RecordNumber
:
439
Doc. No.
:
F204
Call. No.
:
204
Author
:
Ensafi, Ali A. and Keyvanfard, M.
Title of Article
:
Selective kinetic spectrophotometric determination of nitrite in food and water
Title Of Periodical
:
Analytical Letters
VolumNumber
:
V.27, N.1
Date
:
1994
Page
:
P.168-182
Descriptors
:
Kinetic,Nile blue b,Nitrite,Food,Water
Abstract
:
Highly selective and sensitive method for the kinetic spectrophothometrith determination of sub-microgram amounts of nitrite has been development based d on its reaction with Nile blue 2B in acidic medium. The reaction is monitoreerd spectrophotocometrically at 595 nm at a fixed time of 4.5 min. The change in absorbance at 595 nm is related to the concentration of nitrite in the ranange 0.005 - 1.100 Mg.ml**-1. The detection limit is 0.001 Mg.ml**-1. The relalation standard deviation is 1,for 0.020 mg.ml**-1. The relation standard deviation is 1,for 0.020 Mg.ml**-1 of nitrite for ten replicate measurements. MMost common anions and cations do not interfere. The procedure was applied to the determination of trace amounts of nitrite in sausage and water.
Indexer
:
1376/11/28,Shahsvary
اطلاعات ثبت
:
GN135144
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