Lee, Kum-Tatt published the artcileDetermination of serum iron and zinc by atomic absorption spectroscopy, Safety of 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine, the publication is Mikrochimica Acta (1974), 65-72, database is CAplus and MEDLINE.
An improved, rapid, and precise method was developed for the simultaneous determination of Fe and Zn in serum by at. absorption spectroscopy. The new procedure avoided the clogging of the burner head and possible contamination from Hb Fe, which could occur in other at. absorption methods; it also yielded accurate data when the Fe concentration was <200 μg/100 ml serum, as well as in the higher ranges. The method dependend upon the efficient complexing of serum Fe and Zn with pyridine-2-aldehyde 2-pyridylhydrazone. Although these metal chelates were practically insoluble in aqueous media, by shifting the pH to the alk. side with KOH, they could be extracted quant. into an organic solvent, such as amyl alc. This organic extract could then be aspirated into the air-C2H2 flame of the spectrometer. Even in the lower ranges, the procedure yielded good reproducibility. The method can also be applied to urine samples.
Mikrochimica Acta published new progress about 2215-33-0. 2215-33-0 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine, and the molecular formula is C11H10N4, Safety of 2-((2-(Pyridin-2-yl)hydrazono)methyl)pyridine.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem