• 主页
  • 查找结果
  • Use of nanoporous Cu(II) ion imprinted polymer as a new sorbent for preconcentration of Cu(II) in water, biological, and agricultural samples and its determination by electrothermal atomic absorption spectrometry.

Use of nanoporous Cu(II) ion imprinted polymer as a new sorbent for preconcentration of Cu(II) in water, biological, and agricultural samples and its determination by electrothermal atomic absorption spectrometry.

Journal of AOAC International (2014-08-26)
Hamid Fazelirad, Mohammad Ali Taher, Hamid Ashkenani
摘要

A new and selective Cu(ll) ion imprinted polymer was prepared by formation of 1-(2-pyridylazo)-2-naphthol complex for selective extraction and preconcentration of Cu ions. Polymerization was performed with ethylene glycol dimethacrylate as a crosslinking monomer and methacrylic acid as a functional monomer in the presence of 2,2'-azobis(isobutyronitrile) as an initiator via a bulk polymerization method. The Cu(ll) imprinted polymeric particles were characterized by scanning electron microscopy and IR spectrometry. The imprint Cu ion was removed from the polymeric matrix using 2 M HNO3. Optimum pH for maximum sorption was 5-8. Maximum sorbent capacity and the enrichment factor for Cu(ll) were 11.3 mg/g and 100, respectively. The RSD and LOD of the method were evaluated as +/-4.3% and 8.7 ng/L, respectively. The proposed method is simple, highly selective, and sensitive and can be applied to the determination of ultratrace amounts of Cu in water, biological, and agricultural samples.

材料
货号
品牌
产品描述

Sigma-Aldrich
乙腈, suitable for HPLC, gradient grade, ≥99.9%
Sigma-Aldrich
二甲基亚砜, Hybri-Max, sterile-filtered, BioReagent, suitable for hybridoma, ≥99.7%
Sigma-Aldrich
二甲基亚砜, for molecular biology
Sigma-Aldrich
二甲基亚砜, anhydrous, ≥99.9%
Sigma-Aldrich
乙腈, anhydrous, 99.8%
Sigma-Aldrich
二甲基亚砜, ACS reagent, ≥99.9%
Sigma-Aldrich
乙腈, HPLC Plus, ≥99.9%
Sigma-Aldrich
二甲基亚砜, sterile-filtered, BioPerformance Certified, meets EP, USP testing specifications, suitable for hybridoma
Sigma-Aldrich
2,2′-偶氮(2-甲基丙腈), 98%
Sigma-Aldrich
二甲基亚砜, suitable for HPLC, ≥99.7%
Sigma-Aldrich
二甲基亚砜, ReagentPlus®, ≥99.5%
Sigma-Aldrich
二甲基亚砜, ≥99.5% (GC), suitable for plant cell culture
Sigma-Aldrich
乙腈, suitable for HPLC, gradient grade, ≥99.9%
Sigma-Aldrich
乙二醇二甲基丙烯酸酯, 98%, contains 90-110 ppm monomethyl ether hydroquinone as inhibitor
Sigma-Aldrich
甲基丙烯酸, contains 250 ppm MEHQ as inhibitor, 99%
Sigma-Aldrich
乙腈 溶液, contains 0.1 % (v/v) trifluoroacetic acid, suitable for HPLC
Sigma-Aldrich
乙腈, ACS reagent, ≥99.5%
Sigma-Aldrich
二甲基亚砜, puriss. p.a., ACS reagent, ≥99.9% (GC)
Sigma-Aldrich
二甲基亚砜, meets EP testing specifications, meets USP testing specifications
Sigma-Aldrich
乙腈, suitable for HPLC-GC, ≥99.8% (GC)
Sigma-Aldrich
二甲基亚砜, BioUltra, for molecular biology, ≥99.5% (GC)
Sigma-Aldrich
铜, powder, <425 μm, 99.5% trace metals basis
Sigma-Aldrich
铜, foil, thickness 0.25 mm, 99.98% trace metals basis
Sigma-Aldrich
乙腈 溶液, contains 0.1 % (v/v) formic acid, suitable for HPLC
Sigma-Aldrich
二甲基亚砜, PCR Reagent
Sigma-Aldrich
铜, wire, diam. 1.0 mm, ≥99.9%
Sigma-Aldrich
1-(2-吡啶偶氮)-2-萘酚, indicator grade
Sigma-Aldrich
二甲基亚砜, puriss. p.a., dried, ≤0.02% water
Sigma-Aldrich
乙腈, HPLC Plus, ≥99.9%, poly-coated bottles
Supelco
乙腈, Pharmaceutical Secondary Standard; Certified Reference Material