1
|
Li L, Jin Y, Jin Y, Zhang Z, Zhu Z, Kou H. A New Benzyl Phenethanolamine-β-Cyclodextrin Bonded Phase: Chiral Chromatography Performance and Application for LC-MS/MS Analysis of Pesticide Enantiomers in Fruits and Vegetables. J AOAC Int 2022; 105:1319-1329. [DOI: 10.1093/jaoacint/qsac047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Revised: 04/03/2022] [Accepted: 04/11/2022] [Indexed: 11/12/2022]
Abstract
Abstract
Background
At present, the research on achiral drug and pesticide residue detection methods is still the mainstay at home and abroad, and there is still a lack of systematic research on the enantiomeric analysis of chiral drugs and pesticides.
Objective
In order to prepare a novel chiral stationary phase, whose “multi-mode” chiral separation chromatographic performance and its utility was verified.
Method
An S-(-)-2-benzylamino-1-phenylethanol mono-derivative β-cyclodextrin bonded stationary phase (BzCSP) was prepared based on the “thiol-ene” addition reaction. The chiral compounds including four types of chiral compounds were used as “probes,” and their chiral chromatographic properties were evaluated. Furthermore, a new LC-MS/MS method for the determination of the enantiomeric residues of three chiral pesticides in five kinds of fruits and vegetables was established.
Results
The study found that the novel stationary phase was suitable for a variety of chromatographic modes (normal phase mode, reversed-phase mode, polar organic mode). The resolutions of hexaconazole (Hex), tebuconazole (Teb), and triticonazole (Trit) enantiomers could be up to 2.31, 1.68, and 1.48, respectively, within 30 min under reversed-phase chromatography. Based on the optimal chromatographic and mass spectrum conditions, a new LC-MS/MS quantitative method for the Hex, Teb, and Trit enantiomers was established by multi-reaction positive ion monitoring (MRM). The detection limits (LODs) of enantiomers were less than 0.89 µg/kg for Hex, 0.93 µg/kg for Teb, and 0.93 µg/kg for Trit, and the averaged recoveries of enantiomers were in the range of 75.8–106.3% for Hex, 77.4–116.3% for Teb, and 78.7–113.4% for Trit. The method had good reproducibility with the RSDs (<5%) for intraday and (<7%) for interday.
Conclusions
The established method had the characteristics of good selectivity, high sensitivity, strong resistance to matrix interference, and good reproducibility. It is indicated that the stationary phase prepared by the “thiol-ene” addition reaction is a new type of multi-mode stationary phase, which has a good development value.
Highlights
The study reported a new method for the rapid preparation of a rare “multi-mode” chiral stationary phase BzCSP based on the “thiol-ene” addition reaction and verified the practicability of BzCSP including good selectivity, high sensitivity, strong resistance to matrix interference, and good reproducibility.
Collapse
Affiliation(s)
- Liang Li
- School of Ecology and Environment, Yuzhang Normal University , No. 1999, Meiling Ave., Honggutan Dist. , Nanchang, Jiangxi 330103, China
| | - Yongjiu Jin
- Physical and Chemical Hygiene Inspection, Nanchang Center for Disease Control and Prevention , No. 833, Lijing Rd., Honggutan Dist. , Nanchang, Jiangxi 330038, China
| | - Yanhong Jin
- Physical and Chemical Hygiene Inspection, Nanchang Center for Disease Control and Prevention , No. 833, Lijing Rd., Honggutan Dist. , Nanchang, Jiangxi 330038, China
| | - Zhi Zhang
- School of Ecology and Environment, Yuzhang Normal University , No. 1999, Meiling Ave., Honggutan Dist. , Nanchang, Jiangxi 330103, China
| | - Zhou Zhu
- School of Ecology and Environment, Yuzhang Normal University , No. 1999, Meiling Ave., Honggutan Dist. , Nanchang, Jiangxi 330103, China
| | - Haiqun Kou
- School of Ecology and Environment, Yuzhang Normal University , No. 1999, Meiling Ave., Honggutan Dist. , Nanchang, Jiangxi 330103, China
| |
Collapse
|
2
|
Park JM, Park JH. Enantiomer separations of basic chiral compounds by capillary electrochromatography on a phosphated β-cyclodextrin-modified zirconia monolith. J Chromatogr A 2014; 1339:229-33. [DOI: 10.1016/j.chroma.2014.03.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/28/2014] [Accepted: 03/01/2014] [Indexed: 11/24/2022]
|
7
|
Kumar AP, Park JH. Chiral separation of basic compounds on a cellulose 3,5-dimethylphenylcarbamate-coated zirconia monolithin basic eluents by capillary electrochromatography. J Chromatogr A 2011; 1218:6548-53. [DOI: 10.1016/j.chroma.2011.06.101] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2011] [Revised: 06/24/2011] [Accepted: 06/26/2011] [Indexed: 10/18/2022]
|
8
|
Cheng C, Wu SC. Simultaneous analysis of aspartame and its hydrolysis products of Coca-Cola Zero by on-line postcolumn derivation fluorescence detection and ultraviolet detection coupled two-dimensional high-performance liquid chromatography. J Chromatogr A 2011; 1218:2976-83. [PMID: 21481403 DOI: 10.1016/j.chroma.2011.03.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2010] [Revised: 02/01/2011] [Accepted: 03/15/2011] [Indexed: 10/18/2022]
Abstract
An innovative two-dimensional high-performance liquid chromatography system was developed for the simultaneous analysis of aspartame and its hydrolysis products of Coca-Cola Zero. A C8 reversed-phase chromatographic column with ultraviolet detection was used as the first dimension for the determination of aspartame, and a ligand-exchange chromatographic column with on-line postcolumn derivation fluorescence detection was employed as the second dimension for the analysis of amino acid enantiomers. The fluorimetric derivative reagent of amino acid enantiomers was o-phthaldialdehyde. The hydrolysis of aspartame in Coca-Cola Zero was induced by electric-heating or microwave heating. Aspartame was quantified by the matrix matched external standard calibration curve with a linear concentration range of 0-50 μg mL(-1) (r(2)=0.9984). The limit of detection (LOD) and the limit of quantification (LOQ) were 1.3 μg mL(-1) and 4.3 μg mL(-1), respectively. The amino acid enantiomers was analyzed by the matrix matched internal standard calibration method (D-leucine as the internal standard) with a linear concentration range of 0-10 μg mL(-1) (r(2)=0.9988-0.9997). The LODs and LOQs for L- and D-aspartic acid and L- and D-phenylalanine were 0.16-0.17 μg mL(-1) and 0.52-0.55 μg mL(-1), respectively, that was 12-13 times more sensitive than ultraviolet detection. The overall analysis accuracy for aspartame and amino acid enantiomers was 90.2-99.2% and 90.4-96.2%, respectively. The overall analysis precision for aspartame and amino acid enantiomers was 0.1-1.7% and 0.5-6.7%, respectively. Generally, the extent of aspartame hydrolysis increases with the increase of electro-thermal temperature, microwave power, and the duration of hydrolysis time. D-aspartic acid and D-phenylalanine can be observed with the electro-thermal racemization at the hydrolysis temperature 120°C for 1 day and only D-aspartic acid can be observed at the hydrolysis temperature 90°C for 2 and 3 days. For the microwave induced hydrolysis, only L-aspartic acid was detected at the power 560 W for 1 min and 320 W for 3 min.
Collapse
Affiliation(s)
- Cheanyeh Cheng
- Department of Chemistry, Chung Yuan Christian University, Chungli, Taiwan, ROC.
| | | |
Collapse
|
10
|
Zhao J, Lin DQ, Wang YC, Yao SJ. A novel β-cyclodextrin polymer/tungsten carbide composite matrix for expanded bed adsorption: Preparation and characterization of physical properties. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.01.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|