DETERMINATION OF TRACE MERCURY (Hg(II)) BY ANODIC STRIPPING VOLTAMMETRY at A GOLD FILM ON ZEOLITE MODIFIED CARBON PASTE ELECTRODE

• Main Author: PEBRIANTI (NIM: 20508014), TINA
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/13142
• Institution: Institut Teknologi Bandung

Mercury is a highly toxic metal and one of the sources of pollutant for our environment. The existences of mercury can come from human activities, such as industrial waste. Mercury in the form of metyl mercury can be easly enter human body through respiratory system or food. The accumulation of mercury on human body can cause so many dangerous impact such as cancer, reproduction gland disfunction, brain damage, osteophorosis, and nervous system poissoning. In spite of that, mercury can also be usefull for some aplications. For example, the use of amalgam in denstistry or the use of mercury as depigmentation compound in cosmetics, especially whitening cosmetics. The over concentration sometimes give a dangerous side effect. Therefore, the simple and effective analytical methods for determination of mercury are needed. Many experiments on mercury analysis have been reported, such as cold vapour atomic absorption CV-AAS, inductively coupled plasma mass spectrometry ICP-MS and several chromatographic techniques modificated with spectrometric methods. But yet, those methods have a complicated pretreatment and a highly cost. The other methods quite effective for analysis of mercury is voltammetry. This method can be used for determination of very low concentration of mercury with a detection limit at part per billion level. The most common technique is anodic stripping voltammetry (ASV). Different type of electrode have been used for this analysis and found out that deposition of Hg onto electrode occurs only when another metal which can co-deposit with Hg such as Cu or Au is present in the solution. <br />