Browsing by Subject "Waters"

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    • Determinacion de hierro en fase solida por espectrofotometria derivada de segundo orden 
      Toral Ponce, María; Lara, Nelson; Gomez, Javier; Richter Duk, Pablo (Sociedad Chilena de Quimica, 2001)
      A microdetermination of iron at sub-μg/L level by derivative spectrophotometry has been developed. The compound TPTZ (2, 4, 6-tripyridyl-1, 3, 5-triazine) was used as chromogenic reagent to form a blue complex (pH = 5. 0), ...