Sahmetlioglu Ertugrul, Yilmaz Erkan, Aktas Ece, Soylak Mustafa
Nigde University, Faculty of Sciences and Arts, Chemistry Department, 51100 Nigde, Turkey.
Erciyes University, Faculty of Sciences, Chemistry Department, 38039 Kayseri, Turkey.
Talanta. 2014 Feb;119:447-51. doi: 10.1016/j.talanta.2013.11.044. Epub 2013 Nov 27.
A multi-walled carbon nanotubes-polypyrrole conducting polymer nanocomposite has been synthesized, characterized and used for the separation and preconcentration of lead at trace levels in water samples prior to its flame atomic absorption spectrometric detection. The analytical parameters like pH, sample volume, eluent, sample flow rate that were affected the retentions of lead(II) on the new nanocomposite were optimized. Matrix effects were also investigated. Limit of detection and preconcentration factors were 1.1 µg L(-1) and 200, respectively. The adsorption capacity of the nanocomposite was 25.0mg lead(II) per gram composite. The validation of the method was checked by using SPS-WW2 Waste water Level 2 certified reference material. The method was applied to the determination of lead in water samples with satisfactory results.
一种多壁碳纳米管-聚吡咯导电聚合物纳米复合材料已被合成、表征，并用于水样中痕量铅的分离和预富集，然后进行火焰原子吸收光谱检测。对影响铅（II）在新型纳米复合材料上保留的分析参数，如pH值、样品体积、洗脱液、样品流速等进行了优化。还研究了基体效应。检测限和预富集因子分别为1.1 μg L⁻¹和200。该纳米复合材料的吸附容量为每克复合材料25.0 mg铅（II）。通过使用SPS-WW2废水二级标准物质对该方法进行了验证。该方法应用于水样中铅的测定，结果令人满意。
