Manganese ion detection for low concentration manganese in drinking water Lovibond M242

Lovibond®Roewe State, Germany®water quality analysis

LovibondManganese ion detection using Pan reagent method

Method for Testing Low Concentration Manganese Ions in Drinking Water M242
Range: 0.01-0.7 mg/l

○ Reagent:Ascorbic acid powder, shielding agent solution, indicator PAN solution

○ Wavelength: 560 nm

○ Coloring dish: 24 mm

○ Response time: 2 minutes

○ Instrument:MD 100 Manganese, MD600 multi parameter portable water quality analyzer, MultiDirect multi parameter desktop water quality analyzer, XD7000 spectrophotometer, various brands of spectrophotometers

Ascorbic acid reduces oxidized manganese in 10 ml of water sample to divalent manganese ions. Shielding agents are used to eliminate interfering ions. PAN indicator combines with divalent manganese ions for color development. After 2 minutes of reaction, the manganese ion concentration is obtained by colorimetric analysis. Water samples with a hardness higher than 300 mg/l CaCO3 require dropwise addition of Rochelle salt solution.