18967191 |
Wang GF, Satake M, Horita K: Spectrophotometric determination of nitrate and nitrite in water and some fruit samples using column preconcentration. Talanta. 1998 Aug;46(4):671-8.
These cations were coupled with sodium 1-naphthol-4-sulfonate (NS) in the pH range 9.0-12.0 for the SAM-NS system, pH 8.6-12.0 for the SM-NS system and pH 9.4-12.0 for the SD-NS system to be retained on naphthalene-tetradecyldimethylbenzylammonium (TDBA)-iodide (I) adsorbent packed in a column. |
33(0,1,1,3) |
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