2段階液/液抽出法による水中のダラポンのLC/MS分析 LC/MS Analysis of Dalapon in Water using Two-step Liquid-liquid Extraction

この論文にアクセスする

この論文をさがす

著者

抄録

A simple pre-concentration method of dalapon (2,2-dichloropropionic acid) in water for LC/MS analysis by two-step liquid-liquid extraction is proposed. Dalapon was extracted from 200 m<i>l</i> of water sample containing 2 m<i>l</i> of sulfuric acid and 80 g of sodium chloride into 10 m<i>l</i> of methyl-<i>t</i>-butyl ether (MTBE). Then, dalapon was back-extracted from 5 m<i>l</i> portion of the MTBE extract into 1 m<i>l</i> of aqueous solution (water, several concentrations of sodium hydroxide solution or phosphate buffer solution). An aliquot of the aqueous phase was directly injected to LC/MS apparatus. Recovery of dalapon depended on equilibrium pH after the second step extraction. The best recovery was observed in the pH range from 6 to 8. When the phosphate buffer solution (pH 6.87) was used as the aqueous phase in the second step extraction, no change in the pH value of the aqueous phase was observed between before and after extraction. Therefore, phosphate buffer solution was suitable for the second step extraction.<br>The recovery of dalapon (0.0008 mg/<i>l</i>) by the proposed method was about 120 % and the relative standard deviation of five replicate runs was below 3 %. This method is satisfactorily applicable to LC/MS analysis of detection limit of dalapon (0.0008 mg/<i>l</i>) in tap water provided by the Ministry of Health Labour and Welfare of Japan.

収録刊行物

  • 環境化学 : journal of environmental chemistry

    環境化学 : journal of environmental chemistry 17(1), 53-58, 2007-03-25

    Japan Society for Environmental Chemistry

参考文献:  12件中 1-12件 を表示

各種コード

  • NII論文ID(NAID)
    10018894060
  • NII書誌ID(NCID)
    AN10547099
  • 本文言語コード
    JPN
  • 資料種別
    NOT
  • ISSN
    09172408
  • NDL 記事登録ID
    8756291
  • NDL 雑誌分類
    ZN5(科学技術--建設工学・建設業--都市工学・衛生工学) // ZP1(科学技術--化学・化学工業)
  • NDL 請求記号
    Z16-2322
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ