Lamotte SMART3 Colorimeter User Manual download pdf (Page 153)

COPPER – LOW RANGE

BICINCHONINIC ACID METHOD • CODE 3640-SC

QUANTITY CONTENTS CODE

50 *Copper Tablets *T-3808-H

*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.

The copper content of drinking water generally falls below 0.03 parts per million,

but copper levels as high as 1.0 part per million will give water a bitter taste.

Waters testing as high as 1.0 part per million copper have probably been treated

with a copper compound, like those used in the control of algae, or have become

contaminated from untreated industrial wastes. The addition of copper sulfate to

lakes causes an increase in the copper content of the sediments. Acid waters and

those high in free carbon dioxide may cause the corrosion or “eating away” of

copper, brass and bronze pipes and ﬁ ttings. This corrosion results in the addition

of copper into the water supply.

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

industrial wastes.

RANGE: 0.00–3.50 ppm Copper

MDL: 0.04 ppm

METHOD: Copper ions form a purple complex with bicinchoninic

acid around pH 6-7, in proportion to the concentration of

copper in the sample.

SAMPLE HANDLING

& PRESERVATION:

Copper has a tendency to be adsorbed to the surface of

the sample container. Samples should be analyzed as

soon as possible after collection. If storage is necessary,

0.5 mL of 20% HCl per 100 mL of sample will prevent

“plating out.” However, a correction must be made to

bring the reaction into the optimum pH range.

INTERFERENCES: High concentrations of oxidizing agents, calcium, and

magnesium interfere. Silver can also interfere.

SMART3 Test Procedures 11.10 COPPER, BCA, Tablet

Test Procedures

1 2 ... 148 149 150 151 152 153 154 155 156 157 158 ... 293 294

No comments

Lamotte SMART3 Colorimeter User Manual Page 153