The low natural abundance of 15N (0.36%) significantly reduces sensitivity, a problem which is only exacerbated by its low gyromagnetic ratio, (only 10.14% that of 1H).
Kelimpahan alami 15N yang rendah (0,36%) secara signifikan mengurangi sensitivitas, masalah yang hanya diperparah oleh rasio giromagnetik yang rendah, (hanya 10,14% dari 1H).