Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy
The optimum reaction parameters for the interaction of hexavalent chromium [Cr(VI)] with diphenylcarbazide in microfluidic chips (μFIA) with thermal-lens microscopic detection were selected. The characteristic feature of the applied flow scheme is the injection of the reagent into the stream contain...
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| Format: | Article |
| Language: | English |
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Slovenian Chemical Society
2016-12-01
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| Series: | Acta Chimica Slovenica |
| Subjects: | |
| Online Access: | https://journals.matheo.si/index.php/ACSi/article/view/2549 |
| _version_ | 1818498684255469568 |
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| author | Tatyana Gor’kova Mingqiang Liu Mikhail Alekseevich Proskurnin Mladen Franko |
| author_facet | Tatyana Gor’kova Mingqiang Liu Mikhail Alekseevich Proskurnin Mladen Franko |
| author_sort | Tatyana Gor’kova |
| collection | DOAJ |
| description | The optimum reaction parameters for the interaction of hexavalent chromium [Cr(VI)] with diphenylcarbazide in microfluidic chips (μFIA) with thermal-lens microscopic detection were selected. The characteristic feature of the applied flow scheme is the injection of the reagent into the stream containing the test metal, which enables in-field and real-time monitoring of Cr(VI) simply by flowing the sample continuously through the microchip. The limit of detection of Cr(VI) under the selected conditions (signal generating wavelength, 514.5 nm; excitation power, 100 mW; detection position, 10 cm downstream from the mixing zone of the microchip; flow rate 10 μL min–1; injection volume, 1.4 μL) is 15 ng mL–1 (2.9×10–7 mol L–1). The linear range is 40 ng mL–1 – 10 μg mL–1 with a relative standard deviation no higher than 10% in the concentration range 0.1–1 μg mL–1. The online monitoring by this scheme provides the possibility of up to 360 analyses per hour. |
| first_indexed | 2024-12-10T20:18:54Z |
| format | Article |
| id | doaj.art-fa4285f97599421587eedd8157b126b9 |
| institution | Directory Open Access Journal |
| issn | 1318-0207 1580-3155 |
| language | English |
| last_indexed | 2024-12-10T20:18:54Z |
| publishDate | 2016-12-01 |
| publisher | Slovenian Chemical Society |
| record_format | Article |
| series | Acta Chimica Slovenica |
| spelling | doaj.art-fa4285f97599421587eedd8157b126b92022-12-22T01:35:07ZengSlovenian Chemical SocietyActa Chimica Slovenica1318-02071580-31552016-12-0163477278010.17344/acsi.2016.2549418Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens MicroscopyTatyana Gor’kova0Mingqiang Liu1Mikhail Alekseevich Proskurnin2Mladen Franko3M.V. Lomonosov Moscow State UniversityUniversity of Nova Gorica, Nova Gorica 5000M.V. Lomonosov Moscow State UniversityUniversity of Nova Gorica, Nova Gorica 5000The optimum reaction parameters for the interaction of hexavalent chromium [Cr(VI)] with diphenylcarbazide in microfluidic chips (μFIA) with thermal-lens microscopic detection were selected. The characteristic feature of the applied flow scheme is the injection of the reagent into the stream containing the test metal, which enables in-field and real-time monitoring of Cr(VI) simply by flowing the sample continuously through the microchip. The limit of detection of Cr(VI) under the selected conditions (signal generating wavelength, 514.5 nm; excitation power, 100 mW; detection position, 10 cm downstream from the mixing zone of the microchip; flow rate 10 μL min–1; injection volume, 1.4 μL) is 15 ng mL–1 (2.9×10–7 mol L–1). The linear range is 40 ng mL–1 – 10 μg mL–1 with a relative standard deviation no higher than 10% in the concentration range 0.1–1 μg mL–1. The online monitoring by this scheme provides the possibility of up to 360 analyses per hour.https://journals.matheo.si/index.php/ACSi/article/view/2549photothermal lensingthermal-lens microscopic detectionmicrofluidic applicationsμFIAhexavalent chromiumdiphenylcarbazide |
| spellingShingle | Tatyana Gor’kova Mingqiang Liu Mikhail Alekseevich Proskurnin Mladen Franko Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy Acta Chimica Slovenica photothermal lensing thermal-lens microscopic detection microfluidic applications μFIA hexavalent chromium diphenylcarbazide |
| title | Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy |
| title_full | Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy |
| title_fullStr | Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy |
| title_full_unstemmed | Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy |
| title_short | Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy |
| title_sort | determination of trace cr vi with diphenylcarbazide by μfia thermal lens microscopy |
| topic | photothermal lensing thermal-lens microscopic detection microfluidic applications μFIA hexavalent chromium diphenylcarbazide |
| url | https://journals.matheo.si/index.php/ACSi/article/view/2549 |
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