After nitrate was reduced by copper-coated cadmium granules,the nitrite produced was determined by diazotization of fuchsin acid and coupling to resorcinol.

　
英 美
  • 采用鍍有銅的鎘還原硝酸鹽(NO-3 )為亞硝酸鹽(NO-2 )后,于酸性條件下,將品紅與NO-2 進(jìn)行重氮化,再與間苯二酚在弱堿介質(zhì)中偶合成穩定的橙色染料。
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