LaMotte DC1600 Colorimeter - Manual (Page 49)

MANGANESE ~ HIGH RANGE
PERIODATE METHOD CODE 3669
QUANTITY CONTENTS CODE
10 g Manganese Buffer Reagent 6310-D
15 g *Manganese Periodate Reagent *6311-E
1 Spoon, 0.1 g, plastic 0699
1 Spoon, 0.15 g, plastic 0727
*WARNING: Reagents marked with a * are considered hazardous substances. Material Safety Data Sheets (MSDS) are supplied for
these reagents. For your safety, read label and accompanying MSDS before using.
Manganese is present in ground water in the divalent state due to the lack of oxygen. In surface waters, manganese may be
in various oxidation states as soluble complexes or as suspended compounds. Manganese is rarely present in excess of 1
mg/L. It may impart an objectionable taste or cause staining problems in laundry, but manganese levels normally
encountered in water seldom produce any health hazards. Manganese is removed from water by various means, including
chemical precipitation, pH adjustment, aeration, superchlorination and the use of ion exchange resins.
APPLICATION: Drinking and surface waters, domestic and industrial wastewaters.
RANGE: 0 – 10.0 ppm Manganese
METHOD: Periodate oxidates soluble manganous compounds to form permanganate.
SAMPLE HANDLING
& PRESERVATION: Manganese may oxidize readily in a neutral water and precipitate from solution. It may adhere
to or be absorbed by container walls, especially glass. Acidified samples can be stored in plastic.
INTERFERENCES: Reducing substances capable of reacting with periodate or permanganate must be removed or
destroyed before the periodate oxidation is attempted.
49