Analytical chemistry is the science of obtaining, processing, and communicating information about the composition and structure of matter. In other words, it is the art and science of determining what matter is and how much of it exists. Analytical chemists use their knowledge of chemistry, instrumentation, computers, and statistics to solve problems in almost all areas of chemistry and for all kinds of industries. For example, their measurements are used to assure the safety and quality of food, pharmaceuticals, and water; to assure compliance with environmental and other regulations; to support the legal process; to help physicians diagnose diseases; and to provide measurements and documentation essential to trade and commerce. Analytical chemists often work in service-related jobs and are employed in industry, academia, and government. They conduct basic laboratory research; perform process and product development; design instruments used in analytical analysis; teach; and work in marketing and law. Analytical chemistry can be a challenging profession that makes significant contributions to many fields of science (https://www.acs.org) Read more »
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Chemistry Ebook: Modern Analytical Chemistry By David Harvey First Edition
Penentuan Panjang Gelombang Maksimum Senyawa Kalium Permanganat Untuk Pengembangan Metode Uji Performa Alat Spektronic 20D+ Yang Digunakan Dalam Penelitian dan Praktikum Di Laboratorium
Kegiatan Pengembangan Laboratorium
Pada kegiatan penelitian dan praktikum tentunya akan menggunakan alat dan bahan kimiayang dapat menunjang proses kegiatannya. Salah satu alat yang digunakan untuk analisis kuantitatif oleh mahasiswa dan terdapat di laboratorium anorganik adalah alat spektronic 20D+ dengan merk Thermo Scientific. Prinsip dari alat Spectronic 20D+ sama seperti spektrofotometer yang lainnya yaitu didasarkan pada interaksi antara molekul senyawa dengan radiasi sinar tampak atau ultraviolet, akan tetapi alat ini merupakan generasi terdahulu sebelum munculnya alat-alat spektrofotometer yang lebih modern dengan sistem double beam dan dapat terkoneksi dengan computer. Pemanfaatan secara optimal dari fasilitas alat yang ada di laboratorium harus selalu dilakukan untuk memenuhi komitmen mutu dalam penyelenggaraan pendidikan di perguruan tinggi. Read more »
Chemistry Ebook: Recommended Methods of Manure Analysis
Chemistry Ebook: Mass Spectrometry Instrumentation, Interpretation, and Applications
The first part of this book is dedicated to a discussion of mass spectrometry (MS) instrumentation. We start with a list of basic definitions and explanations (Chapter 1). Chapter 2 is devoted to the mass spectrometer and its building blocks. In this chapter we describe in relative detail the most common ion sources, mass analyzers, and detectors. Some of the techniques are not extensively used today, but they are often cited in the MS literature, and are important contributions to the history of MS instrumentation. In Chapter 3 we describe both different fragmentation methods and several typical tandem MS analyzer configurations. Chapter 4 is somewhat of an outsider. Separation methods is certainly too vast a topic to do full justice in less than twenty pages. However, some separation methods are used in such close alliance with MS that the two techniques are always referred to as one combined analytical tool, for example, GC-MS and LC-MS. In effect, it is almost impossible to study the MS literature without coming across at least one separation method. Our main goal with Chapter 4 is, therefore, to facilitate an introduction to the MS literature for the reader by providing a short summary of the basic principles of some of the most common separation methods that have been used in conjunction with mass spectrometry.
