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Basalt fibers coated with nano-calcium carbonate for in-tube solid-phase microextraction and online analysis of estrogens coupled with high-performance liquid chromatography†
Analytical Methods ( IF 3.1 ) Pub Date : 2018-04-30 00:00:00 , DOI: 10.1039/c7ay02979a
Xiuqin Wang 1, 2, 3, 4, 5 , Juanjuan Feng 1, 2, 3, 4, 5 , Jiaqing Feng 1, 2, 3, 4, 5 , Yu Tian 1, 2, 3, 4, 5 , Chuannan Luo 1, 2, 3, 4, 5 , Min Sun 1, 2, 3, 4, 5
Affiliation  

Estrogens have caused many serious problems due to their serious effects on the environment and organisms. The aim of this study was to analyze the estrogens in environmental samples using in-tube solid-phase microextraction coupled with high performance liquid chromatography. Nano-calcium carbonate was used as an extraction coating to modify basalt fibers. The scanning electron micrograph clearly showed that the nano-calcium carbonate was successfully attatched to the surface of the basalt fiber. Some factors including the extraction volume, sampling rate, organic solvent content and desorption time were investigated with respect to the extraction efficiency of five estrogens. Under the optimized extraction conditions, a simple and sensitive analytical method was developed, and showed low limits of detection (0.05–0.30 μg L−1), wide linear ranges (0.15–20 μg L−1), good linearity (r > 0.9989) and satisfactory repeatability (relative standard deviation < 4.1%). The recoveries of the method for the targets in two water samples ranged from 87% to 120%, with a relative standard deviation of less than 4.9%.

中文翻译:

纳米碳酸钙包覆的玄武岩纤维用于管内固相微萃取,结合高效液相色谱对雌激素进行在线分析

雌激素由于其对环境和生物的严重影响而引起许多严重的问题。这项研究的目的是使用管内固相微萃取结合高效液相色谱法分析环境样品中的雌激素。纳米碳酸钙用作提取涂层以改性玄武岩纤维。扫描电子显微镜照片清楚地表明,纳米碳酸钙已成功地吸附到玄武岩纤维的表面。针对五种雌激素的提取效率,研究了提取量,采样率,有机溶剂含量和脱附时间等因素。在优化的萃取条件下,开发了一种简单而灵敏的分析方法,并显示出较低的检测限(0.05–0.30μgL-1),宽线性范围(0.15–20μgL -1),良好的线性度( r > 0.9989)和令人满意的可重复性(相对标准偏差<4.1%)。该方法在两个水样中对目标物的回收率从87%到120%不等,相对标准偏差小于4.9%。
更新日期:2018-04-30
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