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Conference information: Abstracts, 15th Iranian Chemistry Congress

Abstract: Acetylsalicylic acid (ASA) known as aspirin, is a pharmaceutical product with anti-inflammatory, analgesic, and antipyretic qualities. ASA is widely used in curing fever and headache caused by cold and is also great effective in Alzheimer’s disease, cardiovascular disease [1]. Combination of SPME with electrochemistry derives a new sample preparation method, called electrochemically controlled solid phase microextraction (EC-SPME). The EC-SPME with modified solid phase electrodes have been applied to the detections of metal ions or cations [2] and anions (chloride, nitrite, bromide, nitrate, sulfate, and phosphate) [3]. Overoxidizedpolypyrrole (OPPy) films templeted with salicylate (SA) have been utilized as conducting molecular imprinted polymer (CMIP) for potential-induced selective solid-phase micro-extraction. Various important fabrication factors controlling the performance of the OPPy films have been investigated using fluorescence spectrometry. The measured fluorescence intensity was related to the concentration of SA taken up into the films. Several key parameters such as applied potential for uptake, release, pH of uptake and release solution were varied to achieve the optimum micro-extraction procedure. The film template with SA exhibited excellent selectivity over some interference. The calibration graphs were linear in the ranges of between 5×10-8 to 5×10-4mol mL-1 and detection limit was 2×10-8mol mL-1. The OPPy film as the solid-phase microextraction absorbent has been applied for the selective clean-up and quantification of trace amounts of SA from 8 physiological samples. Scanning electron microscopy (SEM) has confirmed the nano-structure morphology of the films
Template and target information: Acetylsalicylic acid, ASA, aspirin