In this work we present the possibility of using a sensor based on luminescent carbon nanostructures (CNS), which is a good alternative to multi-step methods of determining heavy metal ions and cancerogenic substances. The approach is based on the principles of "green chemistry," effective, simple, fast. As a part of the work, the influence of various synthetic conditions on the CNS sensitivity to the presence of different ions was studied. It was found that sensors based on different polysaccharides are sensitive to the presence of dichromate ions in the solution.
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