✦ LIBER ✦

The wall effect of potential for determining the iep of quartz sand

✍ Scribed by M. Tschapek; C. Wasowski

Publisher: Elsevier Science
Year: 1986
Tongue: English
Weight: 251 KB
Volume: 31
Category: Article
ISSN: 0013-4686
DOI: 10.1016/0013-4686(86)87036-0

No coin nor oath required. For personal study only.

✦ Synopsis

The wall effect potential is measured with reversible electrodes connected through salt bridges to two contacting sand samples having different water (electrolyte solution) contents. The wall effect is one of the phenomena known as the Pallmann-Wiegner phenomena. bearing direct relation with the electrical double layer of the solid charged surface. At the isoelectric point (k-p), when the densities of surface charges of quartz sand are equal (SiO-= SiOH:), the wall effect potential disappears. The iep of quartz sand lies at pH = 2.9.

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