Faculty of Sciences, Department of Chemistry, Erciyes University, 38039, Kayseri, Turkey.
Young Researchers Club, Shahr-e-Qhods Branch, Islamic Azad University, Tehran, Iran.
Mikrochim Acta. 2017 Dec 7;185(1):34. doi: 10.1007/s00604-017-2548-x.
Nanosized single crystal orthorhombic BiWO was synthesized by a hydrothermal method and used as a sorbent for vortex assisted solid phase extraction of lead(II). The crystal and molecular structure of the sorbent was examined using XRD, Raman, SEM and SEM-EDX analysis. Various parameters affecting extraction efficiency were optimized by using multivariate design. The effect of diverse ions on the extraction also was studied. Lead was quantified by flame atomic absorption spectrometry (FAAS). The recoveries of lead(II) from spiked samples (at a typical spiking level of 200-400 ng·mL) are >95%. Other figures of merit includes (a) a detection limit of 6 ng·mL, (b) a preconcentration factor of 50, (c) a relative standard deviation of 1.6%, and (d) and adsorption capacity of 6.6 mg·g. The procedure was successfully applied to accurate determination of lead in (spiked) pomegranate and water samples. Graphical abstract Nanosized single crystal orthorhombic BiWO was synthesized and characterized by a hydrothermal method and used as a sorbent for vortex assisted solid phase extraction of lead(II). The procedure was successfully applied to accurate determination of lead in (spiked) pomegranate and water samples.
纳米尺寸的单斜相 BiWO 采用水热法合成，并用作涡旋辅助固相萃取铅（II）的吸附剂。采用 XRD、Raman、SEM 和 SEM-EDX 分析对吸附剂的晶体和分子结构进行了研究。通过多元设计优化了影响萃取效率的各种参数。还研究了不同离子对萃取的影响。采用火焰原子吸收光谱法（FAAS）定量测定铅。从加标样品（典型加标水平为 200-400ng·mL）中回收铅（II）的回收率>95%。其他优点包括：(a) 检测限为 6ng·mL，(b) 预浓缩因子为 50，(c) 相对标准偏差为 1.6%，和 (d) 吸附容量为 6.6mg·g。该方法成功应用于（加标）石榴和水样中铅的准确测定。
