Hanna-instruments HI 83214 Instrukcja Użytkownika Pobierz pdf (Strona 54)

INTERFERENCES

Interference may be caused by:

Arsenate at any level

Silica above 50 mg/L

Sulfide above 9 mg/L.

To eliminate sulfide: add Bromine Water drop-wise until a pale yellow color develops; remove Bromine

Water excess by adding Phenol solution drop-wise.

Turbidity and suspended matter in large amounts may cause interference because the strongly acidic

reaction conditions may dissolve suspended matter or cause desorption of phosphates from particles. Before

measurement, turbidity or suspended matter should be removed by treatment with active carbon and by

prior filtration.

Phosphorus, Acid Hydrolyzable

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 71 72

Brak uwag

Hanna-instruments HI 83214 Instrukcja Użytkownika Strona 54