Dispersive solid-phase extraction for the determination of trace organochlorine pesticides in apple juices using reduced graphene oxide coated with ZnO nanocomposites as sorbent

2017 ◽  
Vol 40 (18) ◽  
pp. 3725-3733 ◽  
Author(s):  
Ting Sun ◽  
Hefeng Sun ◽  
Feng Zhao
Keyword(s):  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Reduced Graphene Oxide ◽  
Organochlorine Pesticides ◽  
Solid Phase ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Reduced Graphene

Dispersive solid-phase extraction of organophosphorus pesticides from apple, cucumber and water samples using reduced graphene oxide coated with ZnO nanocomposites as a sorbent

2015 ◽  
Vol 7 (15) ◽  
pp. 6095-6102 ◽  
Author(s):  
Ting Sun ◽  
Yongri Jin ◽  
Jie Yang ◽  
Lanjie Li ◽  
Xiaolei Shi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Reduced Graphene Oxide ◽  
Water Samples ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Phase Extraction ◽  
Dispersive Solid Phase Extraction ◽  
Reduced Graphene

RGO–ZnO nanocomposites were synthesized and used as DSPE adsorbent for enriching OPs in apple, cucumber and water samples.

scholarly journals Magnetic Solid-Phase Extraction Based on Magnetic Sulfonated Reduced Graphene Oxide for HPLC–MS/MS Analysis of Illegal Basic Dyes in Foods

Molecules ◽  
2021 ◽  
Vol 26 (24) ◽  
pp. 7427
Author(s):  
Shibo Cui ◽  
Xinwu Mao ◽  
Haijing Zhang ◽  
Haowei Zeng ◽  
Zihao Lin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid Phase Extraction ◽  
Reduced Graphene Oxide ◽  
Solid Phase ◽  
Magnetic Solid Phase Extraction ◽  
Phase Extraction ◽  
Reduced Graphene ◽  
Basic Dyes ◽  
Magnetic Solid

In this study, a magnetic solid-phase extraction (MSPE) method coupled with High-Performance Liquid Chromatography Mass Spectrometry (HPLC–MS/MS) for the determination of illegal basic dyes in food samples was developed and validated. This method was based on Magnetic sulfonated reduced graphene oxide (M-S-RGO), which was sensitive and selective to analytes with structure of multiaromatic rings and negatively charged ions. Several factors affecting MSPE efficiency such as pH and adsorption time were optimized. Under the optimum conditions, the calibration curves exhibited good linearity, ranging from 5 to 60 µg/g with correlation coefficients >0.9950. The limits of detection of 16 basic dyes were in the range of 0.01–0.2 µg/L. The recoveries ranged from 70% to 110% with RSD% < 10%. The results indicate that M-S-RGO is an efficient and selective adsorbent for the extraction and cleanup of basic dyes. Due to the MSPE procedures, matrix effect and interference were eliminated in the analysis of HPLC–MS/MS without the matrix-matched standards. Thus, validation data showed that the proposed MSPE–HPLC–MS/MS method was rapid, efficient, selective, and sensitive for the determination of illegal basic dyes in foods.

Sign in / Sign up

Export Citation Format

Share Document