AI Article Synopsis
- A new sensor for detecting trace levels of agrochemical pesticides, specifically diphenylamine (DPA), was developed using a strontium pyrophosphate and sulfur-doped graphitic carbon nitride nanocomposite.
- The sensor's effectiveness was confirmed through various analytical techniques, and it showed strong electrochemical performance, achieving a notable anodic peak current.
- Under optimal conditions, the sensor demonstrated excellent detection capabilities, with a low limit of detection, a broad linear range, and high reproducibility, successfully identifying DPA in real fruit samples like pears and apples.
Article Abstract
The development of a viable sensor for agrochemical pesticides requires the assessment of trace levels. To achieve this, we developed a diphenylamine (DPA) sensor using needle-like strontium pyrophosphate embedded in sulfur-doped graphitic carbon nitride (SrPO/SCN). We obtained needle-like SrPO/SCN nanocomposite through co-precipitation followed by ultrasonication. The formation of the SrPO/SCN nanocomposite was verified through FT-IR, XRD, XPS, SEM-EDX, and HR-TEM analyses. Additionally, we explored their electrochemical behavior towards DPA using differential pulse voltammetry (DPV) and cyclic voltammetry (CV). The SrPO/SCN nanocomposite-modified electrode exhibited a higher anodic peak current (15.47 µA) than those of the other modified and unmodified electrodes. Under optimal experimental conditions, SrPO/SCN/GCE demonstrated a good limit of detection (0.009 µmol/L), dynamic linear range (0.05-98 µmol/L), and sensitivity (0.36 µAµMcm). Furthermore, the developed sensor exhibited excellent reproducibility, selectivity, and stability, and successfully detected DPA in real samples, including pear and apple samples, with good recoveries.
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| http://dx.doi.org/10.1016/j.foodchem.2023.137874 | DOI Listing |
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Article Synopsis
- A new sensor for detecting trace levels of agrochemical pesticides, specifically diphenylamine (DPA), was developed using a strontium pyrophosphate and sulfur-doped graphitic carbon nitride nanocomposite.
- The sensor's effectiveness was confirmed through various analytical techniques, and it showed strong electrochemical performance, achieving a notable anodic peak current.
- Under optimal conditions, the sensor demonstrated excellent detection capabilities, with a low limit of detection, a broad linear range, and high reproducibility, successfully identifying DPA in real fruit samples like pears and apples.
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