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The determination of trace elements in biodiesel is essential to assess oil qualities, identify adulterations and prevent undesirable effects in environment and in humans. However, due to the low sample concentration, sensitive instrumental techniques are required.In this work an effective and simple quantification method using water-soluble mercaptopropionic acid (MPA)-capped CdTe quantum dots (QDs)...
The present work describes the development of a fast and robust sequential injection fluorimetric procedure for the determination of Sn in juices of canned fruits. The developed automatic methodology is based on the complexation of Sn with 8-hydroxyquinoline-5-sulfonic acid (HQSA) to form a fluorimetric product (λ exc =354nm; λ em =510nm). The influence of dimethylsulfoxide (DMSO)...
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