Abstract The utilization of the magnetized Pleurotus erygnii and Coprinus micaceus with γ-Fe2O3 nanoparticles as biosorbents for magnetic solid phase extraction (MSPE) of Cd(II) were investigated in details. The surface structures of magnetized P. erygnii and C. micaceus were investigated by the Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscope (SEM) and energy dispersive X-ray (EDX). The best process conditions were tested and determined as pH 5, 3 mL min−1 flow rate, 100 mg of P. erygnii and C. micaceus on 75 mg of γ-Fe2O3 nanoparticles, 5 mL of 1 mol L−1 HCl as eluent, and 400 mL of sample volume for both biosorbents. The limit of detections (LOD) were achieved as 0.054 ng mL−1 and 0.040 ng mL−1 for magnetized P. erygnii and C. micaceus, respectively. Preconcentration factors were determined as 80 for both magnetized biosorbents. The recommended methods were validated using certificated reference materials. Cd(II) in different real samples were determined by ICP-OES (inductively coupled plasma optical emission spectrometry) after preconcentration with developed methods.

中文翻译：

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磁化杏鲍菇和云母蘑菇Cd(II)富集的比较及其在实际样品中的测定

摘要 详细研究了磁化的杏鲍菇和云母蘑菇与γ-Fe2O3 纳米颗粒作为生物吸附剂用于Cd(II) 的磁固相萃取(MSPE)。通过傅里叶变换红外 (FT-IR) 光谱、扫描电子显微镜 (SEM) 和能量色散 X 射线 (EDX) 研究了磁化 P. erygnii 和 C. micaceus 的表面结构。测试并确定最佳工艺条件为 pH 5、3 mL min-1 流速、100 mg 杏鲍菇和云母球虫在 75 mg γ-Fe2O3 纳米颗粒上，5 mL 1 mol L-1 HCl 作为洗脱液, 以及两种生物吸附剂的 400 mL 样品体积。磁化杏鲍菇和云母云母的检测限 (LOD) 分别达到 0.054 ng mL-1 和 0.040 ng mL-1。两种磁化生物吸附剂的预浓缩因子均确定为 80。推荐的方法使用经认证的参考材料进行了验证。不同实际样品中的 Cd(II) 在使用开发的方法进行预浓缩后通过 ICP-OES（电感耦合等离子体发射光谱法）测定。