Name
Abstract | ||
|---|---|---|
We describe the use of a paper-based probe impregnated with a vanadium-containing polyoxometalate anion, [PMo11VO40](5-), on screen-printed carbon electrodes for the electrochemical determination of chlorate. Cyclic voltammetry (CV) and chronocoulometry were used to characterize the ClO3- response in a pH = 2.5 solution of 100 mM sodium acetate. A linear CV current response was observed between 0.156 and 1.25 mg/mL with a detection limit of 0.083 mg/mL (S/N > 3). This performance was reproducible using [PMo11VO40](5-)-impregnated filter paper stored under ambient conditions for as long as 8 months prior to use. At high concentration of chlorate, an additional catalytic cathodic peak was seen in the reverse scan of the CVs, which was digitally simulated using a simple model. For chronocoulometry, the charge measured after 5 min gave a linear response from 0.625 to 2.5 mg/mL with a detection limit of 0.31 mg/mL (S/N > 3). In addition, the slope of charge vs. time also gave a linear response. In this case the linear range was from 0.312 to 2.5 mg/mL with a detection limit of 0.15 mg/mL (S/N > 3). Simple assays were conducted using three types of soil, and recovery measurements reported. |
Year | DOI | Venue |
|---|---|---|
2018 | 10.3390/s18020328 | SENSORS |
Keywords | Field | DocType |
chlorate,electrochemical detection,paper-based probe,electrocatalysis,polyoxometalates | Chlorate,Detection limit,Analytical chemistry,Filter paper,Cyclic voltammetry,Linear range,Engineering,Electrochemistry,Electrode,Sodium acetate | Journal |
Volume | Issue | ISSN |
18 | 2.0 | 1424-8220 |
Citations | PageRank | References |
0 | 0.34 | 2 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Lisa C. Shriver-Lake | 1 | 1 | 1.38 |
| dan zabetakis | 2 | 5 | 2.38 |
| Walter J. Dressick | 3 | 0 | 0.34 |
| David A. Stenger | 4 | 1 | 0.70 |
| Scott A. Trammell | 5 | 9 | 3.83 |