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1,3,3-Trimethyl-2-[3-(1,3,3-trimethyl-1,3-dihydroindol-2-ylidene)propenyl]-3H- indolium Chloride, a Highly Sensitive Reagent for the Spectrophotometric Determination of Selenium
Balogh, I. S. and Andruch, V. 1,3,3-Trimethyl-2-[3-(1,3,3-trimethyl-1,3-dihydroindol-2-ylidene)propenyl]-3H- indolium Chloride, a Highly Sensitive Reagent for the Spectrophotometric Determination of Selenium Chemical Papers, Vol.59, No. 5, 2005, 347-349
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n595a347.pdf
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595a347.pdf |
application/pdf |
126.58KB |
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| Author(s) |
Balogh, I. S.
Andruch, V.
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| Title |
1,3,3-Trimethyl-2-[3-(1,3,3-trimethyl-1,3-dihydroindol-2-ylidene)propenyl]-3H- indolium Chloride, a Highly Sensitive Reagent for the Spectrophotometric Determination of Selenium
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| Journal name |
Chemical Papers
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| Publication date |
2005
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| Year available |
2005
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| Volume number |
59
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| Issue number |
5
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| ISSN |
0366-6352
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| Start page |
347
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| End page |
349
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2005
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| Language |
english
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| Subject |
250000 Chemical Sciences
250300 Organic Chemistry
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| Abstract/Summary |
A highly sensitive spectrophotometric method for the determination of selenium is reported. The method is based on the oxidation of iodide by selenium(IV) and the spectrophotometric detection of the liberated iodine in the form of an ion associate with 1,3,3-trimethyl-2-[3-(1,3,3-trimethyl-1,3- dihydroindol-2ylidene)propenyl]-3H-indolium chloride reagent. The appropriate reaction conditions have been established. The molar absorptivity is 2.4 × 105 dm3mol−1cm−1 at 556 nm wavelength. The absorbance of the coloured extracts obeys the Beer’s law in the range from 0.01 to 3.84 mg dm−3 of Se(IV).
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