Determination of nitenpyram dissipation and residue in kiwifruit by LC-MS/MS

ABSTRACT

To investigate the presence of nitenpyram in kiwifruit, a field experiment was conducted in six kiwifruit producing regions in China. A modified quick, easy, cheap, effective, rugged and safe method (QuEChERS) method based on liquid chromatography-tandem mass spectrometry (LC-MS/MS) was developed for the determination of nitenpyram in kiwifruit. Quantitative detection was performed by LC-MS/MS in multiple reaction monitoring (MRM) mode under positive-ion electrospray ionisation. The proposed method is linear and accurate in the range of 0.005 to 4.5 μg/mL. The recovery of nitenpyram was satisfactory (71.96–96.67%) with reasonable RSDs (9.83 %) for 0.01–4.5 mg/kg spiked levels. The limit of quantification (LOQ) was 0.01 mg/kg for nitenpyram. Nitenpyram degraded rapidly in kiwifruit with a half-life <4 days. Residues of nitenpyram were <0.01 − 0.54 mg/kg in kiwifruit 7, 14 and 21 days after spraying at six sites.

Graphical Abstract

KEYWORDS:

• Nitenpyram
• kiwifruit
• LC-MS/MS
• residues

Acknowledgments

The authors wish to thank the Major State Research Development Program of China (No. 2016YFD0200206-3), the National Natural Science Foundation of China (No. 21667007) and the Science and Technology Programs of Guizhou Province (No. [2017]5788) for financial support.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by The Major State Research Development Program of China [No. 2016YFD0200206-3];The Science and Technology Programs of Guizhou Province [No. [2017]5788];The National Natural Science Foundation of China [No. 21667007].