LaMotte SMART3 Colorimeter - Manual (Page 211)

NICKEL
DIMETHYLGLYOXIME METHOD • CODE 3663-SC
QUANTITY CONTENTS CODE
60 mL *Hydrochloric Acid, 2.5N *6251PS-H
30 g *Ammonium Persulfate Reagent *6566-G
30 mL *Silver Nitrate Solution, 0.0141N *6346WT-G
250 mL Sodium Citrate, 10% 6253-K
60 mL *Dimethylglyoxime, 1% *6254-H
60 mL *Ammonium Hydroxide, Conc. *6537-H
3 Pipets, 1.0 mL, plastic 0354
1 Spoon, 0.1 g, plastic 0699
1 Test tube, 5-10-12.9-15-20-25, glass, w/cap 0608
1 Graduated Cylinder, 10 mL, glass 0416
*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.
Nickel is not usually found in natural waters except as a result of contamination
from industrial wastewaters as a corrosion product of stainless steel and nickel
alloys. Nickel may also enter surface waters from plating bath process water.
APPLICATION: Drinking and surface waters; domestic and industrial
wastewater.
RANGE: 0.00–8.00 ppm Nickel
MDL: 0.15 ppm
METHOD: Nickel under basic conditions forms a colored complex
with dimethylglyoxime in proportion to the concentration
of nickel.
SAMPLE HANDLING
& PRESERVATION:
Samples may be collected in either plastic or
glass containers and preserved by adding 5 mL of
concentrated nitric acid per liter.
INTERFERENCES: Organic matter interferes. Cobalt, iron, copper,
manganese and chromium do not interfere if each of the
concentrations is below 15 ppm.
SMART3 Test Procedures 11.10 NICKEL
Test P
rocedures