Ultrasound-assisted emulsification magnetic microextraction: a fast and green method for the determination of triazole fungicides in fruit juice

2014 ◽  
Vol 6 (20) ◽  
pp. 8328-8336 ◽  
Author(s):  
Yubo Li ◽  
Xiaoling Yang ◽  
Jiaheng Zhang ◽  
Min Li ◽  
Xuhao Zhao ◽  
...  
Keyword(s):  
Fruit Juice ◽  
Green Method ◽  
Triazole Fungicides ◽  
Ultrasound Assisted

Determination of Fungicides in Fruit Juice by Ultrasound-Assisted Dispersive Liquid–Liquid Microextraction Based on Solidification of Floating Organic Solvent Droplets Followed by High Performance Liquid Chromatography

2014 ◽  
Vol 97 (1) ◽  
pp. 183-187 ◽  
Author(s):  
Run-Zhen Fan ◽  
Congyun Liu ◽  
Wenqing Jiang ◽  
Xiaonan Wang ◽  
Fengmao Liu
Keyword(s):  
Organic Solvent ◽  
High Performance ◽  
Fruit Juice ◽  
Enrichment Factors ◽  
Wide Range ◽  
Separation And Preconcentration ◽  
Ultrasound Assisted ◽  
Dispersive Liquid Liquid Microextraction ◽  
Liquid Microextraction

Abstract Ultrasound-assisted dispersive liquid–liquid microextraction (UA-DLLME) based on solidification of the floating organic solvent droplets (SFO) combined with HPLC was used for determination of five fungicides in fruit juice samples. 1-Dodecanol, which has a low density and low toxicity, was used as the extraction solvent in UA-DLLME. The solidification of floating organic dropletsfacilitates the transfer of analytes from the aqueous phase to the organic phase. This method was easy, quick, inexpensive, precise, and linear over a wide range. Under the optimized conditions, the enrichment factors for a 5 mL fruit juice sample were 25 to 56, and the LODs for the five fungicides ranged from 5 to 50 μg/L. The average recoveries ranged from 71.8 to 118.2% with RSDsof 0.9 to 13.9%. Application of the DLLME-SFO technique allows successful separation and preconcentration of the fungicides at a low concentration level in fruit juice samples.

A new liquid–liquid microextraction method by ultrasound assisted salting-out for determination of triazole pesticides in water samples coupled by gas chromatography-mass spectrometry

2015 ◽  
Vol 7 (3) ◽  
pp. 1194-1199 ◽  
Author(s):  
Xin-Yi Xu ◽  
Jing-qing Ye ◽  
Jing Nie ◽  
Zu-Guang Li ◽  
Maw-Rong Lee
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Quantitative Determination ◽  
Gas Chromatography Mass Spectrometry ◽  
Green Method ◽  
Salting Out ◽  
Pesticides In Water ◽  
Ultrasound Assisted ◽  
Liquid Microextraction

A simple, fast and green method termed “ultrasound assisted salting-out homogeneous liquid–liquid microextraction (UASO-HLLME)” has been developed and validated for the quantitative determination of triazole pesticides in water.

Determination of β-carotene and total carotenoids in fruit juices using surfactant surface decorated graphene oxide based ultrasound-assisted dispersive solid-phase microextraction

2018 ◽  
Vol 10 (28) ◽  
pp. 3540-3551 ◽  
Author(s):  
Chinawooth Sakaew ◽  
Phitchan Sricharoen ◽  
Nunticha Limchoowong ◽  
Saksit Chanthai
Keyword(s):  
Graphene Oxide ◽  
Solid Phase Microextraction ◽  
Fruit Juice ◽  
Solid Phase ◽  
Surface Polarity ◽  
Total Carotenoids ◽  
Modify Surface ◽  
Ultrasound Assisted ◽  
Β Carotene

In this study, the influence of surfactants (SDS, TX100 and CTAB) to modify surface polarity of graphene oxide adsorbent is proposed for the extraction of β-carotene and total carotenoids from fruit juice samples.

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