A practical method for rapid screening and quantitative analysis of 130 pesticide residues in herbal medicines based on the Kovats retention index principle: an exemplary study using Panacis quinquefolii radix

2019 ◽  
Vol 11 (38) ◽  
pp. 4868-4874
Author(s):  
Peng Tan ◽  
Xichuan Wei ◽  
Haizhu Zhang ◽  
Ming Niu ◽  
Dingkun Zhang
Keyword(s):  
Quantitative Analysis ◽  
Retention Index ◽  
Analytical Method ◽  
Pesticide Residues ◽  
Herbal Medicines ◽  
Practical Method ◽  
Rapid Screening ◽  
Kovats Retention Index ◽  
Kováts Retention Index

This study has provided a practical analytical method for rapid screening and quantitative analysis of 130 pesticide residues in herbal medicines based on the Kovats retention index.

scholarly journals Rapid Screening and Quantitative Analysis of 74 Pesticide Residues in Herb by Retention Index Combined with GC-QQQ-MS/MS

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Peng Tan ◽  
Li Xu ◽  
Xi-Chuan Wei ◽  
Hao-Zhou Huang ◽  
Ding-Kun Zhang ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Retention Index ◽  
Pesticide Residues ◽  
Analytical Approach ◽  
Research Work ◽  
The Other ◽  
Rapid Screening ◽  
Qualitative And Quantitative Analysis ◽  
Good Reliability ◽  
Qualitative And Quantitative

In this research, a very practical QuEChERS-GC-MS/MS analytical approach for 74 pesticide residues in herb based on retention index was established. This novel analytical approach has two important technical advantages. One advantage is to quickly screen pesticide compounds in herbs without having to use a large number of pesticide standard substances at the beginning of the experiment. The other advantage is to assist in identifying the target pesticide compound accurately. A total of 74 kinds of pesticides were quickly prescreened in all chuanxiong rhizoma samples. The results showed that three kinds of pesticides were screened out in all the samples, including chlorpyrifos, fipronil, and procymidone, and the three pesticides were qualitatively and quantitatively determined. The RSD values for interday and intraday variation were acquired to evaluate the precision of the analytical approach, and the overall interday and intraday variations are not more than 1.97% and 3.82%, respectively. The variations of concentrations of the analyzed three pesticide compounds in sample CX16 are 0.74%–4.15%, indicating that the three pesticides in the sample solutions were stable in 48 h. The spiked recoveries of the three pesticides are 95.22%, 93.03%, and 94.31%, and the RSDs are less than ± 6.0%. The methodological verification results indicated the good reliability and accuracy of the new analytical method. This research work is a new application of retention index, and it will be a valuable tool to assist quickly and accurately in the qualitative and quantitative analysis of multipesticide residues in herbs.

scholarly journals Kovats retention index-boiling point relationship of 2-phenyl-2-alkyl-acetonitriles on stationary phases of different polarity

2005 ◽  
Vol 11 (2) ◽  
pp. 55-58 ◽  
Author(s):  
Dusan Mijin ◽  
Dusan Antonovic
Keyword(s):  
Stationary Phase ◽  
Retention Index ◽  
Boiling Point ◽  
Chemical Potential ◽  
Stationary Phases ◽  
Kovats Retention Index ◽  
Standard Chemical Potential ◽  
Relationship Of ◽  
Kováts Retention Index ◽  
Methylene Group

Linear and reciprocial Kovats retention index-boiling point relationships known from the literature were used to study the Kovats retention index-boiling point dependence of 2-phenyl-2-alkylacetonitriles on stationary phases of different polarity (OV-17, OV-210 and OV-225). The standard chemical potential of the partitioning of one methylene group of an n-alkane for the stationary phase was calculated and compared with available literature data.

scholarly journals Automated procedure for candidate compound selection in GC-MS metabolomics based on prediction of Kovats retention index

2009 ◽  
Vol 25 (6) ◽  
pp. 787-794 ◽  
Author(s):  
V. V. Mihaleva ◽  
H. A. Verhoeven ◽  
R. C. H. de Vos ◽  
R. D. Hall ◽  
R. C. H. J. van Ham
Keyword(s):  
Retention Index ◽  
Kovats Retention Index ◽  
Compound Selection ◽  
Kováts Retention Index

Temperature dependence of the Kováts retention index

2008 ◽  
Vol 1206 (2) ◽  
pp. 178-185 ◽  
Author(s):  
Miklós Görgényi ◽  
Zoltán A. Fekete ◽  
Herman Van Langenhove ◽  
Jo Dewulf
Keyword(s):  
Temperature Dependence ◽  
Retention Index ◽  
Kovats Retention Index ◽  
Kováts Retention Index

Accuracy in the determination of the Kováts retention index

1976 ◽  
Vol 118 (1) ◽  
pp. 13-22 ◽  
Author(s):  
X. Guardino ◽  
J. Albaigés ◽  
G. Firpo ◽  
R. Rodríguez-Vinãls ◽  
M. Gassiot
Keyword(s):  
Retention Index ◽  
Kovats Retention Index ◽  
Kováts Retention Index
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