LaMotte SMART3 Colorimeter - Manual (Page 249)

PHENOL
AMINOANTIPYRINE METHOD • CODE 3652-01-SC
QUANTITY CONTENTS CODE
5 g Aminoantipyrine Reagent 7825-C
30 mL *Ammonium Hydroxide Solution *7826-G
2 x 60 mL *Potassium Ferricyanide Solution *7827-H
1 Spoon, 0.1 g, plastic 0699
1 Pipet, plain, plastic 0352
1 Pipet, 1.0 mL, plastic 0354
*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.
Phenols may occur in domestic and industrial waste waters and in drinking water
supplies. Chlorination of waters containing phenols may produce odiferous and
objectionable tasting chlorophenols. Natural waters sedom contain more than 1
mg/L phenol.
APPLICATION: Drinking and surface waters; domestic and industrial
waste water.
RANGE: 0.00–6.00 ppm Phenol
MDL: 0.05 ppm
METHOD: 4-Aminoantipyrine is oxidized in the presence of all ortho-
and meta- substituted phenols to form a colored complex
in proportion to the amount of phenol present.
SAMPLE HANDLING
& PRESERVATION:
Phenols are subject to biological and chemical oxidation.
Samples should be analyzed within 4 hours after
collection. If sample cannot be analyzed within 4 hours,
it can be preserved by acidifi cation with phosphoric acid
to pH 4.0.
INTERFERENCES: Oxidizing and reducing chemicals, alkaline pH values,
and phenol decomposing bacteria may interfere with the
test.
SMART3 Test Procedures 2.11 PHENOL
Test P
rocedures