yoctomole

See also: yocto-mole

English

From yocto- +‎ mole.

yoctomole (plural yoctomoles)

(metrology) An SI unit of amount of substance equal to 10⁻²⁴ moles. Symbol: ymol. The yoctomole is approximately 0.6 of an individual particle.
- 1991, Da Yong Chen et al., “Low-cost, high-sensitivity laser-induced fluorescence detection for DNA sequencing by capillary gel electrophoresis”, in Journal of Chromatography, volume 559, →DOI, page 237:
  A low cost, 0.75-mW helium neon laser, operating in the green region at 534.5 nm, is used to excite fluorescence from tetramethylrhodamine isothiocyanate-labelled DNA fragments that have been separated by capillary gel electrophoresis.The detection limit (3σ) for the dye is 500 ymol [1 yoctomole (1 ymol) = 10⁻²⁴ mol] or 300 analyte molecules in capillary zone electrophoresis

A single yoctomole cannot be realized; yoctomoles are still used for bulk measurements where individual counting cannot be performed. The yoctomole did make appearances in journals in the year the yocto- prefix was implemented, and often it is paired with the approximate amount of particles this value corresponds to.