Department of Natural and Herbal Products/Cosmetic Products, Graduate Education Institute, Duzce University, 81620, Duzce, Türkiye.
Department of Chemistry, Faculty of Art and Science, Duzce University, 81620, Duzce, Türkiye.
J Chromatogr A. 2022 Sep 13;1680:463433. doi: 10.1016/j.chroma.2022.463433. Epub 2022 Aug 19.
Green synthesis of clinoptilolite zeolite/FeO nanocomposite (MZNC) was carried out using Laurus Nobilis L. leaf extract. Characterization of this MZNC was performed using Scanning Electron Microscopy, Fourier Transform Infrared Spectroscopy, X-Ray Diffraction and Vibrating Sample Magnetometer. According to the VSM analysis results, the saturation magnetization of 23 emu/g and coercivity of 23.5 Oe indicate that the synthesized magnetic nanocomposite is superparamagnetic. A new ultrasonic assisted clinoptilolite zeolite-coated magnetic nanocomposite-based solid phase microextraction (MZNC-SPME) method combined with high performance liquid chromatography was developed for the extraction and determination of Rhodamine B. The preconcentration factor for the MZNC-SPME method was found to be 40 under optimal conditions. Under optimal conditions, the linear range, correlation coefficient (R), limit of detection (LOD), and intra- and interday relative standard deviation (RSD) were found to be 1.00-100.00 ng mL, 0.9995, 0.16 ng mL, 1.89% and 2.49%, respectively. The developed method was successfully performed to determine Rhodamine B in 6 different cosmetic samples. 6 ions and 5 different dyes were added to the sample solution to show the selectivity of the method. The obtained results show that the determination of Rhodamine B is possible in the presence of these ions and dyes. In order to determine the accuracy of the MZNC-SPME method, two different concentrations of Rhodamine B concentration in cosmetic samples were added as 10 and 50 ng mL. Extraction recoveries were found in the range of 92.03-101.52% and these results are quite satisfactory. It is seen that the developed method for the extraction and determination of Rhodamine B from cosmetic samples is applicable due to the easy synthesis of the sorbent and the short, simple, environmentally friendly and low cost of the method.
采用月桂叶提取物对沸石/FeO 纳米复合材料（MZNC）进行绿色合成。采用扫描电子显微镜、傅里叶变换红外光谱、X 射线衍射和振动样品磁强计对这种 MZNC 进行了表征。根据 VSM 分析结果，23 emu/g 的饱和磁化强度和 23.5 Oe 的矫顽力表明合成的磁性纳米复合材料是超顺磁性的。开发了一种新的基于超声辅助沸石涂覆磁性纳米复合材料的固相结合微萃取（MZNC-SPME）方法与高效液相色谱法相结合，用于罗达明 B 的提取和测定。在最佳条件下，MZNC-SPME 方法的预浓缩因子为 40。在最佳条件下，线性范围、相关系数（R）、检测限（LOD）和日内和日间相对标准偏差（RSD）分别为 1.00-100.00 ng mL、0.9995、0.16 ng mL、1.89%和 2.49%。该方法成功地用于测定 6 种不同化妆品样品中的罗达明 B。向样品溶液中加入 6 种离子和 5 种不同染料，以显示方法的选择性。结果表明，在存在这些离子和染料的情况下可以测定罗达明 B。为了确定 MZNC-SPME 方法的准确性，在化妆品样品中添加了两种不同浓度的罗达明 B 浓度，分别为 10 和 50 ng mL。提取回收率在 92.03-101.52%范围内，这些结果相当令人满意。可以看出，由于吸附剂的合成简单，且方法具有短、简单、环保和低成本的特点，因此该方法适用于从化妆品样品中提取和测定罗达明 B。
