Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples
An innovative automatic purge-and-trap (P&T) system coupled with fluorimetric sequential injection (SI), for the on-line separation and preconcentration of volatile compounds, is presented. The truth of concept is demonstrated for the ammonium fluorimetric determination in environmental water sa...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/25/7/1569 |
| _version_ | 1797626417989550080 |
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| author | Athina Dimitriadou Aristidis Anthemidis |
| author_facet | Athina Dimitriadou Aristidis Anthemidis |
| author_sort | Athina Dimitriadou |
| collection | DOAJ |
| description | An innovative automatic purge-and-trap (P&T) system coupled with fluorimetric sequential injection (SI), for the on-line separation and preconcentration of volatile compounds, is presented. The truth of concept is demonstrated for the ammonium fluorimetric determination in environmental water samples with complex matrices without any pretreatment. The P&T flow system comprises a thermostated purge-vessel where ammonium is converted into gaseous ammonia and a trap-vessel for ammonia collection. This configuration results in matrix removal as well as analyte preconcentration, avoiding membrane-associated problems. All the main parameters affecting the efficiency of a P&T system were studied and optimized. The proposed method is characterized by a working range of 2.7–150.0 μg L<sup>−1</sup> of NH<sub>4</sub><sup>+</sup>, with a detection and quantification limit of 0.80 and 2.66 μg L<sup>−1</sup>, respectively, for a 10-mL sample consumption. The accuracy of the method was assessed by recovery assays in seawater, estuarine, and lake water samples as well as by the analysis of standard reference material. |
| first_indexed | 2024-03-11T10:10:06Z |
| format | Article |
| id | doaj.art-a479db4601fa441cb14db391c505ca14 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-11T10:10:06Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-a479db4601fa441cb14db391c505ca142023-11-16T14:35:16ZengMDPI AGMolecules1420-30492020-03-01257156910.3390/molecules25071569Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater SamplesAthina Dimitriadou0Aristidis Anthemidis1Laboratory of Analytical Chemistry, Department of Chemistry, Aristotle University, 54124 Thessaloniki, GreeceLaboratory of Analytical Chemistry, Department of Chemistry, Aristotle University, 54124 Thessaloniki, GreeceAn innovative automatic purge-and-trap (P&T) system coupled with fluorimetric sequential injection (SI), for the on-line separation and preconcentration of volatile compounds, is presented. The truth of concept is demonstrated for the ammonium fluorimetric determination in environmental water samples with complex matrices without any pretreatment. The P&T flow system comprises a thermostated purge-vessel where ammonium is converted into gaseous ammonia and a trap-vessel for ammonia collection. This configuration results in matrix removal as well as analyte preconcentration, avoiding membrane-associated problems. All the main parameters affecting the efficiency of a P&T system were studied and optimized. The proposed method is characterized by a working range of 2.7–150.0 μg L<sup>−1</sup> of NH<sub>4</sub><sup>+</sup>, with a detection and quantification limit of 0.80 and 2.66 μg L<sup>−1</sup>, respectively, for a 10-mL sample consumption. The accuracy of the method was assessed by recovery assays in seawater, estuarine, and lake water samples as well as by the analysis of standard reference material.https://www.mdpi.com/1420-3049/25/7/1569automationpurge-and-trapsequential injection analysisfluorimetricammonium determinationenvironmental samples |
| spellingShingle | Athina Dimitriadou Aristidis Anthemidis Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples Molecules automation purge-and-trap sequential injection analysis fluorimetric ammonium determination environmental samples |
| title | Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples |
| title_full | Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples |
| title_fullStr | Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples |
| title_full_unstemmed | Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples |
| title_short | Automatic On-Line Purge-and-Trap Sequential Injection Analysis for Trace Ammonium Determination in Untreated Estuarine and Seawater Samples |
| title_sort | automatic on line purge and trap sequential injection analysis for trace ammonium determination in untreated estuarine and seawater samples |
| topic | automation purge-and-trap sequential injection analysis fluorimetric ammonium determination environmental samples |
| url | https://www.mdpi.com/1420-3049/25/7/1569 |
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