Improved Metal Cation Optosensing Membranes through the Incorporation of Sulphated Polysaccharides.

ABSTRACT: Optosensing chitosan-based membranes have been applied for the detection of heavy metals, especially in drinking water. The novelty of this study is based on the use of sulphated polysaccharides, in such optosensing membranes, aiming at an improved analytical performance. The sulphated polysaccharides, such as ulvan, fucoidan and chondroitin sulfate, were extracted from by-products and wastes of marine-related activities. The membranes were developed for the analysis of aluminum. The variation in the visible absorbance of the sensor membranes after the contact between the chromophore and the aluminum cation was studied. The membranes containing sulphated polysaccharides showed improved signals when compared to the chitosan-only membrane. As for the detection limits for the membranes contai

SUBMITTER: Santos PRM 

PROVIDER: S-EPMC9370371 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature