Cadmium separation in human biological samples based on captopril-ionic liquid paste on graphite rod before determination by electrothermal atomic absorption spectrometry

K. Azami, M. Aliomrani, M. Mobarake
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引用次数: 3

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.
电热原子吸收光谱法测定前用石墨棒卡托普利离子液体膏体分离人体生物样品中的镉
将卡托普纳米颗粒(CAP-NPs)与离子液体(IL, [HMIM] [PF6])的混合物贴在微石墨棒(CAP-IL-MGR)上,采用微固相萃取(μ-SPE)分离人血清和尿液中的镉。将0.01 g CAP-NPs和0.1 g [HMIM] [PF6]与1 mL丙酮和混合物混合,在55℃下物理通过微石墨棒(MGR)。然后,将石墨探针置于10 mL人体生物样品上,超声5 min,然后在pH=5.5条件下,将镉离子与巯基卡托普利(CAP-SH)络合。用0.25 mL (0.5 M)硝酸(DW稀释至0.5 mL)反提微探针上的镉离子,最后用ET-AAS法测定镉浓度。通过对卡托普利用量的优化,其吸收率为132.4 mg g-1,回收率为96%以上。
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CiteScore
2.10
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