Fig. 8From: Analysis of composition and microstructure of diatom frustules in mud on the coast of Boryeong- city, South KoreaEnergy-dispersive X-ray spectroscopy (EDS) spectrum of the diatom frustule. EDS reveals that Si, Al, Fe, K, Na, Mg, and Ti elements are present on the diatom frustule. Inset: Scanning electron micrograph of the mud powder displaying the detection area of the EDS spot rangeBack to article page