LaMotte SMART Spectro Spectrophotometer - Manual (Page 162)

MANGANESE–HIGH RANGE
PERIODATE METHOD • CODE 3669-SC
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 to be potential health hazards. To view
or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD or
www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail, phone or fax.
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: 0.0–15.0 ppm Manganese
METHOD: Periodate oxidizes soluble manganous compounds into
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.
SMART SPECTRO TEST PROCEDURES 05.04 Manganese–HR 1/2