Abstract：
:A simple and sensitive flow injection (FI) method for the determination of iodate is proposed. The method is based on the reaction of iodate with hydroxylamine in acidic solution. Sulfanilamide is diazotised by the nascent nitrite and the diazonium ion produced is then coupled with N-(1-naphthyl)ethyenediamine in hydrochloric acid medium to form an azo dye which is measured spectrophotometrically. The calibration graph for iodate is linear in the range of 0.1-30mgL-1 with a correlation coefficient of 0.9992. The limit of detection and relative standard deviation are 0.02mgL-1 and 1.2% (5mgL-1, n=8). The method has been applied to the determination of iodate in table salts and accuracy was assessed through recovery experiments and independent analysis by a conventional titrimetric method.
journal_name
Food Chemjournal_title
Food chemistryauthors
Shabani AMH,Ellis PS,McKelvie IDdoi
10.1016/j.foodchem.2011.04.077subject
Has Abstractpub_date
2011-11-15 00:00:00pages
704-707issue
2eissn
0308-8146issn
1873-7072pii
S0308-8146(11)00643-1journal_volume
129pub_type
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