[Paper chromatographic separation of ions: magnesium, calcium, sodium and potassium].
D002118:Calcium / Q000737:chemistry*; D002845:Chromatography; D007477:Ions; D008274:Magnesium / Q000737:chemistry*; D011188:Potassium / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*
D007477:Ions; D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium
CALCIUM/chemistry; CHROMATOGRAPHY; MAGNESIUM/chemistry; POTASSIUM/chemistry; SODIUM/chemistry