Pretreatment and preconcentration methods for hydroxylamine in environmental water samples using solid-phase extraction, followed by a spectrophotometric determination

DOI NDL Digital Collections Web Site Web Site 5 Citations 23 References

Bibliographic Information

Other Title
  • 固相抽出法による環境水中ヒドロキシルアミンの前処理及び前濃縮／吸光光度定量法
  • コソウ チュウシュツホウ ニ ヨル カンキョウ スイチュウ ヒドロキシルアミン ノ マエ ショリ オヨビ マエ ノウシュク キュウコウ コウド テイリョウホウ

Search this article

Abstract

Hydroxylamine has been determined by combining oxidation to nitrite with iodine and the usual Griess-Romijin method. This iodine oxidation technique, however, has been inapplicable to the determination of hydroxylamine in environmental water due to interferences from nitrite and salinity. We developed a pretreatment method for determining hydroxylamine in environmental water based on the above-mentioned technique. Nitrite in a water sample was converted to a red azo dye with sulfanilic acid (diazo component) and N-1-naphthyletylenediamine (coupling component); the azo dye was then removed using a Sep-Pak C18 cartridge. We thus prepared a nitrite-free water sample. On the other hand, the interference from the salinity was solved by adding artificial seawater to sample to enhance the salinity to greater than 5‰. The salinity in a standard solution of hydroxylamine for a calibration curve was also prepared using the standard solution with >5‰. In addition, the proposed method using a Sep-Pak C18 cartridge was applicable to concentrate azo dye derived from hydroxylamine in water samples.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 52 (9), 747-753, 2003

    The Japan Society for Analytical Chemistry

Citations (5)*help

See more

References(23)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top