Determination of flubendiamide in honey at trace levels by using solid phase extraction and liquid chromatography coupled to quadrupole time-of-flight mass spectrometry.

Pesticide residue has become a bottleneck for developing the Chinese herbal medicine industry. Diamide insecticides have been approved to control various crop pests in many countries around the world. In this study, a multi-residue method was established and validated for six diamides (flubendiamide, cyantraniliprole, cyclaniliprole, chlorantraniliprole, tetrachlorantraniliprole, and broflanilide) in honeysuckle matrix. In this methodology, the combined purifier based on the carboxylated multi-walled carbon nanotubes (MWCNT-COOH) exhibited good purification efficiency and effectiveness to the acetonitrile extract of honeysuckle. The instrumental analysis was completed perfectly in 16 minute on an ultra performance liquid chromatography-photodiode array detector (UPLC-PDA). The recoveries of six diamides ranged from 79 % to 107 %, with the relative standard deviations (RSD) less than 12.5 %. Limits of quantitation (LOQ) of six analytes ranged from 0.009 to 0.014 mg kg−1 in the honeysuckle sample. The results imply the method is reliable for detecting the six diamides in honeysuckle. 

Simultaneous Determination of Diamide Insecticides in Honeysuckle Using a Modified QuEChERS Based on Carboxylated Multi‐walled Carbon Nanotubes and UPLC‐PDA**

Cardamom is a major export oriented commodity in the world and it is susceptible to infestation by various pests which cause considerable economic loss. It is necessary to adopt new chemical insecticides with novel modes of action which control pest infestations. Flubendiamide fits into integrated pest management programmes in a variety of crops and is widely used in crops like tomato, cabbage and brinjal for controlling Lepidoptera pests and it is effective when used for cardamom. The major concern is ensuring residue free pods and safe harvest of cardamom for human consumption to prevent any health hazard. The present study investigates the behaviour of flubendiamide in cardamom in the humid subtropical conditions of India. A rapid, simple and selective method has been developed to determine residues of flubendiamide and desiodo flubendiamide in green cardamom, cured cardamom capsule, cured cardamom black seed and soil. The flubendiamide residues were extracted using the QuEChERS principle with acetonit...

Determination of flubendiamide residues and its safety evaluation for usage in cardamom by liquid chromatography

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Determination of flubendiamide residues and its safety evaluation for usage in cardamom by liquid chromatography