Abstract A novel automatic versatile sequential injection solvent dispersive micro solid phase extraction platform coupled with flame atomic absorption spectrometry is developed for the first time. The analytical procedure is based on chemical dispersion of benzophenone and ternary component systems. The full dispersion of sorbent into the aqueous phase, in the shape of micro particles, is achieved by on-line mixing of the two flows; a small flow of methanol containing the sorbent in a low concentration and a higher one of the aqueous sample solution. The resulted cloudy mixture is consisted of sorbent's fine particles, which are dispersed into the whole aqueous phase. Via this continuous process, metal chelating complexes are retained onto the sorbent particles. An integrated, easy and fast reusable syringe filter was studied for the on-line collection and dissolution of the sorbent. The potentials of this novel schema were demonstrated for trace Pb(II) determination in water samples. All the critical parameters affecting the performance of the proposed method were optimized. For a sample consumption of 11.0 mL, the working range was 5.28–400.0 μg L−1, while the enhancement factor, the detection limit and the relative standard deviation were 120, 1.59 μg L-1 and 2.4% (at 50.0 μg L−1) respectively. The developed method was evaluated by analyzing certified reference materials and applied to the analysis of environmental water samples.

中文翻译：

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连续进样溶剂分散微固相萃取 (SI-SD-μSPE) 平台结合原子吸收光谱法测定水样中的铅

摘要 首次开发了一种新型的自动多功能顺序进样溶剂分散微固相萃取平台结合火焰原子吸收光谱法。分析程序基于二苯甲酮和三元组分系统的化学分散。吸附剂完全分散到水相中，呈微粒状，是通过两种流的在线混合实现的；一小股含有吸附剂的低浓度甲醇和较高浓度的样品水溶液。所得混浊混合物由分散在整个水相中的吸附剂的细颗粒组成。通过这种连续过程，金属螯合复合物被保留在吸附剂颗粒上。一个集成的，研究了用于在线收集和溶解吸附剂的简单快速的可重复使用的针头过滤器。证明了这种新模式的潜力可用于测定水样中的痕量 Pb(II)。对影响所提方法性能的所有关键参数进行了优化。对于 11.0 mL 的样品消耗量，工作范围为 5.28–400.0 μg L-1，而增强因子、检测限和相对标准偏差分别为 120、1.59 μg L-1 和 2.4%（在 50.0 μg L- 1) 分别。开发的方法通过对有证标准物质的分析进行评估，并应用于环境水样的分析。对影响所提方法性能的所有关键参数进行了优化。对于 11.0 mL 的样品消耗量，工作范围为 5.28–400.0 μg L-1，而增强因子、检测限和相对标准偏差分别为 120、1.59 μg L-1 和 2.4%（在 50.0 μg L- 1) 分别。开发的方法通过对有证标准物质的分析进行评估，并应用于环境水样的分析。对影响所提方法性能的所有关键参数进行了优化。对于 11.0 mL 的样品消耗量，工作范围为 5.28–400.0 μg L-1，而增强因子、检测限和相对标准偏差分别为 120、1.59 μg L-1 和 2.4%（在 50.0 μg L- 1) 分别。开发的方法通过对有证标准物质的分析进行评估，并应用于环境水样的分析。