LaMotte SMART3 Colorimeter - Manual (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 P
rocedures