Determination of Adipates in Water by Solid-phase Extraction Method.

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  • UTAGAWA Noriko
    Niigata Prefectural Research Laboratory for Health and Environment
  • IBARAKI Tsuyoshi
    Niigata Prefectural Research Laboratory for Health and Environment
  • TANABE Akiko
    Niigata Prefectural Research Laboratory for Health and Environment
  • NAKANO Yuka
    Niigata Prefectural Research Laboratory for Health and Environment
  • KAWATA Kuniaki
    Niigata Prefectural Research Laboratory for Health and Environment

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Other Title
  • 水試料中のアジピン酸エステル類の固相抽出法の検討
  • ミズ シリョウ チュウ ノ アジピンサン エステルルイ ノ コソウ チュウシュツホウ ノ ケントウ

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A solid phase extraction method was applied to determination of 9 adipates in water sample. A water sample of one liter added with di (2-ethylhexyl) adipate-d8 as a surrogate compound was passed through a SDB-XC disk after filtration with a glass-fiber filter.<BR>Adipates on the disk were eluted with 10 ml of acetone and, then 10 ml of ethyl acetate. After dehydration with anhydrous sodium sulfate, the combined eluate is concentrated to 1 ml and then added with fluorene-d10 and crysene-d12 as the internal standards for GC/MS determination.<BR>Adipates on suspended substances on the glass-fiber filter were extracted ultrasonically with 20 ml of acetone for 15 min. After centrifugation at 3000 rpm for 10 min, the extracts were concentrated to 1 ml and then added with the internal standards for GC/MS determination.<BR>The overall recoveries of the target compounds were 70.9% to 121% from filtrate of river water and 71.2% to 108% from suspended substances.

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