English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Herein, we have presented a novel bare eye detection method which is based on the anion competing for a metal receptor with a chromogenic indicator. In this essay, there are highly specific interactions among the anions and the metal ions and 4-(2-Pyridylazo) resorcinol (PAR) probe in a competition assay format. The system designing is simple and it is fast in operation so that is promising than other methods because it did not need organic solvents, preparation and separation processes, chemical modification and equipped devices. In this way, Cd 2+  and Cu 2+  ions were detected by changing colour from yellow to light orange and red, respectively (in aqueous solution), which could be distinguished by naked eyes. The selectivity of these complexes towards anions wassurveyed by competition experiments in the presence of different anions. The obtained results were shownin which there were variations in the UV-Vis spectrum and colour of the solution of the [PAR-Cd 2+ ] in the presence of SO 32-  and PO 43-  anions. The high sensitivity and selectivity for phosphate and sulphite were obtained by changing the metal ions. That is, by using Cu 2+  instead of Cd 2+ in the PAR-metal, only SO 32-  anion was detected and the detection limit of SO 32-  ion was obtained 1.20 µmol L −1 . This novel system has employed for simultaneous determination SO 32-  and PO 43-  anions in some real samples by changing the metal ion in the complex. Furthermore, the INHIBIT molecular logic gate was obtained using chemical inputs (Cu 2+  and SO 32- ) and UV-Vis absorbance signals as the output.

international journal of environmental analytical chemistry

Simultaneous detection of SO 3                  2-  and PO 4                  3-  anions, in aqueous solutions based on 4-(2-Pyridylazo) resorcinol (PAR) as a colorimetric chemosensor and analytical applications