⤥Ἔ᫬ࡢ࢞ࢯࣜࣥ⵨Ⓨ࢞ࢫᡂศཬࡧ࢞ࢯࣜࣥ஌⏝㌴࠿ࡽࡢ
92& ᤼ฟ㔞᥎ᐃ࡟ࡘ࠸࡚ᶓ⏣ஂྖ ୖ㔝ᗈ⾜ ▼஭ᗣ୍㑻 ෆ⏣ᝆኴ ⛅ᒣ⸅せ  ᪨ ⮬ື㌴࡬ࡢ⤥Ἔ᫬࡟᤼ฟࡉࢀࡿ࢞ࢯࣜࣥ⵨Ⓨ࢞ࢫࡢᡂศཬࡧ᤼ฟཎ༢఩ࢆㄪᰝࡍࡿ࡜࡜ࡶ࡟ࠊ㒔ෆ⤥Ἔᡤ࠿ࡽࡢ࢞ࢯࣜࣥ⵨Ⓨ࢞ࢫ᤼ฟ㔞ࢆ᥎ィࡋࡓࠋ⵨Ⓨ࢞ࢫࡢ୺࡞ᡂศࡢྵ᭷⋡㸦㔜㔞㸣㸧ࡣࠊ࢖ࢯ࣌ࣥࢱࣥ 27 㸣ࠊn-ࣈࢱࣥ 16 㸣ࠊ࢖ࢯࣈࢱࣥ 13 㸣ࠊn-࣌ࣥࢱࣥ 8 㸣⛬ᗘ࡛࠶ࡾࠊ࢚ࢳࣝࢱ࣮ࢩ࣮ࣕࣜࣈࢳ࢚࣮ࣝࢸࣝࡣ⣙ 1.3 㸣࡛࠶ࡗࡓࠋ⤥Ἔ㔞ᙜࡓࡾࡢ⵨Ⓨ࢞ࢫ᤼ฟಀᩘࡣ
J/࡛ࠊᮾி㒔ෆࡢ⤥Ἔᡤ࠿ࡽ᤼ฟࡉࢀࡿ⵨Ⓨ࢞ࢫࡢྜィ᤼ฟ㔞ࡣ10,032 ࢺࣥ/ᖺ࡜᥎ᐃࡉࢀࡓࠋࡲࡓࠊࡇࢀࡲ࡛3575ᑐ㇟ࡢ≀㉁ࡢࡳ࡛࠶ࡗࡓ᤼ฟಀᩘࢆ⵨Ⓨ࢞ࢫࡢ࡯࡜ࢇ࡝ࡢᡂศ࡟ࡘ࠸࡚ồࡵࠊᡂศู⵨Ⓨ࢞ࢫ᤼ฟ㔞ࢆ᥎ィࡋࡓࠋ࣮࣮࢟࣡ࢻ㸸࢞ࢯࣜࣥࠊ⤥Ἔࠊ⵨Ⓨ࢞ࢫࠊ᤼ฟಀᩘࠊ᤼ฟ㔞

Characteristics of Gasoline Evaporation Composition and VOCs Emission
Estimates from Gasoline Passenger Cars at Refueling
YOKOTA Hisashi, UENO Hiroyuki, ISHII Koichiro, UCHIDA Yuta, AKIYAMA Kaoru

SummaryThis paper describes characteristics of gasoline evaporation composition and estimates VOCs emission from gas stations in Tokyo. The main
evaporation gas compositions were iso-Pentane 27 wt%, n-Butane 16 wt%, iso-Butane 13 wt%, n-Pentane 8 wt%, and Ethyl tert-butyl ether
1.3 wt% , respectively. The evaporation gas emission factor was 1.44 g / L. The amount of the total exhaust of the evaporative emission
exhausted from the gas stations in Tokyo was estimated to be 10,032 tons/year. In addition, the emission factors of the evaporative emission
which had been calculated about only the five PRTR substances were newly estimated about most substances, and the amounts of theexhaust of the evaporative emission according to the substances was estimated.

Key Words㸸 VOCs; Gasoline evaporation; gasoline passenger cars ; evaporation gas emission factor 㸯 ࡣࡌࡵ࡟⾲ 㻝 ౪ヨ⇞ᩱᛶ≧ ኱Ẽ୰ࡢVOCࡣࠊග໬Ꮫ࢜࢟ࢩࢲࣥࢺཬࡧᾋ㐟⢏Ꮚ≧≀䝃䞁䝥䝹ྡ㻿㻭㻼㻿㻭㻾㻿㻮㻼㻿㻮㻾㻿㻯㻼㻿㻯㻾㼃㻭㻼㼃㻭㻾㼃㻮㻼㼃㻮㻾㼃㻯㻼㼃㻯㻾᥇ྲྀ᫬ᮇኟᏘኟᏘኟᏘኟᏘኟᏘኟᏘ෤Ꮨ෤Ꮨ෤Ꮨ෤Ꮨ෤Ꮨ෤Ꮨ᥇ྲྀ䛧䛯ඖ኎㻭♫㻭♫㻮♫㻮♫䠟♫䠟♫㻭♫㻭♫㻮♫㻮♫䠟♫䠟♫㻖㻝㻼㻾㻼㻾㻼㻾㻼㻾㻼㻾㻼㻾ᐦᗘ㻔㼓㻛㼏㼙 㻕㻟㻜㻚㻣㻢㻜㻚㻣㻡㻜㻚㻣㻢㻜㻚㻣㻠㻜㻚㻣㻢㻜㻚㻣㻟㻜㻚㻣㻡㻜㻚㻣㻝㻜㻚㻣㻡㻜㻚㻣㻟㻜㻚㻣㻢㻜㻚㻣㻞䝸䞊䝗⵨Ẽᅽ㻔㼗㻼㼍㻕㻤㻟㉁➼ࡢ஧ḟ⏕ᡂ⢏Ꮚࡢཎᅉ≀㉁࡜ࡉࢀ࡚࠾ࡾࠊᖹᡂ18ᖺ4᭶࠿ࡽࡣ᤼ฟつไࡶྵࡵࡓ๐ῶᑐ⟇ࡀᐇ᪋ࡉࢀࠊᖹᡂ22ᖺᗘࡲ࡛࡟VOC᤼ฟ⥲㔞ࢆᖹᡂ12ᖺᗘẚ࡛3๭⛬ᗘ๐ῶࡍࡿ䜺䝋䝸䞁✀㻢㻞㻢㻜㻢㻟㻢㻟㻢㻟㻢㻟㻤㻡㻤㻟㻤㻠㻤㻢㻤㻜㻵㻮㻼㻟㻠㻟㻡㻟㻞㻟㻝㻟㻠㻟㻞㻞㻣㻞㻤㻞㻣㻞㻣㻞㻥㻞㻤㻌㻡㼢㼛㼘㻑㻠㻣㻡㻝㻠㻠㻠㻢㻠㻢㻠㻡㻟㻤㻟㻤㻟㻤㻟㻥㻠㻜㻠㻜㻝㻜㼢㼛㼘㻑㻡㻞㻡㻤㻡㻜㻡㻞㻡㻞㻡㻝㻠㻠㻠㻠㻠㻟㻠㻡㻠㻡㻠㻡㻞㻜㼢㼛㼘㻑㻡㻥㻢㻢㻡㻤㻢㻝㻢㻜㻡㻥㻡㻡㻡㻟㻡㻠㻡㻠㻡㻠㻡㻠㻟㻜㼢㼛㼘㻑㻢㻣㻣㻠㻢㻢㻢㻥㻢㻥㻢㻢㻢㻢㻢㻞㻢㻠㻢㻠㻢㻠㻢㻞⵨␃ᛶ≧㻠㻜㼢㼛㼘㻑㻣㻢㻤㻝㻣㻤㻣㻤㻤㻜㻣㻡㻣㻤㻣㻝㻣㻡㻣㻠㻣㻢㻣㻝㻡㻜㼢㼛㼘㻑㻤㻤㻤㻥㻥㻡㻤㻥㻥㻢㻤㻡㻥㻟㻤㻞㻥㻜㻤㻢㻥㻞㻤㻝㻢㻜㼢㼛㼘㻑㻝㻜㻜㻥㻥㻝㻝㻤㻝㻜㻝㻝㻝㻞㻥㻥㻝㻜㻣㻥㻡㻝㻜㻥㻥㻥㻝㻜㻥㻥㻠䠄䉝䠅㻣㻜㼢㼛㼘㻑㻝㻝㻝㻝㻝㻝㻝㻟㻥㻝㻝㻢㻝㻞㻤㻝㻝㻢㻝㻝㻥㻝㻜㻤㻝㻞㻤㻝㻝㻠㻝㻞㻞㻝㻝㻜㻤㻜㼢㼛㼘㻑㻝㻞㻞㻝㻞㻢㻝㻡㻞㻝㻟㻣㻝㻠㻣㻝㻟㻥㻝㻞㻥㻝㻞㻡㻝㻠㻞㻝㻟㻠㻝㻟㻥㻝㻟㻞㻥㻜㼢㼛㼘㻑㻝㻠㻣㻝㻡㻜㻝㻢㻞㻝㻢㻢㻝㻢㻢㻝㻢㻠㻝㻠㻠㻝㻡㻜㻝㻡㻟㻝㻢㻞㻝㻢㻟㻝㻡㻡㻥㻡㼢㼛㼘㻑㻝㻢㻣㻝㻢㻝㻝㻢㻤㻝㻤㻠㻝㻣㻝㻝㻤㻟㻝㻡㻠㻝㻢㻤㻝㻢㻟㻝㻤㻝㻝㻢㻥㻝㻣㻡㻥㻣㼢㼛㼘㻑㻝㻣㻜㻝㻢㻡㻝㻣㻟㻝㻥㻢㻝㻣㻡㻝㻥㻠㻝㻢㻞㻝㻣㻣㻝㻢㻥㻝㻥㻢㻝㻣㻟㻝㻤㻣㻱㻼㻝㻣㻥㻝㻣㻠㻝㻥㻜㻞㻝㻜㻝㻤㻣㻞㻜㻥㻝㻣㻢㻝㻤㻢㻝㻤㻤㻞㻜㻡㻝㻤㻞㻝㻥㻥㻥㻤㻥㻥㻥㻤㻥㻤㻥㻥㻥㻤㻥㻤㻥㻤㻥㻤㻥㻤㻥㻥㻥㻤㻝㻜㻜㻥㻞㻥㻥㻥㻝㻥㻤㻥㻜㻥㻤㻥㻝㻥㻥㻥㻝㻥㻥㻥㻜࡜ࡋࡓ┠ᶆࡣ᪤࡟㐩ᡂ1)ࡉࢀ࡚࠸ࡿࠋࡋ࠿ࡋࠊ㏆ᖺࠊཎᅉ≀㉁࡛࠶ࡿ኱Ẽ୰ࡢVOC࡜❅⣲㓟໬≀ࡀపῶࡋ࡚࠸ࡿ࡟ࡶ
࠿࠿ࢃࡽࡎࠊ࢜࢟ࢩࢲࣥࢺࡀቑຍࡋ࡚࠸ࡿࡇ࡜࠿ࡽࠊVOCࡢ⥲㔞ࢆ๐ῶࡍࡿࡇ࡜࡟ຍ࠼ࠊ᭦࡟ࠊ࢜ࢰࣥ⏕ᡂ⬟ࡢ㧗࠸≀㉁ࡢ๐ῶ࡟╔┠ࡍࡿࡇ࡜ࡀᚲせ࡜ࡉࢀ࡚࠸ࡿࠋVOCࡢ᤼ฟ㔞ࡣ᭷ᐖᛶࡢ࠶ࡿᡂศࢆ୰ᚰ࡟PRTR㸦Pollutant Release
and Transfer Register㸧ไᗘ➼࡛᥎ィࡉࢀࠊࡲࡓ᤼ฟ㔞ㄪᰝ࡞࡝ࡶᐇ᪋ࡉࢀ࡚࠸ࡿࡀࠊVOC ᑐ⟇ࢆຠᯝⓗ࡟᥎㐍ࡋ࡚࠸ࡃࡓࡵ࡟ࡣಶࠎࡢVOC ᡂศࡢ᤼ฟ㔞ࢆᢕᥱࡍࡿࡇ࡜ࡀ㻌඲␃ฟ㔞䚷㻔㼢㼛㼘㻑䠅㻖㻞䜸䜽䝍䞁౯୙ྍḞ࡛࠶ࡿ࡜⪃࠼ࡽࢀࡿࠋ㻖㻝䚷㻼䠖䝥䝺䝭䜰䝮䚸㻾䠖䝺䜼䝳䝷䞊ᮏㄪᰝ࡛ࡣࠊ⮬ື㌴࡬ࡢ⤥Ἔ᫬࡟᤼ฟࡉࢀࡿ࢞ࢯࣜࣥ⵨㻖㻞䚷䝸䝃䞊䝏䜸䜽䝍䞁౯䠖ᇶ‽䛸䛺䜛㻯㻲㻾䜶䞁䝆䞁䛾㻢㻜㻜㼞㼜㼙䛷྾ධ✵Ẽ㻡㻝㻚㻣䉝䛷㻟㻜㻜㻜㼞㼜㼙䜎䛷䛾୰ప㏿ᇦ䛷䛾䜰䞁䝏䝜䝑䜽ᛶ䜢⾲䛩䚹ᐃ䚹㏻ᖖ䛾䜶䞁䝆䞁䛷䛿Ⓨ࢞ࢫࡢᡂศཬࡧ᤼ฟཎ༢఩ࢆㄪᰝࡍࡿ࡜࡜ࡶ࡟ࠊ㒔ෆ⤥⬟࡛࠶ࡿࠋࡲࡓࠊ௒ᅇࡢヨ㦂ࡣࠊᅜෆ୍࡛⯡ⓗ࡟౑⏝ࡉἜᡤ࠿ࡽࡢ࢞ࢯࣜࣥ⵨Ⓨ࢞ࢫ᤼ฟ㔞ࢆ᥎ィࡋࡓࠋ࡞࠾ࠊヨࢀ࡚࠸ࡿ⤥Ἔࣀࢬࣝࢆ⏝࠸ࡓࠋ㦂⇞ᩱཬࡧ⇞ᩱ⵨Ⓨ࢞ࢫࡢศᯒࡣࠊ▼Ἔ⏘ᴗάᛶ໬ࢭࣥࢱ࡞࠾ࠊヨ㦂࡟౑⏝ࡋࡓ࢞ࢯࣜࣥ஌⏝㌴ࡣࠊᕷሙ༨᭷⋡ࡀ࣮▼Ἔᇶ┙ᢏ⾡◊✲ᡤ࡟ጤクࡋ࡚⾜ࡗࡓࠋ㧗࠸୍⯡ⓗ࡞஌⏝㌴ࢆ౪ヨ㌴୧࡜ࡋࡓࠋ౪ヨ㌴୧ㅖඖࢆ⾲3࡟♧ࡋࡓࠋ㸰 ᐇ㦂(1) ヨ㦂⇞ᩱࡢᴫせ ▼Ἔඖ኎ࡾ3♫ࡢ࢞ࢯࣜࣥ2✀㸦ࣞࢠ࣮ࣗࣛࠊࣁ࢖࢜ࢡ㸦ࣉ࣑ࣞ࢔࣒㸧㸧࡟ࡘ࠸࡚ࠊ஧Ꮨ㸦ኟࠊ෤㸧ྜィ12✀㢮ࡢᕷ㈍࢞
ࢯࣜࣥྠ➼ရࢆ౪ヨ⇞ᩱ࡜ࡋࡓࠋኟᏘ࢞ࢯࣜࣥࡣࠊᖹᡂ22ᖺ8᭶㹼ᖹᡂ22ᖺ9᭶࡟᥇ྲྀࡋࠊᐦ㛢࣭ప㈓ⶶࡋࡓࠋ෤Ꮨ

࢞ࢯࣜࣥࡣࠊᖹᡂ22ᖺ12᭶㹼ᖹᡂ23ᖺ1᭶࡟᥇ྲྀࡋࠊኟᏘศ
࡜ྜࢃࡏ࡚஧Ꮨศࢆศᯒࡋࡓࠋ౪ヨ⇞ᩱᛶ≧ࢆ⾲1࡟♧ࡋࡓࠋ(2) ヨ㦂タഛ ⤥Ἔ᫬⵨Ⓨ࢞ࢫࡢᐃࡣࠊSHED㸦Sealed Housing for

Evaporative Determination㸧ࢩࢫࢸ࣒࡜࿧ࡤࢀࡿヨ㦂タഛࢆ⏝࠸ࠊᅗ1࡟♧ࡍᡭ㡰࡟ࡼࡾ⾜ࡗࡓࠋࡇࢀࡣᐦ㛢ࡉࢀࡓ⾲㻌㻞䚷㻿㻴㻱㻰タഛ䛾୺せ௙ᵝ䜶䞁䜽䝻䞊䝆䝱䜶䞁䜽䝻䞊䝆䝱タᐃ ᗘ✵ㄪ㻝㻤㻚㻟㻌䡚㻠㻜㻚㻢㻌䉝෭༷⬟ຊ㻝㻟㻚㻞㻛㻝㻡㻚㻜㻌㼗㼃⤥Ἔ⿦⨨䝅䝇䝔䝮⇞ᩱ䝍䞁䜽ᐜ㔞䠖㻝㻟㻜㻌㻸タᐃ⤥Ἔ㏿ᗘ⇞ᩱ⤥Ἔ⿦⨨㻝㻡䡚㻠㻡㻌㼼㻝㻚㻝㻌㻸㻛㼙㼕㼚⾲㻌㻟㻌౪ヨ㌴୧୺せㅖඖ⥲᤼Ẽ㔞⇞ᩱ౪⤥䝅䝇䝔䝮Ẽ⟄ᩘ䜻䝱䝙䝇䝍䞊ᐜ㔞⇞ᩱ䝍䞁䜽ᐜ㔞

SHEDࡢ୰࡛㌴୧࡟⇞ᩱࢆ⤥Ἔࡋࠊࡇࡢ᫬࡟Ⓨ⏕ࡍࡿ⵨Ⓨ᤼ฟ䜺䝇ㄆᐃ䝺䝧䝹࢞ࢫࡢ㔞ࢆࠊᐊෆࡢ඲Ⅳ໬Ỉ⣲㸦THC㸧⃰ᗘ࡜㒊ᒇࡢᐜ✚ࠊ(3) ⵨Ⓨ࢞ࢫࡢヨ㦂᮲௳ᅽຊࠊᗘ࠿ࡽィ⟬ࡍࡿࡶࡢ࡛࠶ࡿࠋSHEDタഛࡢ୺せ௙㻝㻚㻡䚷㻸㻼㻲㻵┤ิ㻠㻜㻚㻤䚷㻸㻠㻡䚷㻸ᖹᡂ㻝㻣ᖺᇶ‽᤼ฟ䜺䝇㻣㻡䠂పῶ䝺䝧䝹⵨Ⓨ࢞ࢫヨ㦂ࡢᐇ㦂タഛୖࡢไ⣙࠿ࡽࠊኟᏘ࡟᥇ྲྀࡋ

ᵝࢆ⾲2࡟グࡋࡓࠋᮏ⤥Ἔヨ㦂⏝ࡢSHEDタഛ࡛ࡣࠊᐦ㛢ᐊࡓ࢞ࢯࣜࣥࢆ⏝࠸ࡓヨ㦂࡟ࡘ࠸࡚ࡣࠊ⎔ቃෆࡢ⤥Ἔᗘ㸦㸻ᐊෆ࡟ࢯ࣮ࢡࡉࢀ࡚࠸ࡿ㌴୧ࡢᗘ㸧࡜⤥Ἔࡍࡿ⇞ᩱࡢᗘ㸦⤥Ἔᗘࠋ⎔ቃᗘ㸧ࢆ⊂❧࡟ไᚚࡍࡿ

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ෆᚄ㸸PP࣒࢝ࣛ㛗ࡉ㸸P⇞ᩱ䝍䞁䜽䝣䝷䝑䝅䞁䜾⇞ᩱ⤥Ἔ㻿㻴㻱㻰ෆ䛻㌴୧ᦙධ࢟ࣕࣜ࢔࢞ࢫ),'),'ᗘ㸸Υᗘ㸸Υศᯒ᫬㛫PLQ
PLQ
1࡛ಸ࡟ᕼ㔘ࡋ 1࡛ಸ࡟ᕼ㔘ࡋࢧࣥࣉࣝ
ࡓ࢞ࢫP/ࡓ࢞ࢫP/
ᑟධ㔞ࣈࣛࣥࢡ㸸P/ ࣈࣛࣥࢡ㸸P/
ึᮇ㸸Υึᮇ㸸Υึᮇಖᣢ᫬㛫ึᮇಖᣢ᫬㛫
PLQ
PLQ
᪼ ㏿ᗘ
᪼ ㏿ᗘ
࣒࢝ࣛ ᗘΥPLQΥPLQ᭱⤊ ᗘ㸸Υ ᭱⤊ ᗘ㸸Υ᭱⤊ಖᣢ᫬㛫᭱⤊ಖᣢ᫬㛫PLQ
PLQヨ㦂⏝䜻䝱䝙䝇䝍䞊஺᥮ᐃ⤥Ἔ㻿㻴㻱㻰ෆ㼀㻴㻯+H㸸P/PLQ᳨ฟჾ䝋䞊䜽䠄㻝㻤᫬㛫䠅㻿㻴㻱㻰ෆ䝤䝷䞁䜽㼀㻴㻯+H㸸P/PLQ㧗ἛⅬ&㹼&'%ෆᚄ㸸PP㛗ࡉ㸸P⭷ཌ㸸ȣPᐃᅗ㻝䚷⵨Ⓨ䜺䝇ヨ㦂ᡭ㡰ࡿ㝿࡟࠾࠸࡚ᐇ㝿࡟⏕ࡌࡿ⵨Ⓨ࢞ࢫ㔞࡜ࡣⱝᖸ␗࡞ࡿࡇ࡜࡟␃ពࡍࡿᚲせࡀ࠶ࡿࠋࡲࡓࠊࣇࣝࢫࢱࣥࢻ࡜ࢭࣝࣇࢫࢱࣥࢻ⤥Ἔᶵ࡜࡛ඹ㏻࡜࡞ࡿ⤥Ἔ㏿ᗘ࡜ࡋࡓࠋヨ㦂᮲௳ࢆ⾲4࡟♧ࡋࡓࠋࡇࢀࡽࡢヨ㦂᮲௳ࡣࠊ▼Ἔᇶ┙ᢏ⾡◊✲ᡤࡀ㐣ཤ࡟⾜ࡗࡓ࢞ࢯࣜࣥ⵨Ⓨ࢞ࢫࡢヨ㦂᪉ἲ2)࡟‽ࡌ࡚タᐃࡋࡓࠋ⾲㻌㻠㻌ヨ㦂᮲௳ኟᏘ᥇ྲྀ࢞ࢯࣜࣥ ෤Ꮨ᥇ྲྀ࢞ࢯࣜࣥ35Υ
20Υ⎔ቃ ᗘ30Υ
20Υ⤥Ἔ ᗘ35L/min⤥Ἔ㏿ᗘࢱࣥࢡᐜ㔞㸦࢝ࢱࣟࢢ್㸧ࡢ85㸣⤥Ἔ㔞
㸦10ᐜ㔞㸣࠿ࡽ95ᐜ㔞㸣ࡲ࡛⤥Ἔ㸧⾲(7%(࢚ࢱࣀ࣮ࣝศᯒ᮲௳+3ෆᚄ㸸PP
࣒࢝ࣛ㛗ࡉ㸸P⭷ཌ㸸ȣP࢟ࣕࣜ࢔
+H㸸P/PLQ࢞ࢫ㉁㔞ศᯒィ᳨ฟჾᅄ㔜ᴟ㒊 ᗘ㸸Υ࢖࢜ࣥ※ ᗘ㸸Υศᯒ᫬㛫
PLQࢧࣥࣉࣝȣ/ᑟධ㔞ࢫࣉࣜࢵࢺẚ㸸ึᮇ㸸Υึᮇಖᣢ᫬㛫㸸PLQ࣒࢝ࣛ ᗘ᪼ ㏿ᗘ㸸ΥPLQ᭱⤊ ᗘ㸸Υ᭱⤊ಖᣢ᫬㛫㸸PLQ㸱 ⤖ᯝཬࡧ⪃ᐹศᯒ㡯┠ཬࡧศᯒ᪉ἲ
THC⃰ᗘࡣࠊFIDࢆ᳨ฟჾ࡜ࡍࡿTHCィࢆ⏝࠸࡚ᐃࡋ(1) ࢞ࢯࣜࣥࡢᡂศ࡟ࡘ࠸࡚

ࡓࠋ⵨Ⓨ࢞ࢫ୰ࡢⅣ໬Ỉ⣲㢮ࡢ⤌ᡂศᯒࡣࠊGC-FIDἲࢆ⏝⇞ᩱᡂศ࡜ࡋ࡚ࠊྠᐃ࡛ࡁ࡞࠸ࡶࡢࡶྵࡵ࡚⣙460ᡂศ

࠸࡚⾜࠸ࠊ⡿ᅜ࢝ࣜࣇ࢛ࣝࢽ࢔኱Ẽ㈨※ᒁ㸦CARB㸧࡛ᐃࡀ᳨ฟࡉࢀࡓࠋ୺せᡂศࢆ⾲7࡟♧ࡋࡓࠋ23ᡂศ࡛⣙70㸣

ࡵࡽࢀࡓNMOG㸦Non-Methane Organic Gas㸧ศᯒἲ3)࡟‽ᣐࢆ༨ࡵ࡚࠸ࡿࠋ୺࡞ᡂศࡢኟᏘࠊ෤Ꮨࡢ⤌ᡂ࡟኱ࡁ࡞ኚࡋ࡚ᐃ㔞ࢆ⾜ࡗࡓࠋⅣ໬Ỉ⣲㢮ࡢ⤌ᡂศᯒ᮲௳ࢆ⾲5࡟♧ࡋ໬ࡣ࡞࠸ࡀࠊ෤Ꮨ࡛ࡣኟᏘ࡟ẚ࡭ࠊࢺ࢚ࣝࣥࡢྵ᭷㔞ࡀࡓࠋETBE࠾ࡼࡧ࢚ࢱࣀ࣮ࣝ࡟㛵ࡋ࡚ࡣࠊGC-MS࡟ࡼࡾศ

16㸣࠿ࡽ12㸣࡟ࠊ1,2,4-ࢺ࣓ࣜࢳࣝ࣋ࣥࢮࣥࡀ4.5㸣࠿ࡽᯒࢆ⾜࠸ࠊ᳨㔞⥺ἲ࡟ࡼࡾᐃ㔞ࢆ⾜ࡗࡓࠋศᯒ᮲௳ࢆ⾲6

2.4㸣࡟ῶᑡࡋࠊ㏫࡟ࠊ1,3-ࢪ࣓ࢳࣝ࣋ࣥࢮࣥࡀ2.7㸣࠿ࡽ࡟♧ࡋࡓࠋ

4.2㸣࡟ࠊn-ࣈࢱࣥࡀ1.4㸣࠿ࡽ3.2㸣࡟ࠊ࢖ࢯࣈࢱࣥࡀ0.6㸣
࠿ࡽ2.0㸣࡟ቑຍࡋ࡚࠸ࡿࠋ᳜≀⏤᮶ࡢᡂศ㸦ࠕࣂ࢖࢜࢞ ⾲㻌㻣䚷୺せᡂศ䛾ྵ᭷⋡⾲㻌㻤䚷⵨Ⓨ䜺䝇䛾୺せᡂศ䠄㼣㼠䠂䠅䠄㼣㼠䠂䠅ᡂศኟᏘ෤Ꮨᖺᖹᆒ⣼✚䜲䝋䝨䞁䝍䞁㻟㻝㻚㻝㻞㻞㻚㻣㻞㻢㻚㻥㻞㻢㻚㻥㻞㻟㻚㻜㼚㻙䝤䝍䞁㻝㻝㻚㻡㻞㻜㻚㻤㻝㻢㻚㻞㻠㻟㻚㻜㻞㻣㻚㻢䜲䝋䝤䝍䞁㻣㻚㻡㻝㻥㻚㻠㻝㻟㻚㻠㻡㻢㻚㻡㻠㻚㻟㻟㻝㻚㻥㼚㻙䝨䞁䝍䞁㻤㻚㻣㻢㻚㻠㻣㻚㻢㻢㻠㻚㻝㻟㻚㻠㻠㻚㻞㻟㻢㻚㻝㻞㻙䝯䝏䝹㻙㻞㻙䝤䝔䞁㻠㻚㻝㻟㻚㻜㻟㻚㻢㻢㻣㻚㻢㻟㻚㻢㻟㻚㻡㻟㻥㻚㻢㻞㻙䝯䝏䝹㻙㻝㻙䝤䝔䞁㻠㻚㻝㻞㻚㻣㻟㻚㻠㻣㻝㻚㻜㻞㻚㻣㻠㻚㻞㻟㻚㻠㻠㻟㻚㻜㼠㻙㻞㻙䝤䝔䞁㻟㻚㻝㻞㻚㻤㻞㻚㻥㻣㻠㻚㻜㻟㻙䝯䝏䝹䝨䞁䝍䞁㻞㻚㻥㻞㻚㻡㻞㻚㻣㻠㻡㻚㻣㻞㻙䝯䝏䝹䝨䞁䝍䞁㻟㻚㻢㻞㻚㻞㻞㻚㻥㻣㻢㻚㻥㼚㻙䝦䜻䝃䞁㻞㻚㻥㻞㻚㻜㻞㻚㻠㻠㻤㻚㻞㼠㻙㻞㻙䝨䞁䝔䞁㻟㻚㻠㻞㻚㻠㻞㻚㻥㻣㻥㻚㻤㻝㻙䝯䝏䝹㻙㻟㻙䜶䝏䝹䝧䞁䝊䞁㻞㻚㻣㻞㻚㻝㻞㻚㻠㻡㻜㻚㻡㼏㻙㻞㻙䝨䞁䝔䞁㻝㻚㻥㻝㻚㻠㻝㻚㻣㻤㻝㻚㻠㼚㻙䝤䝍䞁㻝㻚㻠㻟㻚㻞㻞㻚㻟㻡㻞㻚㻥䝖䝹䜶䞁㻞㻚㻟㻝㻚㻜㻝㻚㻢㻤㻟㻚㻝㻝㻘㻞㻙䝆䝯䝏䝹䝧䞁䝊䞁㻝㻚㻤㻞㻚㻠㻞㻚㻝㻡㻠㻚㻥㻝㻙䝤䝔䞁㻝㻚㻟㻞㻚㻜㻝㻚㻢㻤㻠㻚㻣䝯䝏䝹䝅䜽䝻䝨䞁䝍䞁㻞㻚㻟㻝㻚㻢㻝㻚㻥㻡㻢㻚㻥䜲䝋䝤䝔䞁㻝㻚㻜㻝㻚㻤㻝㻚㻠㻤㻢㻚㻝㻞㻙䝯䝏䝹㻙㻞㻙䝤䝔䞁㻝㻚㻥㻞㻚㻜㻝㻚㻥㻡㻤㻚㻤㻟㻙䝯䝏䝹䝨䞁䝍䞁㻝㻚㻤㻝㻚㻜㻝㻚㻠㻤㻣㻚㻡㻟㻙䝯䝏䝹䝦䜻䝃䞁㻝㻚㻡㻝㻚㻢㻝㻚㻡㻢㻜㻚㻟㼚㻙䝦䜻䝃䞁㻝㻚㻥㻜㻚㻤㻝㻚㻠㻤㻤㻚㻥㻞㻙䝯䝏䝹䝦䜻䝃䞁㻝㻚㻠㻝㻚㻡㻝㻚㻡㻢㻝㻚㻤㻱㼀㻮㻱㻝㻚㻢㻝㻚㻜㻝㻚㻟㻥㻜㻚㻟㼜㻙䜻䝅䝺䞁㻌㻝㻚㻝㻝㻚㻣㻝㻚㻠㻢㻟㻚㻞㻝㻙䝨䞁䝔䞁㻝㻚㻞㻝㻚㻞㻝㻚㻞㻥㻝㻚㻡㼠㻙㻞㻙䝨䞁䝔䞁㻝㻚㻠㻝㻚㻠㻝㻚㻠㻢㻠㻚㻢䝥䝻䝟䞁㻜㻚㻣㻝㻚㻟㻝㻚㻜㻥㻞㻚㻡䜶䝏䝹䝧䞁䝊䞁㻝㻚㻜㻝㻚㻣㻝㻚㻠㻢㻢㻚㻜䝯䝏䝹䝅䜽䝻䝨䞁䝍䞁㻝㻚㻟㻜㻚㻢㻜㻚㻥㻥㻟㻚㻠ᡂศኟᏘ෤Ꮨᖹᆒ⣼✚䝖䝹䜶䞁㻝㻢㻚㻝㻝㻞㻚㻞㻝㻠㻚㻝㻝㻠㻚㻝䜲䝋䝨䞁䝍䞁㻤㻚㻢㻥㻚㻜㻤㻚㻤㻱㼀㻮㻱㻡㻚㻟㻠㻚㻝㻠㻚㻢㻞㻙䝯䝏䝹䝨䞁䝍䞁㻠㻚㻡㻠㻚㻝㻝㻘㻞㻘㻠㻙䝖䝸䝯䝏䝹䝧䞁䝊䞁㻠㻚㻥㼚㻙䝨䞁䝍䞁㻟㻚㻠㻝㻘㻟㻙䝆䝯䝏䝹䝧䞁䝊䞁䜲䝋䝤䝍䞁㻜㻚㻢㻞㻚㻜㻝㻚㻟㻢㻣㻚㻟䝅䜽䝻䝨䞁䝍䞁㻜㻚㻥㻜㻚㻡㻜㻚㻣㻥㻠㻚㻝㻝㻘㻟㻘㻡㻙䝖䝸䝯䝏䝹䝧䞁䝊䞁㻝㻚㻟㻝㻚㻜㻝㻚㻞㻢㻤㻚㻡㻟㻙䝯䝏䝹㻝㻙䝤䝔䞁㻜㻚㻡㻜㻚㻡㻜㻚㻡㻥㻠㻚㻢㻝㻙䝯䝏䝹㻙㻠㻙䜶䝏䝹䝧䞁䝊䞁㻝㻚㻞㻜㻚㻥㻝㻚㻝㻢㻥㻚㻡㻟㻙䝯䝏䝹㻙㼏㻙㻞㻙䝨䞁䝔䞁㻜㻚㻢㻜㻚㻞㻜㻚㻠㻥㻡㻚㻜㼚㻙䝦䝥䝍䞁㻝㻚㻜㻝㻚㻝㻝㻚㻝㻣㻜㻚㻢ࢀ࡯࡝࡞ࡃࠊࣉ࣑ࣞ࢔࢞ࢯࣜࣥࡢᖹᆒࡀኟᏘ⏝࡛⣙1.36
ࢯࣜࣥࠖ࡜ࡋ㈍኎ࡉࢀ࡚࠸ࡿࠋ㸧࡜ࡋ࡚▱ࡽࢀࡿ࢚ࢳࣝࢱ࣮

g/Lࠊ෤Ꮨ⏝࡛⣙1.45 g/Lࠊࣞࢠ࣮ࣗࣛ࢞ࢯ࡛ࣜࣥྠࡌࡃࠊ

ࢩ࣮ࣕࣜࣈࢳ࢚࣮ࣝࢸࣝ㸦ETBE㸧ࡣࠊඖ኎ࡾ఍♫࡟ࡼࡗ࡚ኟᏘ⏝࡛⣙1.42 g/Lࠊ෤Ꮨ⏝࡛⣙1.46 g/L࡛࠶ࡾࠊᖺᖹᆒ

㓄ศẚ⋡ࡣᵝࠎ࡛࠶ࡿࡀࠊ0 㹼 6㸣ࡢ⠊ᅖ࡛࠶ࡗࡓࠋ࡛ࡣࣉ࣑ࣞ࢔࢞ࢯࣜࣥࡢᖹᆒ࡛⣙1.41 g/Lࠊࣞࢠ࣮ࣗࣛ࢞

(2) ⵨Ⓨ࢞ࢫ⤌ᡂࡢ≉ᚩࢯ࡛ࣜࣥ⣙1.44 g/L࡛࠶ࡗࡓࠋࡇࡢ⤖ᯝࡣࠊ㐣ཤࡢᮾி㒔

⵨Ⓨ࢞ࢫᡂศ࡜ࡋ᳨࡚ฟࡉࢀࡓ131ᡂศࡢ࠺ࡕࠊ୺せᡂศࡀ⾜ࡗࡓㄪᰝ⤖ᯝ1)ࡢ1.44 g/L࡜࡯ࡰྠᵝ࡛࠶ࡗࡓࠋࡢྵ᭷⋡ࢆ⾲ 8 ࡟♧ࡍࠋ22ᡂศ࡛⣙95㸣ࢆ༨ࡵ࡚࠸ࡿࠋኟ

࡞࠾ࠊ෤Ꮨ⏝࢞ࢯࣜࣥࡢ⵨Ⓨ㔞ࡀከࡃ࡞ࡗ࡚࠸ࡿࡀࠊ

Ꮨࠊ෤Ꮨࡢᖹᆒ࡛ࠊ୺࡞ᡂศࡣࠊ࢖ࢯ࣌ࣥࢱࣥࡀ27㸣ࠊn-ࡇࢀࡣᚲࡎࡋࡶᐇ㝿ࡢ⵨Ⓨ㔞ࡀከ࠸࡜࠸࠺ࡇ࡜࡛ࡣ࡞ࡃࠊ

ࣈࢱࣥࡀ16㸣ࠊ࢖ࢯࣈࢱࣥࡀ13㸣ࠊn-࣌ࣥࢱࣥࡀ8㸣⛬ᗘ࡛෤Ꮨ⏝࡟᥹Ⓨᡂศࢆከࡃ㓄ྜࡋ࡚࠸ࡿࡓࡵ࡛࠶ࡿࠋ⌧ᐇ࠶ࡗࡓࠋ࡞࠾ࠊETBEࡣࠊ⵨Ⓨ࢞ࢫ࡛ࡣ⣙1.3㸣 ⛬ᗘ࡛࠶ࡗࡢ෤Ꮨ࡟࠾ࡅࡿ⤥Ἔ᫬ࡢẼࡓࠋࡇࢀࡽࡢᡂศ࡛ኟᏘ࡟๭ྜࡀ㧗ࡃ࡞ࡗ࡚࠸ࡿࡢࡣࠊ2-ࡣ㐣኱ഃ࡟࡞ࡗ࡚࠸ࡿྍ⬟ᛶࡀ࠶ࡿࠋ

࣓ࢳࣝࣈࢱࣥࠊn-࣌ࣥࢱ࡛ࣥ࠶ࡾࠊ෤Ꮨ࡟๭ྜࡀ㧗ࡃ࡞ࡗ(࢖) ⵨Ⓨ࢞ࢫᡂศู᤼ฟಀᩘࢆ⪃៖ࡍࡿ࡜ࠊ௒ᅇࡢ᥎ィ࡚࠸ࡿࡢࡣn-ࣈࢱࣥࠊ2-࣓ࢳࣝࣉࣟࣃ࡛ࣥ࠶ࡾࠊ⵨Ẽᅽࡢ

⵨Ⓨ࢞ࢫࡢ୺せᡂศࡢྵ᭷⋡㸦⾲8㸧ཬࡧ⤥Ἔ㔞ᙜࡓࡾㄪᩚࡀ⾜ࢃࢀ࡚࠸ࡿ࡜⪃࠼ࡽࢀࡿࠋ࢞ࢯࣜࣥᡂศ࡜⵨Ⓨ࢞

ࡢ⵨Ⓨ࢞ࢫ㔞㸦⾲9㸧࠿ࡽࠊᡂศูࡢ᤼ฟಀᩘࡀồࡵࡽࢀࢫᡂศ࡜ࡢ㛵ಀ࡟ࡘ࠸࡚ࡣࠊู㏵᳨ウணᐃ࡛࠶ࡿࠋ

ࡿࠋ୺せ40ᡂศࡢ᤼ฟಀᩘࢆ⾲10࡟♧ࡍࠋࡇࡢ40ᡂศ࡛ࠊ(3) ᤼ฟཎ༢఩ྜィ᤼ฟಀᩘࡢ99㸣ࢆ༨ࡵࡿࠋ(࢔) ⵨Ⓨ࢞ࢫྜィࡢ᤼ฟཎ༢఩PRTRไᗘ࡛ࡣࠊ࢞ࢯࣜࣥ⵨Ⓨ࢞ࢫࡢ࠺ࡕࠊᑐ㇟໬Ꮫ≀ཎ༢఩࡜࡞ࡿ⤥Ἔ㔞ᙜࡓࡾࡢ⵨Ⓨ࢞ࢫ㔞ࢆ⾲9࡟♧ࡋࡓࠋ㉁࡜ࡋ࡚ࠊ࢚ࢳࣝ࣋ࣥࢮࣥࠊ࢟ࢩࣞࣥࠊ1,3,5-ࢺ࣓ࣜࢳࣝ⤥Ἔ᫬࡟࢟ࣕࢽࢫࢱ࣮࡟྾╔ࡉࢀࡿ㉁㔞ࡢࢳ࢙ࢵࢡࢆ⾜ࡗ࣋ࣥࢮࣥࠊࢺ࢚ࣝࣥࠊ࣋ࣥࢮࣥࡢ5≀㉁ࢆᑐ㇟࡜ࡋ࡚ሗ࿌ࡓࡀࠊ↓ど࡛ࡁࡿ⛬ᗘ࡛࠶ࡗࡓࠋἜ✀࡟ࡼࡿࡤࡽࡘࡁࡣࡑࡉࢀ࡚࠸ࡿ5)ࠋࡇࡢ5ᡂศ࡟ࡘ࠸࡚௒ᅇồࡵࡓ᤼ฟಀᩘ࡜ ⾲㻌㻥䚷⵨Ⓨ䜺䝇᤼ฟ㔞ኟᏘᏘ⠇ရ㉁⵨Ⓨ䜺䝇㔞䠄㼓㻛㻸䠅⵨Ⓨ䜺䝋䝸䞁㔞䠄㼙㻸㻛㼠㼑㼟㼠䠅෤Ꮨࡇࢀࡣ᪤ሗ4)ࡢ⤖ᯝ9,600.3ࢺࣥ/ᖺ࡜ẚ㍑ࡍࡿ࡜ࠊ⣙4.5㸣

ᖹᆒ䝥䝺䝭䜰 䝺䜼䝳 䝥䝺䝭䜰 䝺䜼䝳 䝥䝺䝭䜰 䝺䜼䝳䝮䝷䞊䝮䝷䞊䝮䝷䞊㻝㻚㻟㻢㻠㻝㻚㻠㻝㻢㻝㻚㻠㻠㻣㻝㻚㻠㻢㻡㻝㻚㻠㻜㻡㻝㻚㻠㻠㻜㻢㻤㻚㻥㻣㻟㻚㻞㻣㻟㻚㻤㻣㻣㻚㻣㻣㻝㻚㻟㻣㻡㻚㻠ࡢቑຍ࡜࡞ࡗ࡚࠸ࡿࠋ࡞࠾ࠊ⤥Ἔᡤ࡟࠾ࡅࡿ⵨Ẽᅇ཰⿦⨨ࡣ඲ᅜⓗ࡟タ⨨ࡉࢀ࡚࠸࡞࠸5)ࡢ࡛ࠊࡇࡢ඲㔞ࡀ᤼ฟࡉࢀࡿ࡜⪃࠼ࡽࢀࡿࠋ(࢖) ᡂศู᤼ฟ㔞⾲㻝㻜䚷୺せᡂศู᤼ฟಀᩘཬ䜃᤼ฟ㔞䠄ᖹᡂ㻞㻝ᖺᗘᮾி㒔䠅Ⅳ⣲ᩘ⤌ᡂ㻡㻠㻠㻡㻢㻠㻡㻢㻢㻠㻠㻡㻢㻡㻟㻣㻡㻢㻡㻡㻣㻣㻢㻡㻢㻣㻢㻢㻡㻢㻢㻣㻣㻣㻣㻞㻤㻣㻤㻣䜲䝋䝨䞁䝍䞁䜲䝋䝤䝍䞁㼚㻙䝤䝍䞁㼚㻙䝨䞁䝍䞁㻞㻙䝯䝏䝹䝨䞁䝍䞁㼠㻙㻞㻙䝤䝔䞁㻞㻙䝯䝏䝹㻙㻝㻙䝤䝔䞁㼚㻙䝦䜻䝃䞁㻱㼀㻮㻱㻝㻙䝤䝔䞁䜲䝋䝤䝔䞁㻞㻙䝯䝏䝹㻙㻞㻙䝤䝔䞁㻟㻙䝯䝏䝹䝨䞁䝍䞁㼠㻙㻞㻙䝨䞁䝔䞁䝥䝻䝟䞁䝖䝹䜶䞁㼏㻙㻞㻙䝨䞁䝔䞁䝯䝏䝹䝅䜽䝻䝨䞁䝍䞁䝅䜽䝻䝨䞁䝍䞁㻝㻙䝨䞁䝔䞁㻟㻙䝯䝏䝹䝦䜻䝃䞁㻞㻙䝯䝏䝹䝦䜻䝃䞁㻟㻙䝯䝏䝹㻙㼏㻙㻞㻙䝨䞁䝔䞁㻟㻙䝯䝏䝹㻝㻙䝤䝔䞁䝧䞁䝊䞁㼚㻙䝦䝥䝍䞁䝅䜽䝻䝦䜻䝃䞁㻞㻘㻟㻙䝆䝯䝏䝹䝤䝍䞁䝅䜽䝻䝨䞁䝔䞁㼠㻙㻞㻙䝦䜻䝉䞁㻞㻙䝯䝏䝹㻙㻝㻙䝨䞁䝔䞁㻞㻘㻟㻙䝆䝯䝏䝹䝨䞁䝍䞁㻝㻙䝦䝥䝔䞁䝯䝏䝹䝅䜽䝻䝦䜻䝃䞁㻞㻘㻠㻙䝆䝯䝏䝹䝨䞁䝍䞁䜶䝍䝜䞊䝹㻝㻘㻟㻙䝆䝯䝏䝹䝧䞁䝊䞁㻝㻙㼏㻘㻟㻙䝆䝯䝏䝹䝅䜽䝻䝨䞁䝍䞁㻞㻘㻞㻘㻠㻙䝖䝸䝯䝏䝹䝨䞁䝍䞁㻟㻙䝯䝏䝹㻙㼏㻙㻟㻙䝦䜻䝉䞁᤼ฟಀᩘ㻔༢఩䠖㼙㼓㻛㼗㻸㻕᤼ฟ㔞㻔༢఩䠖䝖䞁㻛ᖺ㻕ኟᖹᆒ෤ᖹᆒ඲ᖹᆒ඲ᖹᆒྜィ䝥䝺䝭䜰䝺䜼䝳䝷䝥䝺䝭䜰䝺䜼䝳䝷䝥䝺䝭䜰䝺䜼䝳䝷䝥䝺䝭䜰䝺䜼䝳䝷㻠㻤㻥㻤㻞㻝㻚㻥㻟㻣㻞㻠㻜㻣㻚㻢㻟㻟㻡㻥㻞㻞㻚㻜㻟㻞㻝㻠㻞㻤㻚㻣㻠㻝㻞㻤㻣㻝㻚㻥㻟㻠㻢㻥㻝㻤㻚㻝㻡㻣㻣㻚㻥㻝㻘㻥㻠㻞㻚㻡㻞㻘㻡㻞㻜㻚㻠㻢㻞㻡㻡㻡㻚㻡㻝㻠㻣㻟㻣㻤㻚㻞㻞㻢㻣㻢㻣㻝㻚㻠㻞㻥㻣㻝㻞㻥㻚㻡㻝㻢㻡㻝㻝㻟㻚㻠㻞㻞㻞㻞㻡㻟㻚㻤㻞㻟㻝㻚㻝㻝㻘㻞㻠㻠㻚㻠㻝㻘㻠㻣㻡㻚㻢㻝㻝㻜㻣㻞㻜㻚㻝㻞㻝㻜㻡㻣㻝㻚㻢㻟㻣㻠㻡㻢㻞㻚㻢㻞㻟㻞㻤㻝㻣㻚㻜㻞㻠㻞㻢㻠㻝㻚㻟㻞㻞㻝㻢㻥㻠㻚㻟㻟㻟㻥㻚㻢㻝㻘㻞㻠㻝㻚㻟㻝㻘㻡㻤㻝㻚㻜㻢㻞㻡㻤㻣㻚㻠㻝㻤㻞㻜㻣㻣㻚㻡㻠㻢㻞㻝㻜㻚㻜㻝㻠㻜㻡㻥㻟㻚㻞㻡㻠㻟㻥㻤㻚㻣㻝㻢㻝㻟㻟㻡㻚㻟㻣㻢㻚㻝㻥㻜㻟㻚㻟㻥㻣㻥㻚㻡㻠㻣㻥㻟㻡㻚㻜㻡㻝㻟㻤㻡㻚㻠㻟㻟㻠㻟㻠㻚㻠㻟㻝㻣㻥㻥㻚㻜㻠㻜㻢㻤㻠㻚㻣㻠㻝㻡㻥㻞㻚㻞㻡㻣㻚㻜㻞㻟㻞㻚㻥㻞㻤㻥㻚㻤㻡㻤㻢㻜㻢㻚㻞㻞㻣㻣㻞㻤㻚㻡㻞㻢㻣㻡㻥㻚㻢㻡㻠㻞㻞㻞㻚㻠㻠㻞㻢㻤㻞㻚㻥㻠㻜㻥㻣㻡㻚㻠㻡㻥㻚㻣㻞㻞㻥㻚㻠㻞㻤㻥㻚㻞㻢㻤㻟㻤㻤㻚㻝㻠㻠㻜㻜㻜㻚㻜㻠㻡㻡㻜㻞㻚㻞㻟㻟㻤㻥㻜㻚㻥㻡㻢㻥㻠㻡㻚㻝㻟㻤㻥㻠㻡㻚㻡㻣㻥㻚㻣㻞㻝㻤㻚㻝㻞㻥㻣㻚㻤㻤㻢㻢㻟㻚㻝㻠㻡㻢㻥㻡㻚㻤㻢㻞㻜㻝㻚㻣㻝㻤㻡㻣㻣㻚㻠㻣㻠㻟㻞㻚㻠㻟㻞㻝㻟㻢㻚㻢㻝㻜㻚㻠㻝㻣㻥㻚㻥㻝㻥㻜㻚㻟㻝㻜㻥㻥㻠㻚㻡㻟㻡㻝㻟㻠㻚㻠㻠㻢㻟㻣㻚㻣㻞㻡㻤㻢㻣㻚㻠㻣㻤㻝㻢㻚㻝㻟㻜㻡㻜㻜㻚㻥㻝㻜㻚㻥㻝㻣㻜㻚㻤㻝㻤㻝㻚㻣㻞㻜㻜㻟㻣㻚㻠㻝㻢㻟㻝㻡㻚㻠㻝㻟㻤㻜㻜㻚㻣㻠㻟㻡㻠㻤㻚㻤㻝㻢㻥㻝㻥㻚㻝㻞㻥㻥㻟㻞㻚㻝㻞㻟㻚㻣㻝㻢㻣㻚㻢㻝㻥㻝㻚㻟㻝㻠㻥㻡㻜㻚㻞㻝㻠㻝㻤㻜㻚㻠㻝㻜㻞㻢㻜㻚㻟㻠㻞㻣㻞㻥㻚㻠㻝㻞㻢㻜㻡㻚㻞㻞㻤㻠㻡㻠㻚㻥㻝㻣㻚㻢㻝㻡㻥㻚㻟㻝㻣㻣㻚㻜㻥㻝㻥㻡㻟㻚㻤㻞㻝㻞㻣㻝㻚㻟㻡㻡㻞㻥㻥㻚㻢㻟㻞㻥㻝㻣㻚㻤㻣㻟㻢㻞㻢㻚㻣㻞㻣㻜㻥㻠㻚㻡㻝㻜㻟㻚㻝㻝㻡㻝㻚㻣㻞㻡㻠㻚㻤㻞㻝㻥㻞㻡㻚㻤㻞㻣㻣㻠㻢㻚㻣㻝㻡㻜㻢㻜㻚㻣㻝㻡㻝㻠㻣㻚㻠㻝㻤㻠㻥㻟㻚㻟㻞㻝㻠㻠㻣㻚㻜㻞㻡㻚㻥㻝㻞㻜㻚㻝㻝㻠㻢㻚㻜㻣㻣㻜㻠㻡㻚㻡㻝㻡㻢㻝㻢㻚㻞㻠㻠㻞㻢㻟㻚㻣㻞㻠㻥㻤㻥㻚㻝㻢㻜㻢㻡㻠㻚㻢㻞㻜㻟㻜㻞㻚㻢㻤㻠㻚㻥㻝㻝㻟㻚㻣㻝㻥㻤㻚㻢㻞㻟㻞㻝㻚㻟㻝㻣㻢㻠㻝㻚㻝㻝㻣㻥㻜㻤㻚㻤㻝㻥㻥㻣㻠㻚㻡㻝㻜㻝㻝㻡㻚㻜㻝㻤㻤㻜㻣㻚㻤㻝㻠㻚㻞㻝㻜㻡㻚㻟㻝㻝㻥㻚㻡㻟㻣㻠㻥㻞㻚㻟㻞㻠㻢㻤㻠㻚㻟㻞㻜㻣㻢㻥㻚㻟㻤㻥㻠㻟㻚㻡㻞㻥㻝㻟㻜㻚㻤㻝㻢㻤㻝㻟㻚㻥㻠㻜㻚㻤㻥㻠㻚㻝㻝㻟㻠㻚㻥㻟㻣㻢㻟㻞㻚㻣㻝㻡㻤㻝㻣㻚㻠㻞㻡㻡㻡㻜㻚㻠㻝㻡㻠㻞㻤㻚㻟㻟㻝㻡㻥㻝㻚㻡㻝㻡㻢㻞㻞㻚㻤㻠㻠㻚㻞㻤㻣㻚㻡㻝㻟㻝㻚㻣㻝㻞㻟㻞㻢㻚㻡㻞㻞㻢㻤㻡㻚㻣㻤㻠㻡㻡㻚㻡㻤㻠㻥㻠㻚㻞㻝㻜㻟㻥㻝㻚㻜㻝㻡㻡㻥㻜㻚㻜㻝㻠㻚㻡㻤㻣㻚㻟㻝㻜㻝㻚㻤㻣㻜㻥㻥㻚㻟㻝㻣㻥㻡㻣㻚㻡㻢㻢㻣㻢㻚㻠㻣㻠㻟㻡㻚㻣㻢㻤㻤㻣㻚㻥㻝㻞㻢㻥㻢㻚㻢㻥㻚㻢㻣㻝㻚㻝㻤㻜㻚㻣㻞㻠㻣㻣㻜㻚㻢㻥㻡㻞㻟㻚㻡㻞㻜㻤㻣㻜㻚㻜㻝㻟㻥㻝㻤㻚㻝㻞㻞㻤㻞㻜㻚㻟㻝㻝㻣㻞㻜㻚㻤㻟㻝㻚㻥㻢㻡㻚㻢㻥㻣㻚㻢㻟㻢㻝㻝㻚㻠㻥㻜㻢㻥㻚㻠㻝㻥㻡㻤㻚㻥㻢㻣㻡㻤㻚㻜㻞㻣㻤㻡㻚㻝㻣㻥㻝㻟㻚㻣㻟㻚㻥㻠㻠㻚㻟㻠㻤㻚㻞㻠㻜㻡㻡㻚㻝㻤㻢㻝㻣㻚㻞㻞㻝㻟㻞㻚㻝㻢㻡㻝㻥㻚㻞㻟㻜㻥㻟㻚㻢㻣㻡㻢㻤㻚㻞㻠㻚㻟㻠㻞㻚㻠㻠㻢㻚㻣㻡㻤㻜㻝㻚㻤㻝㻝㻤㻡㻣㻚㻡㻟㻠㻞㻤㻚㻤㻞㻡㻝㻠㻚㻝㻠㻢㻝㻡㻚㻟㻣㻝㻤㻡㻚㻤㻢㻚㻡㻠㻜㻚㻞㻠㻢㻚㻣㻥㻥㻣㻣㻚㻡㻠㻟㻥㻟㻚㻢㻣㻡㻜㻤㻚㻜㻢㻝㻤㻠㻚㻞㻤㻣㻠㻞㻚㻤㻡㻞㻤㻤㻚㻥㻝㻞㻚㻞㻞㻥㻚㻢㻠㻝㻚㻥㻠㻟㻜㻞㻚㻜㻢㻜㻟㻤㻚㻢㻞㻠㻠㻤㻚㻞㻟㻤㻝㻥㻚㻟㻟㻟㻣㻡㻚㻝㻠㻥㻞㻤㻚㻥㻠㻚㻣㻞㻣㻚㻢㻟㻞㻚㻟㻝㻢㻣㻡㻚㻞㻠㻣㻡㻢㻚㻡㻤㻟㻥㻚㻟㻟㻟㻟㻜㻚㻣㻝㻞㻡㻣㻚㻟㻠㻜㻠㻟㻚㻢㻝㻚㻤㻞㻞㻚㻢㻞㻠㻚㻠㻥㻢㻣㻚㻟㻡㻟㻝㻣㻚㻞㻢㻣㻟㻚㻢㻝㻢㻜㻣㻚㻢㻤㻞㻜㻚㻡㻟㻠㻢㻞㻚㻠㻝㻚㻝㻝㻥㻚㻠㻞㻜㻚㻡㻡㻟㻥㻟㻚㻝㻟㻡㻢㻝㻚㻡㻟㻥㻝㻟㻚㻢㻞㻣㻥㻟㻚㻣㻠㻢㻡㻟㻚㻠㻟㻝㻣㻣㻚㻢㻢㻚㻡㻝㻣㻚㻤㻞㻠㻚㻟㻤㻢㻝㻣㻚㻥㻞㻡㻤㻞㻚㻥㻡㻢㻤㻥㻚㻣㻟㻟㻟㻤㻚㻞㻣㻝㻡㻟㻚㻤㻞㻥㻢㻜㻚㻢㻝㻜㻚㻜㻝㻢㻚㻢㻞㻢㻚㻢㻣㻜㻜㻠㻚㻠㻞㻞㻣㻤㻚㻣㻠㻝㻥㻤㻚㻟㻞㻢㻜㻜㻚㻠㻡㻢㻜㻝㻚㻟㻞㻠㻟㻥㻚㻡㻣㻚㻤㻝㻟㻚㻣㻞㻝㻚㻡㻡㻤㻝㻢㻚㻜㻝㻥㻣㻥㻚㻥㻠㻜㻟㻠㻚㻢㻞㻟㻢㻤㻚㻣㻠㻥㻞㻡㻚㻟㻞㻝㻣㻠㻚㻟㻢㻚㻥㻝㻞㻚㻞㻝㻥㻚㻝㻝㻝㻠㻥㻚㻥㻞㻠㻟㻣㻚㻞㻣㻝㻠㻚㻜㻝㻤㻣㻡㻚㻟㻥㻟㻝㻚㻥㻞㻝㻡㻢㻚㻞㻝㻚㻟㻝㻞㻚㻝㻝㻟㻚㻠㻝㻞㻥㻢㻚㻡㻞㻞㻣㻣㻚㻝㻢㻥㻝㻚㻟㻝㻣㻥㻢㻚㻥㻥㻥㻟㻚㻥㻞㻜㻟㻣㻚㻜㻝㻚㻠㻝㻝㻚㻠㻝㻞㻚㻤㻡㻥㻢㻚㻟㻞㻢㻠㻝㻚㻡㻟㻤㻞㻚㻜㻝㻞㻣㻠㻚㻜㻠㻤㻥㻚㻝㻝㻥㻡㻣㻚㻤㻜㻚㻣㻝㻝㻚㻜㻝㻝㻚㻢㻞㻣㻡㻥㻚㻞㻞㻝㻥㻢㻚㻣㻝㻢㻤㻥㻚㻠㻝㻢㻟㻢㻚㻜㻞㻞㻞㻠㻚㻟㻝㻥㻝㻢㻚㻟㻟㻚㻝㻝㻜㻚㻣㻝㻟㻚㻤㻜㻚㻜㻜㻚㻜㻤㻥㻢㻚㻜㻟㻤㻜㻡㻚㻥㻠㻠㻤㻚㻜㻝㻥㻜㻟㻚㻜㻜㻚㻢㻝㻜㻚㻣㻝㻝㻚㻟㻝㻤㻞㻞㻚㻢㻞㻟㻠㻣㻚㻞㻞㻝㻝㻢㻚㻞㻝㻝㻤㻝㻚㻟㻝㻥㻢㻥㻚㻠㻝㻣㻢㻠㻚㻟㻞㻚㻤㻥㻚㻥㻝㻞㻚㻢㻝㻜㻤㻜㻚㻠㻝㻣㻥㻞㻚㻥㻡㻤㻥㻚㻢㻝㻞㻢㻟㻚㻥㻤㻟㻡㻚㻜㻝㻡㻞㻤㻚㻠㻝㻚㻞㻤㻚㻢㻥㻚㻣㻟㻥㻝㻢㻚㻥㻝㻠㻞㻠㻚㻢㻟㻠㻠㻠㻚㻢㻝㻜㻣㻡㻚㻢㻟㻢㻤㻜㻚㻤㻝㻞㻡㻜㻚㻝㻡㻚㻞㻣㻚㻜㻝㻞㻚㻞㻤㻝㻟㻚㻣㻝㻜㻟㻢㻚㻢㻟㻡㻞㻚㻝㻝㻟㻣㻠㻚㻝㻡㻤㻞㻚㻥㻝㻞㻜㻡㻚㻠㻜㻚㻤㻢㻚㻣㻣㻚㻢

ࡢẚ㍑ࢆ⾲ 11 ࡟♧ࡋࡓࠋ5ᡂศ࡛ぢࡿ㝈ࡾࠊ⤌ᡂⓗ࡟኱ᖜྠᵝ࡟࢞ࢯࣜࣥ㈍኎ᩘ㔞࡜(3)(࢖)࡛ồࡵࡓᡂศู᤼ฟ

࡞ኚ໬ࡣ࡞࠸ࡀࠊ1,3,5-ࢺ࣓ࣜࢳࣝ࣋ࣥࢮࣥࡀࣉ࣑ࣞ࢔࢞ࢯಀᩘ࠿ࡽᡂศูࡢ᤼ฟ㔞ࢆồࡵࡓࠋ୺せ40ᡂศࡢ᤼ฟ㔞࡛ࣜࣥ኱ᖜ࡟ቑຍࡋ࡚࠸ࡿࡢࡀ≉ᚩⓗ࡛࠶ࡿࠋ࡞࠾ࠊಶู

ࢆ⾲10 ࡟ేࡏ࡚♧ࡋࡓࠋࡇࢀࡽ40ᡂศ࡛᤼ฟ㔞ࡢ99㸣ࢆἜ✀ࠊᏘ⠇࡟ࡼࡾᡂศࡢᕪࡀ࠶ࡿࡢ࡛ࠊኚືࡣ኱ࡁ࠸ࡇ࡜

༨ࡵ࡚࠸ࡿࠋ

ࢆ㋃ࡲ࠼࡚ホ౯ࡍ࡭ࡁ࡛࠶ࡿࠋ(4) 㒔ෆ᤼ฟ㔞ࡢ᥎ᐃ(࢔) ྜィ᤼ฟ㔞⾲㻝㻝䚷㻼㻾㼀㻾᤼ฟಀᩘ䛸䛾ẚ㍑5)

ୖ㏙ࡢሗ࿌᭩ ࡛ࡣࠊᖹᡂ21ᖺᗘ࡟࠾ࡅࡿᮾி㒔ࡢ࢞ࢯࣜᡂศ㻔༢఩䠖㼙㼓㻛㼗㻸㻕௒ᅇ㻼㻾㼀㻾䝥䝺䝭䜰

䝺䜼䝳䝷

䝥䝺䝭䜰

䝺䜼䝳䝷

ࣥ㈍኎ᩘ㔞ࡣࠊࣉ࣑ࣞ࢔࣒࢞ࢯࣜࣥ1,399,791 kL/ᖺࠊࣞࢠ䜶䝏䝹䝧䞁䝊䞁㻢㻡㻝㻢㻡㻣㻤㻜㻠㻢㻜㻟࣮ࣗࣛ࢞ࢯࣜࣥ5,599,165 kL/ᖺ࡜ሗ࿌ࡉࢀ࡚࠸ࡿࠋ(3)(࢖)

䜻䝅䝺䞁㻞㻘㻤㻠㻣㻞㻘㻠㻝㻣㻟㻘㻜㻥㻡㻞㻘㻟㻟㻢㻝㻘㻟㻘㻡㻙䝖䝸䝯䝏䝹䝧䞁䝊䞁䝖䝹䜶䞁㻝㻤㻟㻞㻥㻘㻝㻟㻝㻝㻞㻠㻝㻢㻘㻤㻝㻠㻝㻤㻟㻠㻘㻣㻣㻝㻝㻞㻤㻝㻟㻘㻤㻠㻞䝧䞁䝊䞁㻟㻘㻟㻣㻡㻠㻘㻥㻞㻥㻞㻘㻣㻣㻣㻟㻘㻝㻡㻠࡛ồࡵࡓἜ✀ูࡢ᤼ฟಀᩘࢆ஌ࡎࡿࡇ࡜࡟ࡼࡾࠊྜィ᤼ฟ㔞ࡣࠊࣉ࣑ࣞ࢔࣒࢞ࢯࣜࣥ࠿ࡽ1,967.1ࣥ/ᖺࠊࣞࢠ࣮ࣗࣛ࢞
ࢯࣜࣥ࠿ࡽ8,064.9ࢺࣥ/ᖺࠊྜィ࡛10,031.9ࢺࣥ/ᖺ࡜࡞ࡗࡓࠋ㸲 ࡲ࡜ࡵ ୍⯡࡟ᕷ㈍ࡉࢀ࡚࠸ࡿ࢞ࢯࣜࣥࢆᢳฟࡋࠊ⤥Ἔ᫬࡟⵨Ⓨ
ࡍࡿⅣ໬Ỉ⣲ᡂศࡢ≉ᚩ࡟ࡘ࠸࡚ㄪᰝࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝࡣࠊ௨ୗࡢ࡜࠾ࡾ࡛࠶ࡿࠋձ࢞ࢯࣜࣥࡢ୺࡞ᡂศࡣࠊࢺ࢚ࣝࣥࠊ࢖ࢯ࣌ࣥࢱࣥࠊ(7%(ࠊ࣓ࢳࣝ࣌ࣥࢱࣥࠊࢺ࣓ࣜࢳࣝ࣋ࣥࢮࣥࠊQ࣌ࣥࢱࣥ➼࡛࠶ࡿࡀࠊἜ✀࡟ࡼࡾᕪ␗ࡀࡳࡽࢀࡓࠋኟᏘ࡜෤Ꮨࡢ㐪࠸ࡣࠊ࢜ࢡࢱࣥ౯ࡢㄪᩚࡀ⾜ࢃࢀ࡚࠸ࡿࡓࡵ࡜⪃࠼ࡽࢀࡿࠋղ

⵨Ⓨ࢞ࢫࡢ୺ᡂศࡣࠊ࢖ࢯ࣌ࣥࢱࣥࡀ27㸣ࠊn-ࣈࢱࣥࡀ16㸣ࠊ࢖ࢯࣈࢱࣥࡀ13㸣ࠊn-࣌ࣥࢱࣥࡀ8㸣⛬ᗘ࡛࠶ࡗࡓࠋETBEࡣࠊ⵨Ⓨ࢞ࢫ࡛ࡣ⣙1.3㸣⛬ᗘ࡛࠶ࡗࡓࠋճ⤥Ἔ㔞ᙜࡓࡾࡢ⵨Ⓨ࢞ࢫ᤼ฟಀᩘ࡟ࡘ࠸࡚ࡣࠊ㐣ཤࡢㄪᰝ⤖ᯝ࡜ྠ➼࡛࠶ࡗࡓࠋࡇࢀ࡟ࡼࡾࠊᮾி㒔ෆࡢ⤥Ἔᡤ࠿ࡽ᤼ฟࡉࢀࡿ⵨Ⓨ࢞ࢫࡢྜィ᤼ฟ㔞ࢆ10,032ࢺࣥ/ᖺ࡜᥎ᐃࡋࡓࠋ

մ⵨Ⓨ࢞ࢫࡢᡂศู᤼ฟಀᩘࢆ᪂ࡓ࡟ồࡵࡓࠋࡇࢀࡲ࡛
3575ᑐ㇟≀㉁ࡢᡂศࡢࡳ࡛࠶ࡗࡓ᤼ฟಀᩘࡀ⵨Ⓨ࢞ࢫࡢ࡯࡜ࢇ࡝ࡢᡂศ࡟ࡘ࠸࡚ồࡵࡽࢀࡓࠋࡇࢀ࡟ࡼࡾࠊ
⵨Ⓨ࢞ࢫࡢᡂศู᤼ฟ㔞ࢆ᥎ィࡋࡓࠋཧ⪃ᩥ⊩㻌᥹Ⓨᛶ᭷ᶵ໬ྜ≀㸦VOC㸧᤼ฟ࢖ࣥ࣋ࣥࢺ᳨ࣜウ఍ࠊ᥹Ⓨᛶ᭷ᶵ໬ྜ≀㸦VOC㸧᤼ฟ࢖ࣥ࣋ࣥࢺࣜ࡟ࡘ࠸࡚ࠊ
ᖹᡂ22 ᖺ3 ᭶

PEC-2008JP-07ࠊᖹᡂ20 ᖺᗘ⮬ື㌴⇞ᩱࡢከᵝ໬࡜㧗ຠ⋡฼⏝࡟㛵ࡍࡿ◊✲㛤Ⓨᡂᯝሗ࿌᭩(ᖹᡂ20 ᖺᗘ▼Ἔ⇞ᩱḟୡ௦⎔ቃᑐ⟇ᢏ⾡㛤Ⓨ஦ᴗ)ࠊᖹᡂ21 ᖺ3
᭶ࠊ㈈ᅋἲே ▼Ἔ⏘ᴗάᛶ໬ࢭࣥࢱ࣮

͆California Non-Methane Organic Gas Test Procedures”,Amended in July 30, 2002, Air Resources Board,
California Environmental Agency.

ᮾி㒔⎔ቃᒁጤクࠊ❅⣲㓟໬≀➼᤼ฟ㔞⟬ฟㄪᰝ㸦ᅛᐃⓎ⏕※➼㸧ሗ࿌᭩ࠊᖹᡂ19ᖺ3᭶ࠊ㈈ᅋἲேィ㔞ィ⏬◊✲ᡤᖹᡂ21ᖺᗘ⤒῭⏘ᴗ┬ጤクࠊࠕᖹᡂ21ᖺᗘ໬Ꮫ≀㉁Ᏻ
඲☜ಖ࣭ᅜ㝿つไᑐ⟇᥎㐍➼㸦ࡍࡑษࡾ௨ୗ஦ᴗ⪅᤼ฟ㔞᥎ィᡭἲ࡟㛵ࡍࡿㄪᰝ㸧ሗ࿌᭩ࠖࠊᖹᡂ22ᖺ3᭶ࠊᰴᘧ఍♫⎔ቃィ⏬◊✲ᡤ