇࡣࠊ࣮࢞ࢼ࣭࣋ࢼ࣭ࣥࢺ࣮ࢦ࡛ࡣ㞵Ꮨࠊࢼࢪ࢙࡛ࣜࡣᏘࠊ࣓࣮࢝ࣝ ࡛ࣥࡣ㞵ᏘᏘ୧ᮇ࡛࠶ࡿࠋᮏ◊✲࡛ᑐ㇟ࡋࡓ≀㉁ࡣࠊ࣊࢟ࢧࢡࣟࣟ࣋ࣥࢮࣥ㸦HCB㸧 ࠊ࣊࢟ࢧ ࢡࣟࣟࢩࢡࣟ࣊࢟ࢧࣥ㸦HCHs㸸α-HCH, β-HCH, γ-HCH㸧 ࠊ࣊ࣉࢱࢡࣟࣝ㢮㸦HPCLs㸸࣊ࣉࢱࢡࣟࣝࠊ ࣊ࣉࢱࢡ࢚࣏ࣟࣝ࢟ࢩࢻ㸧ࠊࢡࣟࣝࢹࣥ㛵㐃ྜ≀㸦CHLs㸸cis-ࢡࣟࣝࢹࣥࠊtrans-ࢡࣟࣝࢹࣥࠊcis- ࠊDDT 㛵㐃ྜ≀㹙ѷDDTs㸸p,p’-DDT, o,p’-DDT ࣀࢼࢡࣟࣝࠊtrans-ࣀࢼࢡࣟࣝࠊ࢜࢟ࢩࢡࣟࣝࢹࣥ㸧 (௨ୖࠊDDTs); p,p’-DDD, o,p’-DDD (௨ୖࠊDDDs); p,p’-DDE, o,p’-DDE (௨ୖࠊDDEs)㹛 ࠊࢻࣜࣥ㢮 㸦Drins㸸ࣝࢻࣜࣥࠊࢹࣝࢻࣜࣥࠊ࢚ࣥࢻࣜࣥ㸧ࠊ࣐ࣞࢵࢡࢫ㸦Mirex㸧ࠊ࢚ࣥࢻࢧࣝࣇࣥ㢮 㸦ENDs㸸࢚ࣥࢻࢧࣝࣇࣥϨࠊ࢚ࣥࢻࢧࣝࣇࣥϩࠊ࢚ࣥࢻࢧࣝࣇࣥࢧࣝࣇ࢙࣮ࢺ㸧࡛࠶ࡿࠋࢧࣥ ࣉࣜࣥࢢᚋࡢ PUF ࡣࠊࢭࢺࣥ 300 mL ࡛ 24 㛫ࢯࢵࢡࢫ࣮ࣞᢳฟࡋࡓࠋࢡ࣮ࣜࣥࢵࣉࢫࣃࢡ ࡋ࡚ 13C ࡲࡓࡣ㔜Ỉ⣲ࣛ࣋ࣝయࢆῧຍᚋࠊࣇࣟࣜࢪ࣒ࣝ࢝ࣛࠊࢢࣛࣇࢺ࣮࣒࢝࣎ࣥ࢝ࣛࡼ ࡾ ⢭ 〇 ࠊ ศ ⏬ ࢆ ⾜ ࡗ ࡓ ࠋ ᐃ ࡣ ENV8-MS 㸦 㛵 ᮾ Ꮫ 〇 㸧 ࢆ ሸ ࡋ ࡓ HRGC/HRMS 㸦HP6890-AutoSpec-Ultima Micromass ♫〇㸧ࢆ⏝࠸ SIM ἲ࡛⾜ࡗࡓࠋࡲࡓࣃࢵࢩࣈ࣭ࢧࣥࣉ࣮ࣛ Atmospheric Behavior of Organochlorine Pesticides in Western Africa Nahomi ISOGAI 1, Jonathan N. Hogarh 2, Nobuyasu SEIKE 3, Yuso KOBARA 3, Shigeki MASUNAGA 1 1 Faculty and Graduate School of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama 240-8501 2 Kwame Nkrumah University of Science and Technology, Kumasi, Ghana 3 National Institute for Agro-Environmental Sciences, 3-1-3 Kannondai, Tsukuba 305-8604 144 145