EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF AMMONIUM ION BY DIBENZO- 18-CROWN-6 AND CALMAGITE
An extraction-spectrophotometric method for the determination of trace amounts of ammonium ion is described. Ammonium ion is effectively extracted as a neutral ternary complex NH . DB 18C6. calmagite at pH 3.0 into chloroform, followed by spectrophotometric determination at =48 5 nm. Molar absorpti...
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| Format: | Article |
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| Language: | English |
| Published: |
University of Tehran
1993-06-01
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| Series: | Journal of Sciences, Islamic Republic of Iran |
| Online Access: | https://jsciences.ut.ac.ir/article_31398_ac3c9d1f32105a6fc85ad3a172cdee87.pdf |
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| collection | DOAJ |
| description | An extraction-spectrophotometric method for the determination of trace amounts
of ammonium ion is described. Ammonium ion is effectively extracted as a neutral
ternary complex NH . DB 18C6. calmagite at pH 3.0 into chloroform, followed by
spectrophotometric determination at =48 5 nm. Molar absorptivity of the ternary
complex at this wavelength is 1.08 10 mol cm . Beer's law is obeyed over the
range 0.5-9.0 g ml and the Sandell's sensitivity for 0.001 absorbance unit is 16.7
ng cm . The method is simple, rapid and free from interferences of several cations
and anions which are usually present with NH ion in real samples |
| format | Article |
| id | doaj-art-65d730320c3949378698a90f42dbb2e5 |
| institution | OA Journals |
| issn | 1016-1104 2345-6914 |
| language | English |
| publishDate | 1993-06-01 |
| publisher | University of Tehran |
| record_format | Article |
| series | Journal of Sciences, Islamic Republic of Iran |
| spelling | doaj-art-65d730320c3949378698a90f42dbb2e52025-08-20T02:25:51ZengUniversity of TehranJournal of Sciences, Islamic Republic of Iran1016-11042345-69141993-06-014231398EXTRACTION-SPECTROPHOTOMETRIC DETERMINATION OF AMMONIUM ION BY DIBENZO- 18-CROWN-6 AND CALMAGITEAn extraction-spectrophotometric method for the determination of trace amounts of ammonium ion is described. Ammonium ion is effectively extracted as a neutral ternary complex NH . DB 18C6. calmagite at pH 3.0 into chloroform, followed by spectrophotometric determination at =48 5 nm. Molar absorptivity of the ternary complex at this wavelength is 1.08 10 mol cm . Beer's law is obeyed over the range 0.5-9.0 g ml and the Sandell's sensitivity for 0.001 absorbance unit is 16.7 ng cm . The method is simple, rapid and free from interferences of several cations and anions which are usually present with NH ion in real sampleshttps://jsciences.ut.ac.ir/article_31398_ac3c9d1f32105a6fc85ad3a172cdee87.pdf |
| spellingShingle | EXTRACTION-SPECTROPHOTOMETRIC
DETERMINATION OF AMMONIUM ION BY
DIBENZO- 18-CROWN-6 AND CALMAGITE Journal of Sciences, Islamic Republic of Iran |
| title | EXTRACTION-SPECTROPHOTOMETRIC
DETERMINATION OF AMMONIUM ION BY
DIBENZO- 18-CROWN-6 AND CALMAGITE |
| title_full | EXTRACTION-SPECTROPHOTOMETRIC
DETERMINATION OF AMMONIUM ION BY
DIBENZO- 18-CROWN-6 AND CALMAGITE |
| title_fullStr | EXTRACTION-SPECTROPHOTOMETRIC
DETERMINATION OF AMMONIUM ION BY
DIBENZO- 18-CROWN-6 AND CALMAGITE |
| title_full_unstemmed | EXTRACTION-SPECTROPHOTOMETRIC
DETERMINATION OF AMMONIUM ION BY
DIBENZO- 18-CROWN-6 AND CALMAGITE |
| title_short | EXTRACTION-SPECTROPHOTOMETRIC
DETERMINATION OF AMMONIUM ION BY
DIBENZO- 18-CROWN-6 AND CALMAGITE |
| title_sort | extraction spectrophotometric determination of ammonium ion by dibenzo 18 crown 6 and calmagite |
| url | https://jsciences.ut.ac.ir/article_31398_ac3c9d1f32105a6fc85ad3a172cdee87.pdf |