聚酰胺-胺树枝状大分子修饰纳米粒子作为吸附剂用于环境水样中四溴双酚 A 和 4-壬基酚的磁性固相萃取。
Polyamidoamine dendrimer decorated nanoparticles as an adsorbent for magnetic solid-phase extraction of tetrabromobisphenol A and 4-nonylphenol from environmental water samples.
机构信息
State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, College of Chemical Engineering and Environment, China University of Petroleum Beijing, Beijing 102249, China.
State Key Laboratory of Heavy Oil Processing, State Key Laboratory of Petroleum Pollution Control, College of Chemical Engineering and Environment, China University of Petroleum Beijing, Beijing 102249, China.
出版信息
J Colloid Interface Sci. 2019 Mar 15;539:361-369. doi: 10.1016/j.jcis.2018.12.064. Epub 2018 Dec 17.
Polyamidoamine dendrimer decorated FeO magnetic nanoparticles were successfully synthesized by Michael addition with methyl acrylate and amidation with ethylenediamine. The decorated magnetic particles were utilized as an effective adsorbent for magnetic solid-phase extraction of tetrabromobisphenol A and 4-nonylphenol at trace levels from environmental water samples. A number of parameters such as generation number, ionic strength, adsorbent dosage, eluent, adsorption time, elution volume, elution time, pH, humic acid and sample volume were optimized. Under the optimal conditions, a wide linearity was achieved in the range of 0.1-500 μg L of the analytes with the correlation coefficients (R) of 0.9985-0.9995. The limits of detection were approximately 0.011 μg L of tetrabromobisphenol A and 0.017 μg L of 4-nonylphenol. Satisfactory average recoveries of the analytes ranged from 93.2% to 101.1%. The results indicated that the decorated magnetic nanoparticles can be suitable for extraction of phenols from environmental water samples. The proposed method was sensitive, effective, practical and robust for the determination of tetrabromobisphenol A and 4-nonylphenol in environmental water samples.
聚酰胺-胺树枝状大分子修饰的 FeO 磁性纳米粒子通过迈克尔加成与甲基丙烯酸酯和与乙二胺的酰胺化成功合成。修饰后的磁性颗粒被用作一种有效的吸附剂，用于从环境水样中痕量水平的四溴双酚 A 和 4-壬基酚的磁性固相萃取。优化了许多参数，如代数、离子强度、吸附剂用量、洗脱液、吸附时间、洗脱体积、洗脱时间、pH 值、腐殖酸和样品体积。在最佳条件下，分析物在 0.1-500μg/L 的范围内具有较宽的线性范围，相关系数（R）为 0.9985-0.9995。四溴双酚 A 的检测限约为 0.011μg/L，4-壬基酚的检测限约为 0.017μg/L。分析物的平均回收率在 93.2%-101.1%之间。结果表明，修饰后的磁性纳米粒子可适用于从环境水样中萃取酚类化合物。该方法灵敏、有效、实用且稳定，可用于环境水样中四溴双酚 A 和 4-壬基酚的测定。
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