Method validation, storage stability and field trial for residues of florasulam and pyroxsulam in cereal by liquid chromatography with tandem mass spectrometry

Bi, Yingying; Han, Lijun; Song, Shuangyu; Yao, Wei; Qin, Fayi; Xu, Yujuan; Wu, Qiong

doi:10.1080/19440049.2020.1723809

Cited by 9 publications

(1 citation statement)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, this method is only suitable for the pretreatment of fruits and vegetables with high water content [17]. Samples with low water content such as wheat grains and rapeseeds require the addition of a certain proportion of ultrapure water in the extraction process [18,22]. Also, since phthalanilic acid contains a carboxyl group, 0.1% formic acid is added to the extraction solvent to enhance extraction efficiency for better recovery [23].…”

Section: Optimization Of Extraction and Purification Conditionsmentioning

confidence: 99%

Rapid Residue Analysis of Phthalanilic Acid in Cereals and Oilseed Rape by High-Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry

Zhang

Zhou²,

Yu³

et al. 2022

Journal of Chemistry

View full text Add to dashboard Cite

Phthalanilic acid is widely used in wheat and oilseed rape fields in China, but there is no analysis method to detect its residues in wheat and oilseed rape substrates. To accurately evaluate the health and environmental impact of phthalanilic acid residues on wheat gains and rapeseeds, it is urgent to establish a reliable analytical method for its detection. In this study, a rapid and sensitive method was developed based on QuEChERS and LC-MS/MS to detect phthalanilic acid in cereals (wheat, rice, corn, and millet), wheat straw, and rapeseeds. Optimization of the detection conditions showed that the mobile phase of acetonitrile-0.1% formic acid solution had the best chromatographic resolution and sensitivity. The average recovery rates of phthalanilic acid in cereals, wheat straw, and rapeseeds ranged from 88% to 113% with relative standard deviations (RSDs) of 1%–6%. There were good linear relationships with the correlation coefficients (r) higher than 0.9990 at concentrations of 0.01–5 mg L−1. The limits of quantification (LOQ) for phthalanilic acid in cereals, wheat straw, and rapeseeds were 0.01 mg kg−1, 0.05 mg kg−1, and 0.02 mg kg−1, respectively. These results show that the method established in this study is convenient and reliable for routine monitoring of phthalanilic acid in cereals, wheat straw, and rapeseeds.

show abstract