||Atomic Absorption Spectrometry - Current Status and New Analytical Perspectives
||1 - Atomic Spectrometry-Spectroscopy
2 - Quality/Regulatory/Compliance
3 - Environmental Analysis
4 - Flow Injection Analysis
5 - Inductively Coupled Plasma
||03/05/2017 - Sunday
||1 Day Course
||$575 ($775 after 2/18/17)
|Recent instrumental developments in atomic absorption spectrometry (AAS) has revived considerable interest due to competitive limits of detection, simplicity, low purchase and operating costs and the potential for determining the concentrations of about 70 analytes in complex aqueous and organic solutions and directly in solid samples.
This one-day short course will provide a new insight to the application of AAS as a spectroanalytical technique for quantitative determination of chemical elements using absorption of optical radiation by free atoms in the gaseous state.
After describing underlying fundamental principles, the course will describe the functions of line and spectral continuum sources, atomizers, detectors, emphasizing the importance of echelle monochromators and high resolution.
It will be demonstrated that AAS systems are versatile including robust flames, burners and graphite furnaces with matrix modification to overcome both sample and analyte -derived interferences. Time will be delegated to describe physical, spectroscopic and ionization interferences and their compensation and typical applications in environmental, agricultural, pharmaceutical, industrial and geoanalysis.
The course will conclude with a critical examination of disadvantages vs. advantages of AAS in terms of sample throughput, convenience, simplicity and analytical performance, making comparisons with microwave induced and inductively coupled plasma atomic emission spectrometry.
|This course is intended for laboratory managers, quality control and assurance specialists, research scientists, environmental chemists, geochemists, biologists, metallurgists, toxicologists, new and experienced users of atomic absorption and plasma spectrometry, and technical personnel at all levels.
• Types of atomic spectroscopy
• Historical aspects of AAS
• Fundamentals: Excitation, absorption
• Analytical figures of merit - LODs, linear ranges
• Spectrometers for line source (LS) - Czerny Turner, and continuum source
• High Resolution Echelle-CCD spectrometers
• The big players - PE (PINNAAcle, 200), Agilent, Jena Analytik (High Resolution ContraAA Continuum (CS) Xe source)
• Radiation sources - hollow cathode vs. Xe lamp
• Nebulization and nebulizers
• Hydride generation - As and Se determinations
• Cold Vapor (CVAA) for Hg
• Flow injection
• Detectors - PMTs, CCDs
• Flames - Mixtures and temperatures, flame structure, observation heights, burner heads
• Electrothermal vaporization - graphite atomizers (THGA), Lvov Platform and STPF, stages in vaporization, slurry injection
• Comparison of ETV vs. Flames
• Interferences and compensation - Spectral, physical, chemical, ionization
Background correction - Deuterium lamp
• Zeeman, Smith-Hieftje, Continuum Source
• Analytical setup - wavelength selection, flame composition, viewing height, calibration, addition method
• Applications - emphasis on environmental samples
• Compliant procedures - USEPA 7000B
• QA/QC and ISO 17025
• Comparison of flame AAs with microwave plasma and ICP-AES
• Summary and conclusions
Course Instructor's Biography
|Dr. Isaac (Joe) Brenner currently serves as a consulting scientist in geo-environmental analytical science and technologies. He is actively involved in instrumental and methods development for solution and solids analysis using ICP-AES and ICP-MS. He specializes in preparing environmental laboratories for ISO/EC 17025 accreditation using Standard Methods and US EPA procedures, including sampling strategies and preparation, preparation of SOPs, instruction, and QA/QC
He obtained his Ph.D. in Geochemistry from the Hebrew University, Jerusalem, Israel in 1980. Dr. Brenner was a guest scientist in several academic institutions (Technical University Graz, Austria, Earth Dynamics Science Center, National Cheng Kung University in Taiwan) and in the past in the Laboratoire de Chimie Analytique Bio Inorganique et Environnement, (LCABIE) CNRS, Pau, France, Chuo University, Tokyo, Japan, Faculty of Chemistry, Autonoma University, Barcelona, Spain).
He was head of the application labs in Jobin Yvon in Longjumeau, France, an environmental application specialist in the Varian Research Center, Palo Alto, California, USA and a consulting scientist in Thermo Fisher Scientific in Madrid, Spain and in the UK.
In these positions, he specialized methodologies for axial and radial ICP-AES and ICP-MS. Brenner is an adviser for compliant analysis of waters and wastes at the Dan City Authority (EGODAN) in Israel..