LIMITS OF DETECTION OF AN TOTAL REFLECTION SYSTEM WITH DOUBLE REFLECTION MODULE V. F. Nascimento Filho 1,2, V. H. Poblete 3 P., P. S. Parreira 1,4, E.

Slides:

Advertisements

Similar presentations

Chapter 7 Chemical Reactions.

Advertisements

VIRGÍLIO F. NASCIMENTO FILHO Departamento de Ciências Exatas/ESALQ

LIMITS OF DETECTION OF AN TOTAL REFLECTION SYSTEM WITH DOUBLE REFLECTION MODULE V. F. Nascimento Filho 1,2, V. H. Poblete 3 P., P. S. Parreira 1,4, E.

Solution Concentration Read 281 – 283. Try questions 1 – 8 (show work) Concentration = quantity of solute quantity of solution (not solvent) There are.

1 Copyright © 2011, Elsevier Inc. All rights Reserved. Size Analysis and Identification of Particles Chapter 4 Roger W. Welker.

By D. Fisher Geometric Transformations. Reflection, Rotation, or Translation 1.

Jeopardy Q 1 Q 6 Q 11 Q 16 Q 21 Q 2 Q 7 Q 12 Q 17 Q 22 Q 3 Q 8 Q 13

Jeopardy Q 1 Q 6 Q 11 Q 16 Q 21 Q 2 Q 7 Q 12 Q 17 Q 22 Q 3 Q 8 Q 13

THE EXTERNAL HAZARD.

LaB6 Scanning Electron Source

Problem 1.11 Do the following statements describe chemical or physical properties? Oxygen gas supports combustion Fertilizers help to increase agricultural.

Calibration Techniques

PP Test Review Sections 6-1 to 6-6

Atomic Absorption Spectrometer

Teledyne Analytical Instruments

Developments in Process Gas Analysis Robert Wright, Thermo ONIX.

Sensor Operating Theory

Exarte Bezoek aan de Mediacampus Bachelor in de grafische en digitale media April 2014.

Adding Up In Chunks.

X-rays Long Wave IR Visible UV X-rays Gamma rays wavelength (nm) Frau Röntgen's hand.

Addition 1’s to 20.

Analyzing Genes and Genomes

Essential Cell Biology

PSSA Preparation.

Essential Cell Biology

1 Chapter 13 Nuclear Magnetic Resonance Spectroscopy.

Energy Generation in Mitochondria and Chlorplasts

High-Speed PIXE A spatially resolved PIXE setup at the

Presidential Fitness Program Pull/Push upMile RunShuttle RunSit-UpsV-Sit Stretch.

1 Density Calculations In this section, you will learn how to find the molarity of solution from two pieces of information (density and percentage). Usually.

Faculty of Medicine Ain Shams University Medical Biochemistry & Molecular Biology Department 1 Methods expressing Concentrations of solutions.

Ion beam Analysis Joele Mira from UWC and iThemba LABS Tinyiko Maluleke from US Supervisor: Dr. Alexander Kobzev Dr. Alexander Kobzev.

Saeedeh Ghaffari Nanofabrication Fall 2011 April 15 1.

FLAME SPECTROSCOPY The concentration of an element in a solution is determined by measuring the absorption, emission or fluorescence of electromagnetic.

Spectroscopy Lecture 4 Ahmad Razali Bin Ishak Department of Environmental Health Faculty of Health Sciences UiTM Puncak Alam.

PROVIDED BY EMAD BEHDAD SPECIALIZED PROTECTION AND CORROSION OF MATERIALS LECTURERS H.MONAJATI,PHD JAFARI,PHD ISLAMIC AZAD UNIVERSITY OF NAJAFABAD BARANCH.

Atomic Absorption and Atomic Fluorescence Spectrometry Wang-yingte Department of Chemistry

HL Chemistry - Option A: Modern Analytical Chemistry ATOMIC ABSORPTION SPECTROSCOPY.

Flame photometry.

E nergy D ispersive X -ray Fluorescence Spectrometer E nergy D ispersive X -ray Fluorescence Spectrometer EDX-720 Training.

NON DESTRUCTIVE CHEMICAL ANALYSIS

X-Ray Fluorescence Analysis by Gergana Hristozova Project supervisor: s. eng. M. Gustova FLNR.

Environmental analysis applying inner-shell spectroscopies and the molecular orbital theory Jun Kawai Kyoto University Acknowledgements S. Kunimura, N.

Total X-ray Fluorescence Spectroscopy (TXRF) Contact: World Agroforestry Centre (ICRAF), P.O. Box Nairobi, Kenya. Tel:

Atomic Absorption Spectroscopy

EDS Energy Dispersive Spectroscopy

Sample A : Carbon (C) Carbon Crushingbrittle Conductivityyes Reactivity w/acidno Reactivity w/CuCl 2 no.

Atomic Absorption Spectrometer Varian SpectrAA Model 220FS.

Fluorometric determination of riboflavin

Fluorometric determination of riboflavin. Introduction.

Parts per Million Concentration. Parts per Million (ppm) is the ratio of the number of grams of solute for every one million grams of solution. parts.

Nuclear Instrumentation Laboratory Federal University of Rio de Janeiro -BRAZIL X-ray Fluorescence and X-ray Transmission Microtomography Imaging System.

Elemental Analysis of Colorectal Cancerous Samples using XRF Techniques A Biophysics Project for SESAME JSPS ’ 02 Al Balqa Applied University Salt Jordan.

COMPARISON OF DIFFERENT ANALYTICAL TECHNIQUES FOR ENVIRONMENTAL MONITORING OF CONTAMINATED SOILS Metodi Mladenov, Daria Ilieva University of Chemical Technology.

SEM- Schematic Overview. Electron Detection Tungsten Filament Electron Source.

Atomic Fluorescence Spectroscopy. Background l First significant research by Wineforder and Vickers in 1964 as an analytical technique l Used for element.

Atomic-absorption spectroscopy

ATOMIC ABSORPTION SPECTROSCOPY (AAS) Atomization: It is the conversion of molecules to their component atoms in gaseous state using a source of heat (flame).

A TOMIC - ABSORPTION SPECTROSCOPY. Atomic absorption spectroscopy (AAS) is a technique for determining the concentration of a particular metal element.

Atomic-absorption spectroscopy Lab3 Atomic-absorption spectroscopy.

Fluorometric determination of riboflavin

EBB 245. Materials Characterisation Lecture 3 X-ray Fluorescence Spectrometry (XRF) Dr Zainovia Lockman PPKBSM, USM (lecture presentations/notes.

iCAP OES Analysis of Trace Elements in Hair

Instrument Parameters in WDXRF

آزمایشگاه فارماکولوژی و سم شناسی

Photo 11/12/2018.

Atomic Absorption Spectroscopy. Atomic absorption spectroscopy is based on the same principle as the flame test used in qualitative analysis.

FLAME SPECTROSCOPY The concentration of an element in a solution is determined by measuring the absorption, emission or fluorescence of electromagnetic.

Presentation transcript:

LIMITS OF DETECTION OF AN TOTAL REFLECTION SYSTEM WITH DOUBLE REFLECTION MODULE V. F. Nascimento Filho 1,2, V. H. Poblete 3 P., P. S. Parreira 1,4, E. Matsumoto 5, S. M. Simabuco 5, E. P. Espinoza 1 V., A. A. Navarro 1 1 Laboratório de Instrumentação Nuclear/CENA/USP 2 Departamento de Física e Meteorologia/ESALQ/USP 3 Laboratório de Fluorescencia de Rayos X/CCHEN, Chile 4 Departamento de Física/CCE/UEL 5 Departamento de Recursos Hídricos/FEC/UNICAMP Financial support: FAPESP

INTRODUCTION CHARACTERISTICS OF THE TECHNIQUE: MULTIELEMENTAR, SIMULTÂNEOUS AND INSTRUMENTAL ATOMIC NUMBER > 13 HIGH GEOMETRIC EFFICIENCY DETECTION LOW SAMPLE VOLUMES MATRIX EFFECT CORRETION NOT NECESSARY LOW LIMITS OF DETECTION CAN BE USED FOR : ENVIRONMENTAL MONITORING BIOLOGICAL FLUIDS CONTROL QUALITY OF HIGH PURITY PRODUCTS SOLID SAMPLES (AFTER DIGESTION)

Photo and scheme: Total reflection fluorescence system (TXRF): visualization of the tower with the X-ray tube (XRT), high voltage generator (HVG), X-ray detector (XRD) and the total reflection module (TRM).

OBJECTIVES DOUBLE REFLECTOR MODULE ADJUSTMENT ELEMENTARY SENSITIVITIES DETERMINATION LIMITS OF DETECTION DETERMINATION

MATERIALS and METHODS !X-RAY TUBE: Mo targe, Zr filter, 45 kV/20 mA !TOTAL REFLECTION MODULE: SORAD, Chile !X-RAY DETECTOR: semicondutor Si(Li), 30 mm 2 !PULSE HEIGHT MULTICHANNEL ANALYZER: Canberra !X-RAY SPECTRA FITTING: AXIL !ELEMENTS Cr, Fe, Cu e Zn !STANDARD SOLUTIONS: 2,17 - 8, ,38 e 31,25 ppm !INTERNAL STANDARD: Y !SAMPLE SUPPORT: quartz !SAMPLE VOLUME ON SUPPORT: 5 microliters !EXCITATION/DETECTION TIME: 500 segundos

QUANTITATIVE ANALYSIS C i = concentration of the element i S i = relative sensitivity of the element i R i = relative intensity of the element i I i = intensity of the element i I y = intensity of the internal standard C y = concentration of the internal standard

CONCLUSIONS LIMIT OF DETECTION volume of the sample on the support: 50 microliters excitation/detection time: 1000 seconds CHROMIUM IRON COPPER ZINC liquid samples: ppb solid sample: 10 mg digestion; 1 ml final volume ppm aerosol filter: 10 m 3 collected volume; digestion; 1 ml final volume ng/m 3 Financial support: FAPESP

RELATIVE SENSITIVITY

LIMITS OF DETECTION

REGRESSION LINES