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首页> 外文期刊>Mikrochimica Acta: An International Journal for Physical and Chemical Methods of Analysis >Development a robust ionic liquid-based dispersive liquid-liquid microextraction against high concentration of salt combined with flame atomic absorption spectrometry using microsample introduction system for preconcentration and determination of cobalt in water and saline samples
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Development a robust ionic liquid-based dispersive liquid-liquid microextraction against high concentration of salt combined with flame atomic absorption spectrometry using microsample introduction system for preconcentration and determination of cobalt in water and saline samples

机译：使用微量进样系统对水和盐分样品中的钴进行预浓缩和测定，开发了一种针对高浓度盐的可靠的基于离子液体的分散液-液微萃取技术，结合火焰原子吸收光谱法

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摘要

A robust ionic liquid-based method for dispersive liquid-liquid microextraction was developed for the determination of cobalt in saline samples. Its robustness was increased by introducing a common ion of the IL into the sample solution. The concentration of cobalt in the settled phase of the ionic liquid was determined by the FAAS using a homemade microsample injection valve. Under the optimized conditions, the calibration graph was linear in the concentration range from 0.4 to 120 μg L~(-1) with the detection limit of 0.1 μg L~(-1). Accuracy was checked against the ISO standard method. The method was successfully applied to the determination of cobalt in water and saline samples.
机译：建立了一种可靠的基于离子液体的分散液-液微萃取方法，用于测定盐水溶液中的钴。通过将IL的公共离子引入样品溶液，提高了其耐用性。离子液体沉降相中钴的浓度使用自制的微量进样阀通过FAAS测定。在最佳条件下，校正曲线在0.4〜120μgL〜（-1）浓度范围内呈线性，检出限为0.1μgL〜（-1）。根据ISO标准方法检查准确性。该方法已成功地用于水和盐水样品中钴的测定。

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