Detecting Rhodamine B in Water Using a Simple Carbon-Based Sensor

What is it about?

This study looked at how a dye called Rhodamine B behaves when tested with a small, low-cost carbon-based sensor. Rhodamine B can end up in water from industrial or textile processes, and as an illegal additive to food and beverages, so it’s important to monitor. The sensor works by measuring tiny electrical changes when the dye reacts. We found that Rhodamine B undergoes a series of chemical changes when electricity is applied, and these changes depend on factors such as acidity (pH). After developing the method, we tested it on real water samples and found it gave accurate results, even at very low levels. This means the approach could be a practical and reliable way to check for Rhodamine B in environmental water.

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Why is it important?

This research is important for several key reasons: Environmental Protection Rhodamine B is a synthetic dye often used in textiles and industrial processes. It can pollute rivers and lakes, harming aquatic life and potentially entering drinking water. Detecting it accurately helps prevent environmental and health risks. Affordable and Accessible Testing The method uses screen-printed carbon electrodes, which are inexpensive, portable, and easy to produce. This makes water testing more practical for routine monitoring, even in resource-limited settings. Reliable Results in Real Conditions The technique was tested on actual water samples and showed high accuracy (94% recovery). This means it works outside the lab, making it useful for real-world environmental monitoring. Supports Sustainable Practices Quick and cost-effective detection methods encourage industries and regulators to monitor pollutants more frequently, reducing long-term contamination.

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