LaMotte SMART Spectro Spectrophotometer - Manual (Page 168)

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 a * are considered to be potential health hazards. To view
or print a Material Safety Data Sheet (MSDS) for these reagents see MSDS CD or
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
wastewaters.
RANGE: 0.00–8.00 ppm Nickel
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.
SMART SPECTRO TEST PROCEDURES 05.04 Nickel 1/2