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首页> 外文期刊>Analytical methods >Centrifugal microextraction tube-cloud point extraction coupled with gas chromatography for simultaneous determination of six phthalate esters in mineral water
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Centrifugal microextraction tube-cloud point extraction coupled with gas chromatography for simultaneous determination of six phthalate esters in mineral water

机译：离心微萃取管浊点萃取-气相色谱法同时测定矿泉水中的六种邻苯二甲酸酯

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摘要

A home-made centrifugal microextraction tube (CMET) was developed and applied to cloud point extraction coupled with microwave-assisted back extraction and gas chromatographic separation of six phthalate esters (PAEs) from mineral water. All phthalate esters were entrapped in the micelles of the non-ionic surfactant Triton X-114 and removed from the bulk phase by centrifugation. The obtained surfactant-rich phase was treated with water-immiscible solvents, and the target analytes were back extracted by short-term microwave application and determined by GC-FID directly. The whole process was finished in the CMET. The proposed method demonstrated good performance concerning linearity (R-2 = 0.9977-0.9998), precision (2.3-5.7%), the limits of detection and quantitation (LOD, 11.5-19.3 mu g L-1; LOQ, 37.0-63.3 mu g L-1), spiked recoveries (89.1-96.3%) and enrichment factor (71-85). The proposed method was successfully applied for the determination of trace amount of phthalate esters in mineral water. DBP and BBP were found in actual mineral water samples.
机译：开发了一种家用离心微萃取管（CMET），并将其应用于浊点萃取，微波辅助反萃取以及从矿泉水中分离六种邻苯二甲酸酯（PAE）的气相色谱法。将所有邻苯二甲酸酯截留在非离子型表面活性剂Triton X-114的胶束中，并通过离心将其从本体相中除去。用与水不混溶的溶剂处理所得的富含表面活性剂的相，然后通过短期微波应用反萃取目标分析物，并直接通过GC-FID测定。整个过程在CMET中完成。提出的方法在线性（R-2 = 0.9977-0.9998），精密度（2.3-5.7％），检测和定量限（LOD，11.5-19.3μg L-1; LOQ，37.0-63.3 mu）方面表现出良好的性能g L-1），加标回收率（89.1-96.3％）和富集系数（71-85）。该方法已成功用于矿泉水中痕量邻苯二甲酸酯的测定。在实际的矿泉水样品中发现了DBP和BBP。

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