Bazı Türk Diatomik Topraklar ile Ticari Diatomik Toprakların Yeryüzü Benzerliklerinin Taramalı Elektron Mikroskobu (SEM) Kullanılarak Ön Kontrolü

Year 2017, JOTAF / JOURNAL OF TEKIRDAG AGRICULTURAL FACULTY, 13 - 19, 19.09.2017

Özgür Sağlam

Abstract

Diyatomlar tek hücreli yosunların ölmüş yapısıdır  ve sudaki ekosistemlerde fosilleşmiş diatomlardan oluşur.

Keywords

Diatom, , SEM

Preliminary Checking of Some Turkish Diatomaceous Earth Similarities with Commercial Diatomaceous Earths under Scanning Electron Microscope (SEM)

Abstract

Diatoms are dead bodies of unicellular algae’s and made up of fossilized diatoms in aquatic ecosystems.

Diatomaceous earth (DE) is a dust varying in color depending on composition, from white-grey to yellow to red and

active ingredient is amorphous silicon dioxide. DEs are commonly used for purification of water, the purification of

juices, separation of various oils and chemicals and also used as an insecticide. Mode of action as insecticide which

damage occurs to the insects protective wax coat on the cuticle, mostly by sorption and to a lesser degree by abrasion,

or both. The result is the loss of water from the insect's body through desiccation resulting in death. The efficacy of

DE against insects depends on different physical and morphological characteristics of the diatoms. In present study,

image properties of 10 different Turkish DE samples under Scanning Electron Microscope (SEM) were checked and

compared similarities with commercial DEs, namely Protector, SilicoSec, Insecto and Pyrisec. SEM image analysis

indicated that there were variations in shape and size of dead bodies of diatoms in Turkish and commercial DEs. The

shapes of dead bodies of diatoms in Turkish local DE’s named as CBN and BGN were found very similar with those in

commercial DE, Silicosec. Local DE coded as DC has a round shape and looks similar to commercial DE of Pyrisec while

local DE coded as CAN has triangle shape and its shape was different from those of all other DE samples.

Keywords

Turkish Diatomaceous earth, SEM, Diatom, composition

References

• Anonymous, 2017a. Diatomite Mining and Processing,http://diatomite.org/Diatomite-Mining-and-Processing.IDPA, International diatomite producers association. (Accessed date: 05.05.2017).