Picomolar Detection of Lead Ions (Pb2+) by Functionally Modified Fluorescent Carbon Quantum Dots from Watermelon Juice and Their Imaging in Cancer Cells. - Kundan Singh Rawat; Vikram Singh; Chandra Prakash Sharma; Akanksha Vyas; Priyanka Pandey; Jagriti Singh; Neeraj Mohan Gupta; Monika Sachdev; Atul Goel (J. Imaging, 2023)