Polarographic determination of nitrite in waters, meat and sausage products
AB-127
pt_BR
<p>Nitrite can be determined polarographically after its conversion to diphenylnitrosamine (C<sub>6</sub>H<sub>5</sub>)<sub>2</sub>NNO. Potassium thiocyanate is used as a catalyst in order for the conversion to proceed rapidly and quantitatively. The reaction takes place in acid solution at a pH value of approx. 1.5. The limit of quantification is 5 μg/L NO<sub>2</sub><sup>-</sup>.</p>
Nitrite can be determined polarographically after its conversion to diphenylnitrosamine (C6H5)2NNO. Potassium thiocyanate is used as a catalyst in order for the conversion to proceed rapidly and quantitatively. The reaction takes place in acid solution at a pH value of approx. 1.5. The limit of quantification is 5 μg/L NO2-.