Dispersive Micro-solid-Phase Extraction of Acaricides from Fruit Juice and Functional Food Using Cucurbituril as Sorbent

Development of a gold nanoparticle-based lateral flow immunoassay for the fast detection of diafenthiuron in cabbage and apples

“…At present, a variety of analytical techniques, such as ultra-high-performance liquid chromatography (UPLC), 18 high performance liquid chromatography (HPLC), 19,20 colorimetry 21 and nanozyme sensors, 22 have all been used for the detection of DIAF in food and environmental samples. Pesticide residues in food can be accurately detected by chromatograph-based methods, but they must be carried out in a laboratory environment and the procedure is tedious, presenting certain limitations.…”

Transition‐metal‐free Cyclization of Mucohalic Acids with Sulfonyl Hydrazides: An Approach to Pyridazin‐3(2H)‐ones

“…[13][14][15] Additionally, vast numbers of pesticides are also pyridazin-3(2H)-one derivatives, e. g., Diclomezine, Flufenpyr and Pyridaben (Figure 1b). [16][17][18][19] Due to the existence of the multiple reaction sites, sulfonyl hydrazides have been widely used as synthons or reagents in the preparation of pharmaceutical active compounds and organic methodology. [20][21][22][23] Recently, there are many reports on the sulfonation [24][25][26] and cyclization [27][28][29] of sulfonyl hydrazides that can construct CÀ S and CÀ N bonds to obtain multifunctional compounds, gradually becoming a hotspot in organic synthesis field.…”

“…Additionally, vast numbers of pesticides are also pyridazin‐3(2 H )‐one derivatives, e. g., Diclomezine, Flufenpyr and Pyridaben (Figure 1b). [16–19] …”

Measuring the Residual Levels of Fenpyroximate and Its Z-Isomer in Citrus Using Ultra-High-Performance Liquid Chromatography–Tandem Mass Spectrometry and Assessing the Related Dietary Intake Risks

“…Fenpyroximate has an oxime-bearing pyrazole structure, and is now widely used as an acaricide. It is characterized by its strong contact action upon harmful mites such as red spiders and whole-claw spiders, and it exhibits a high degree of fast-acting acaricidal activity [10]. The action mechanism of fenpyroximate is different from that of general insecticides; it mainly interferes with neurophysiological activities, and is inhibitory on nerve conduction; as a result, mites and insects experience the symptoms of paralysis, inactivity, cessation of food intake, and, ultimately, death, 2-4 days after coming into contact with fenpyroximate [11].…”

“…In summary, we sought in this work to evaluate the potential health risk posed to Chinese residents by fenpyroximate ingested from citrus, and also provide a proposal for the safe and rational use of this pesticide in citrus fruit cultivation. In previous studies, the methods of QuEChERS and micro-solid-phase extraction (DMSPE), as well as high-performance liquid chromatography (HPLC) and ultra-highperformance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS), have all been used to analyze the fenpyroximate in fruit juice, apple, tea, ginger, cucumber, green cabbage, orange, guava, eggplant, herbal medicines, and kiwi fruit [9,10,[13][14][15]. However, these studies only detected residual levels of the primitive body of fenpyroximate.…”