Abstract
A mixture of captopril nanoparticles (CAP-NPs) and ionic liquid (IL, [HMIM] [PF6]) paste on micro graphite rod (CAP-IL-MGR) and was used for separation cadmium in human serum and urine samples by micro solid phase extraction (μ-SPE). 0.01 g of CAP-NPs and 0.1 g of [HMIM] [PF6] mixed with 1 mL of acetone and mixture passed physically on micro graphite rod (MGR) at 55oC. Then, the graphite probe placed on 10 mL of human biological samples with 5 min of sonication, then cadmium ions complexed by thiol group of captopril (CAP-SH) at pH=5.5. The cadmium ions on micro probe were back extracted with 0.25 mL of nitric acid (0.5 M) which was diluted with DW up to 0.5 mL and finally, the cadmium concentration determined by ET-AAS. By optimizing of amount of captopril, the absorption capacity and recovery were obtained 132.4 mg g-1 and more than 96%, respectively.
Highlights
Different chemical factories release toxic heavy metals such cadmium, lead and mercury in air, water, soil and it slowly enter to tissues of plants and animals by vary sources of erosion and abrasion of soils, forest fires and volcanic eruptions [1,2,3]
A new sorbent based on captopril nanoparticles (CAP-NPs) passed on micro graphite rod (MGR) with IL was used for separation of cadmium from blood and urine samples by micro solid phase extraction(μ-SPE).All samples analyzed by electro-thermal atomic absorption spectrometer (ET-atomic absorption spectrometry (AAS))
Characterizations of CAP-NPs The characterization of CAP nanomaterials on MGR were achieved by X-ray diffraction spectroscopy (XRD) (Fig. 3), scanning electron microscopy (SEM) (Fig. 4), Fourier transform
Summary
Different chemical factories release toxic heavy metals such cadmium, lead and mercury in air, water, soil and it slowly enter to tissues of plants and animals by vary sources of erosion and abrasion of soils, forest fires and volcanic eruptions [1,2,3]. Cadmium with special properties such as, low melting temperature, corrosion resistance, rapid ion electrical exchange activity, high electrical and thermal conductivity can be used in battery factories [2] A new sorbent based on CAP-NPs passed on MGR with IL was used for separation of cadmium from blood and urine samples by micro solid phase extraction(μ-SPE).All samples analyzed by electro-thermal atomic absorption spectrometer (ET-AAS). Apparatus and Reagents Cadmium was determined with electro-thermal atomic absorption spectrometer (ET-AAS Varian, USA) which was equipped with graphite furnace accessory (GFA). The CAP physically passed on MGR based on IL was used as solid phase for extraction cadmium from blood samples. Extraction Procedure By μ-SPE procedure, the CAP-IL-MGR was used for separation and determination cadmium in of blood/serum/urine samples by ET-AAS. The concentration of cadmium in DW as a blank sample was determined by μ-SPE method (Fig. 2)
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