Test Procedures
COPPER, DDC
DIETHYLDITHIOCARBAMATE METHOD • CODE 3646-SC
QUANTITY
CONTENTS
CODE
15 mL
*Copper 1
*6446-E
*WARNING:
Reagents marked with an * are considered to be potential health hazards. To
view or print a Safety Data Sheet (SDS) for these reagents go to www.lamotte.com.
Search for the four digit reagent code number listed on the reagent label, in the contents
list or in the test procedures. Omit any letter that follows or precedes the four digit code
number. For example, if the code is 4450WT-H, search 4450. To obtain a printed copy,
contact LaMotte by email, phone or fax.
Emergency information for all LaMotte reagents is available from Chem-Tel:
(US, 1-800-255-3924) (International, call collect, 813-248-0585).
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:
Cupric ions form a yellow colored chelate with
diethyldithiocarbamate around pH 9-10 in proportion to the
concentration of copper in the sample.
Drinking, surface, and saline waters; domestic and industrial
wastes.
RANGE:
0.00–6.00 ppm Copper
ML:
0.05 ppm
METHOD:
Cupric ions form a yellow colored chelate with
diethyldithiocarbamate around pH 9-10 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% hydrochloric acid 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:
Bismuth, cobalt, mercurous, nickel and silver ions and
chlorine (6 ppm or greater) interfere and must be absent.
SMART Spectro 2 Test Procedures 05.02.16
COPPER
, DDC
www.
GlobalScientificSupply
.com
GLOBAL SCIENTIFIC SUPPLY
The Laboratory Supply Company!
