LaMotte SMART Spectro Spectrophotometer - Manual (Page 218)

PHENOL
AMINOANTIPYRINE METHOD • CODE 3652-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 seldom contain more than 1
mg/L phenol.
Phenols may be removed from water by various treatment processes including
chlorination and activated carbon absorption.
APPLICATION: Drinking and surface waters; domestic and industrial
wastewaters.
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.
SMART Spectro Test Procedures 2.11 PHENOL
Test P
rocedures