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A new solidified effervescent tablet-assisted dispersive liquid–liquid microextraction for the analysis of fungicides in fruit juice samples
Analytical Methods ( IF 2.7 ) Pub Date : 2017-12-11 00:00:00 , DOI: 10.1039/c7ay02406a Elif Yıldız 1, 2, 3, 4, 5 , Hasan Çabuk 1, 2, 3, 4, 5
Analytical Methods ( IF 2.7 ) Pub Date : 2017-12-11 00:00:00 , DOI: 10.1039/c7ay02406a Elif Yıldız 1, 2, 3, 4, 5 , Hasan Çabuk 1, 2, 3, 4, 5
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A simple and rapid pretreatment method based on effervescent tablet-assisted dispersive liquid–liquid microextraction was introduced for the determination of three fungicides (azoxystrobin, chlorothalonil, and cyprodinil) in fruit juice samples followed by liquid chromatography-ultraviolet detection. The effervescent tablet composed of sodium dihydrogen phosphate, sodium carbonate and 1-dodecanol was prepared in a simple way. The ingredients consisting of the above three components were manually blended in an empty medicine strip and cooled in a refrigerator. Hence, an effervescent tablet was obtained within 5 min without the need for a press machine thanks to the solidification of 1-dodecanol at room temperature. In situ generation of carbon dioxide during the microextraction process enabled the dispersion of the extractant within the aqueous phase and enhanced the contact area both between phases. Under the optimized conditions, the extraction recoveries ranged from 53 to 88%. Good linearity was observed by the square of correlation coefficients better than 0.9980. Relative standard deviations were less than 4.8% for intra-day and 7.6% for inter-day precision at a concentration of 3.0 μg L−1 of each analyte. Limits of detection ranged from 0.09 (chlorothalonil) to 0.19 μg L−1 (azoxystrobin). The proposed new method was successfully applied for the analysis of three fungicides in real samples of fruit juices and satisfactory recoveries (76–104%) were achieved.
中文翻译：
一种新型的固化泡腾片辅助液体-液体微萃取技术，用于分析果汁样品中的杀菌剂
介绍了一种基于泡腾片辅助分散液-液微萃取的简单，快速的预处理方法，用于测定果汁样品中的三种杀菌剂（嘧菌酯，百菌清和cyprodinil），然后进行液相色谱-紫外检测。以简单的方法制备由磷酸二氢钠，碳酸钠和1-十二烷醇组成的泡腾片。将由上述三种成分组成的成分在空的药条中手动混合，然后在冰箱中冷却。因此，由于1-十二烷醇在室温下的固化，因此不需要压机就可在5分钟内获得泡腾片。原位在微萃取过程中产生二氧化碳可以使萃取剂在水相中分散，并增加两相之间的接触面积。在最佳条件下，提取回收率在53％到88％之间。相关系数的平方优于0.9980，观察到良好的线性。在每种分析物浓度为3.0μgL -1的情况下，日内相对标准偏差小于4.8％，日间精度小于7.6％。检出限为0.09（百菌清）至0.19μgL -1（嘧菌酯）。所提出的新方法已成功用于果汁中真实样品中三种杀菌剂的分析，回收率令人满意（76-104％）。
更新日期：2017-12-11
中文翻译：
一种新型的固化泡腾片辅助液体-液体微萃取技术，用于分析果汁样品中的杀菌剂
介绍了一种基于泡腾片辅助分散液-液微萃取的简单，快速的预处理方法，用于测定果汁样品中的三种杀菌剂（嘧菌酯，百菌清和cyprodinil），然后进行液相色谱-紫外检测。以简单的方法制备由磷酸二氢钠，碳酸钠和1-十二烷醇组成的泡腾片。将由上述三种成分组成的成分在空的药条中手动混合，然后在冰箱中冷却。因此，由于1-十二烷醇在室温下的固化，因此不需要压机就可在5分钟内获得泡腾片。原位在微萃取过程中产生二氧化碳可以使萃取剂在水相中分散，并增加两相之间的接触面积。在最佳条件下，提取回收率在53％到88％之间。相关系数的平方优于0.9980，观察到良好的线性。在每种分析物浓度为3.0μgL -1的情况下，日内相对标准偏差小于4.8％，日间精度小于7.6％。检出限为0.09（百菌清）至0.19μgL -1（嘧菌酯）。所提出的新方法已成功用于果汁中真实样品中三种杀菌剂的分析，回收率令人满意（76-104％）。
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