Residue determination of plant activator benzo-1,2,3-thiadiazole-7- carboxylic acid 2-benzoyloxyethyl ester in water, soil, and vegetable by gas chromatography with tandem mass spectrometry

Abstract

This study aimed to develop a rapid, specific and sensitive method for the residue determination of benzo-1,2,3-thiadiazole-7-carboxylic acid 2-benzoyloxyethyl ester in soil, vegetable, and water by using gas chromatography with tandem mass spectrometry. During the extraction procedure, modified quick, easy, cheap, effective, rugged, and safe method using acetonitrile was compared with classical oscillating extraction using ethyl acetate and acetone, respectively. Before injection, a solid-phase extraction cartridge of Bond Elut Florisil was used for sample clean-up. The method was fully validated and showed satisfactory linearity (r(2) > 0.99) over the range to be assayed (10-1000 ng/mL), with the limits of detection ranging from 0.092-0.229 ng/mL and the limits of quantification ranging from 0.307-0.763 ng/mL. Recovery values at the spiked concentrations of 10, 100 and 1000 ng/g varied from 85.9-109.3%, 81.0-108.2%, 74.2-113.4% for water, soil and vegetable, respectively, with the maximum relative standard deviations of 12.2%. Results indicated that the established modified quick, easy, cheap, effective, rugged, and safe method coupled to gas chromatography with tandem mass spectrometry was promising for the residue monitoring of benzo-1,2,3-thiadiazole-7-carboxylic acid 2-benzoyloxyethyl ester in the environment and vegetable products.

Simultaneous Analysis of Ursolic Acid and Oleanolic Acid in Guava Leaves Using QuEChERS-Based Extraction Followed by High-Performance Liquid Chromatography

“…The eluent was collected and then evaporated until near dryness with gentle nitrogen stream at 40°C [16]. Finally, the residue was dissolved in 2 mL methanol, filtered through a 0.2  μ m nylon syringe filter (JinTeng, China), and 5  μ L of filtrate was injected into the HPLC.…”

Determination of Plant Growth Regulators in Chinese Herbal Medicine: A Comparison of Liquid (QuEChERS) and Solid (MSPD) Extraction Methods

“…Bingjun Han, * ,a Bing Qian, a,b,c Yan He a and Lixu Peng a,b solutions has been developed for many types of chemicals, including pesticides, 19,20 polycyclic aromatic hydrocarbons 21 in fruits, 22 honey products, 23 water and soil. 24 Additionally, the method has been applied to successfully identify PGRs with the advantages of rapidity, simplicity, and a reduced number of steps. [24][25][26] However, the QuEChERS method requires a rather large sample (about 10 g) making it unsuitable for rare herbal medicines, such as Ganoderma lucidum and Cordyceps militaries.…”

“…24 Additionally, the method has been applied to successfully identify PGRs with the advantages of rapidity, simplicity, and a reduced number of steps. [24][25][26] However, the QuEChERS method requires a rather large sample (about 10 g) making it unsuitable for rare herbal medicines, such as Ganoderma lucidum and Cordyceps militaries. Consequently, a solid extraction method, matrix solid-phase dispersion (MSPD), 27 has been developed to disperse small amount of samples using a selective solid-phase for the extraction of analytes from solid, semisolid, and viscous matrices, including food, 28 plant, 29 biological 30 and environmental 31 samples.…”