CADMIUM
PAN METHOD • CODE 4017-01
QUANTITY CONTENTS CODE
60 mL *Buffered Ammonia Reagent *4020-H
15 mL Sodium Citrate, 10% 6253-E
30 mL *PAN Indicator *4021-G
30 mL Stabilizing Reagent 4022-G
1 Pipet, 1.0 mL, plastic 0354
2 Pipet, 0.5 mL, plastic 0369
Cadmium is used in batteries, paint pigments, electroplating processes, and
with other metals in the preparation of alloys. The solubility of cadmium in natural
water is proportional to the hardness or alkalinity of the water. Cadmium is not an
essential nutrient for plants and animals. It is extremely toxic and can accumulate in
the kidneys and liver.
APPLICATION: Drinking and surface waters; domestic and industrial
wastewater.
RANGE: 0.00–1.00 ppm Cadmium
MDL: 0.04 ppm
METHOD: PAN (1-[2-Pyridylazo]-2-Naphthol) forms a red complex
with Cadmium (Cd
+2
) at a pH of 10.
SAMPLE
HANDLING &
PRESERVATION:
Analyze sample as soon as possible. If sample must be
stored, acidify with nitric acid to a pH below 2.
INTERFERENCES: Ag
+2
, Co
+2
, Cu
+2
, Mn
+2
, Ni
+2
, Zn
+2
, Y
+3
, In
+3
SMART3 Test Procedures 11.10 CADMIUM
Test Procedures
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