Lamotte SMART3 Colorimeter User Manual download pdf (Page 79)

ALUMINUM

ERIOCHROME CYANINE R METHOD

CODE 364I-01-SC

QUANTITY CONTENTS CODE

5 g *Aluminum Inhibitor Reagent *7865-C

2 x 120 mL *Aluminum Buffer Reagent *7866-J

120 mL Aluminum Indicator Reagent 7867-J

15 mL Aluminum Complexing Reagent 7868-E

1 Spoon, 0.05 g, plastic 0696

2 Pipets, 1.0 mL, plastic 0354

1 Test Tube, glass, 5 mL w/cap 0230

*WARNING: Reagents marked with an * are considered to be potential health

hazards. To view or print a Material Safety Data Sheet (MSDS) for these reagents

go to www.lamotte.com. To obtain a printed copy, contact LaMotte by e-mail,

phone or fax.

Aluminum is the third most common element in the earth’s crust, which accounts

for its wide appearance in many water supplies. Aluminum exists in water as

soluble salts, colloidal compounds, and insoluble compounds. In wastewater that

has been treated by alum coagulation it will appear in one or more of the above

forms. Properly treated drinking water should have an aluminum concentration

below 0.05 mg/L.

APPLICATION: Drinking, surface, and saline waters; domestic and

industrial wastewater.

RANGE: 0.00–0.30 ppm Aluminum

MDL: 0.01 ppm

METHOD: Aluminum ions buffered to a pH of 6.0 react with

Eriochrome Cyanine R dye to produce a pink to red

complex in proportion to the concentration.

SAMPLE HANDLING

& PRESERVATION:

Collect sample in acid washed glass or plastic bottle.

Analyze as soon as possible.

INTERFERENCES: Fluoride and polyphosphate will interfere. Interference

from iron and manganese is eliminated by the addition of

an inhibitor.

SMART3 Test Procedures 11.10 ALUMINUM

Test Procedures

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Lamotte SMART3 Colorimeter User Manual Page 79