What are the methods of the determination of the black drug
Ding ammonium aerofloat is a superior collector and frother, determination of the presence of ammonium butyl aerofloat and to study its use effect plays an important role, so the current determination method of butyl ammonium aerofloat, mainly has the following kinds: ultraviolet spectrophotometry, ferrous ling color - visible spectrophotometry, copper reagent chromogenic - visible spectrophotometry.
A certain concentration of butyl ammonium aerofloat solution, it poured into 1 cm dish, with ultraviolet-visible spectrophotometer in the wavelength range of 200 ~ 280 nm absorption spectrum scanning, determine its wave and the wave to absorb again after the peak absorbance for determination of the location.
The photore-visible spectrophotometry
To take 10ml of the known concentration of butanol and the aironine solution 2ml of the 125ml liquid funnel, add 15ml of extract and shake 10min for more than half an hour.
Remove the organic phase and pour 1 cm over the dish.
With ultraviolet-visible spectrophotometer in 380-600 - nm wavelength range, absorption spectrum scanning, determine its crest and waveform is consistent, determination of absorbance of absorption peak position again.