Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7584444 | Food Chemistry | 2018 | 8 Pages |
Abstract
Conventional magnetic effervescent tablet has many drawbacks, such as not practicable for field processing, rapid moisture absorption, and poor tablet storage characteristics. Herein, we developed a novel magnetic effervescent tablet containing ionic liquid microextraction (MET-ILM) for determination of pyrethroids in dairy milk. It contains only Na2CO3 as an alkali source (no acidic source) in the Fe3O4 magnetic tablet; the CO2-forming reaction is initiated in the acidic solution containing the analytes, and thus the prepared tablet can be stored for long time periods without deterioration. The combined action of extractant and sorbent vastly increase the extraction efficiency. The optimized procedure consisted of an effervescent tablet, 2:1 HCl:Na2CO3, and 60â¯Î¼L [C6MIM]PF6 as extraction solvent. The LODs for five pyrethroids were 0.024-0.075â¯Î¼gâ¯kgâ1 with recoveries of 78.3-101.8%. The RSDs were <4.8% and <6.3% for intra- and inter-day precisions. Overall, the method is very feasible for use in the field.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Peipei Zhou, Kai Chen, Man Gao, Jingang Qu, Zhanen Zhang, Randy A. Dahlgren, Yanyan Li, Wei Liu, Hong Huang, Xuedong Wang,