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Determination of ultra trace amount Chromium in water samples with the 1-( 2-PyridylAzo )-2-Naphthol , ( PAN ) by the bromate ion in sulfuric acid with kinetic spectrophotometric method
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jahromi, Mohamad Reza Froudi Zandifar, Samira Pakdaman, Ehsan Tavakoli, Fatemeh Bagheri, Saideh |
| Copyright Year | 2016 |
| Abstract | A new kinetic spectrophotometic method for the determination of trace amount Chromium (III) in Tea real samples has been described based on it s the catalytic effect on the oxidations of 1 ( 2 – PyridylAzo ) 2 Naphthol, (PAN), by potassium bromated in sulfuric acid. The reaction is followed spectrophotometrically by measuring the decrease in the absorbance at 469 nm. Under the optimum conditions of0.2 molL sulfuric acid, 1.0 × 10 molL, 1( 2 -PyridylAzo ) 2 Naphthol, (PAN), 0.01 molL potassium bromate at 35C, calibration graph in the rang of 0.001-0.06 ngL Chromium (III). Concentration was obtained with detection limit of 0.2303 g mL by the fixed-time method of 5.5 min. The relative standard deviation for 0.05ngL Chromium (III) is %90. No serious interference was identified. The applicability of the method was demonstrated by the determination of the Chromium (III) in Water, Vegetables and blood samples. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://jptc.srbiau.ac.ir/article_8718_c34be3790670616a75f5657f3055f371.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
