Polyvinyl chloride coated paper postmodified by nucleophilic substitution with diphenylamine to enhance cation-π interactions with opioids in saliva samples

RAFAEL LUCENA RODRIGUEZ2026-01-292026-01-29202410.1016/j.microc.2024.1107322-s2.0-85193212504https://www.scopus.com/inward/record.uri?eid=2-s2.https://ucocris.uco.es/handle/123456789/37783Analytical ChemistrySpectroscopyPolyvinyl chloride coated paper postmodified by nucleophilic substitution with diphenylamine to enhance cation-π interactions with opioids in saliva samplesresearch article