Surjani Wonorahardjo

State University of Malang Indonesia

Surjani Wonorahardjo is currently a lecturer in State University of Malang (Universitas Negeri Malang, Indonesia), teaches Analytical Chemistry Courses in Undergraduate as well as Postgraduate Chemistry Departments. She completed her Ph.D. degree in Chemistry in 1999 from The University of New South Wales, Australia, prior to another research journey in analytical chemistry, as a Humboldt fellow at Sektion Kernresonanspektroskopie, Universitaet Ulm, Germany until 2002. Her wide interest about nature, ranging from chemistry to science point of view, makes her work in more area of applications possible, such as in food analytics and agriculture, biomaterials, environment as well as chemistry educations and science philosophy. The keyword 'innovation” from related concepts in education to applicable materials finds its meaning in the work of chemistry, and for serving humanity too.

1chapters authored

Chapters authored

Modern Analytical Chemistry Methods for Chalcogen Materials Analysis and Characterization

By Surjani Wonorahardjo, Fariati Fariati and I Wayan Dasna

Analytical methods are needed to elucidate modern and complex compounds as well as to describe their physical properties. The underlying principles of chalcogen chemistry as well as the natural abundance of chalcogen elements are the base of building many biological substances, including sophisticated materials for future applications. Thus, the need for modern and state-of-the art analytical methods and techniques to characterize them, is obvious. In this chapter, challenges in analytical methods for chalcogen compounds and materials, as well as some examples of natural or synthesized materials or their combinations, including biomaterials, are discussed. Modern methods for chalcogen compounds analysis and structural determination discussed include: UV-Visible and infrared spectroscopy (UV-Vis and IR), thermo analysis, electrochemistry, magnetic analysis, chromatography, X-ray methods (mostly XRF, XRD, and EDX), high-resolution microscopy (SEM and TEM), multinuclear NMR, computational analysis, and bioassay. Also, the historical background and nature of chalcogen elements, including reactivity and magnetic properties as well as thermal behavior, common compounds of chalcogen elements: organic and inorganic materials, complex chalcogen materials, will be briefly discussed.

Part of the book: Chalcogen Chemistry

Surjani Wonorahardjo

Chapters authored

Related collaborators

Thies Thiemann

Dan Xu

Soufiane Zerraf

Said Belaaouad

Kheireddine Aziz

Mustafa Belhabra

Mohamed Loukil

I Wayan Dasna

Fariati Fariati

Winston Wu