Journal: MethodsX
Article Title: A simultaneous, high-throughput and sensitive method for analysing 13 neonicotinoids and metabolites in urine using a liquid chromatography–tandem mass spectrometry
doi: 10.1016/j.mex.2023.102129
Figure Lengend Snippet: Mass parameters and LC retention time
Article Snippet: A standard stock solution mixture of unlabelled NEOs and NEOms, as well as an internal standard (IS) solution including acetamiprid (pyridymethyl- 13 C 6 ) (ACE-IS), thiacloprid (pyridymethyl- 13 C 6 ) (TCP-IS), sulfoxaflor (2-methyl- 13 C, D 3 ; cyanamide- 15 N 2 , 13 C) (SUL-IS), flonicamid ( 18 O; amide- 15 N) (FLN-IS), thiamethoxam (methylene- 13 C; thiazole- 13 C 3 , 15 N) (THX-IS), dinotefuran (furylmethyl- 13 C 5 ) (DIN-IS), clothianidin (methylene- 13 C; thiazole- 13 C 3 , 15 N) (CLO-IS), imidacloprid (pyridymethyl- 13 C 6 ) (IMI-IS), nitenpyram (methyl- 13 C; ethyl- 13 C2;ethenediamine- 15 N 2 ) (NIT-IS), acetamiprid-N-desmethyl (acetimidamide- 13 C 3 ; amine- 15 N) (dm-ACE-IS), TCP-amid (pyridymethyl- 13 C 6 ) (TCP-amid-IS), CLO-desmethyl (guanidine- 13 C; guanidine-1,3- 15 N 2 ) (dm-CLO-IS) and IMD-olefin (imidazol-1- 15 N; 2- 13 C; 2-amino- 15 N) (IMI-OF-IS), were purchased from Cambridge Isotope Laboratories, Inc. (Tewksbury, MA, USA).
Techniques: