SECOND FRENCH-SERBIAN SUMMER SCHOOL

Slides:

Advertisements

Similar presentations

Assessing Risk of Heavy Metals Input in Food Chain. 1. Introduction Among the many elements that occur in the natural environment about 60% of them are.

Advertisements

Chapter 20 Molecular Mass Spectrometry Mass spectrometry is capable of providing information about (1) the elemental composition of samples of matter.

FC-MS from Teledyne Isco CombiFlash ® a Name You Can Rely On.

Introduction to Chemistry Activity. SJWP June 18, Fish Kill Scenario There has been a massive fish kill in Lake St. Louis. Your team has been dispatched.

Using tracers to investigate hydrology and biogeochemistry BEE 3710 Spring 2011.

+ Water Quality & Human Health: From Arsenic Exposure to Biological Response Understanding how contaminants move through the environment UNC Superfund.

Kelsie & Luke Bio 1000 Water Use & Management and Water Pollution.

Chapter 14 Water Pollution. Water pollution- the contamination of streams, rivers, lakes, oceans, or groundwater with substances produced through human.

Chapter 14 Water Pollution. Water pollution- the contamination of streams, rivers, lakes, oceans, or groundwater with substances produced through human.

12-1 Molecular Mass Spectroscopy Molecular structure Composition of mixtures Molecular mass spectra Ion Source Mass Spectrometers Applications.

Mass Spectrometry Courtesy Purpose of Mass Spectrometry  Produces spectra of masses from the molecules in a sample of material, and.

Mass Spectrometry The substance being analyzed (solid or liquid) is injected into the mass spectrometer and vaporized at elevated temperature and reduced.

Enviromental aspects of Brownfield Regeneration Barbara Vojvodíková, Marcela Maturová „This project has been funded with support from the European Commission.

Chapter 21 Water Pollution

Mass spectrometry is an analytical tool that makes use of the mass to charge ratio of particles to determine the molecular formula of a compound. In the.

WHAT Causes WATER POLLUTION?

HUMAN IMPACT ON WATER BY: MR. MERINGOLO. THERE IS LOTS OF WATER, SO WHAT’S THE PROBLEM? Approximately 97 % of water is salty, which leaves only 3 % as.

Enviromental aspects of Brownfield Regeneration Barbara Vojvodíková, Marcela Maturová „This project has been funded with support from the European Commission.

Kiersten Honig. Lynnhaven River Watershed Comprises approximately 64 square miles of land and water, with nearly 150 miles of shoreline Used to be a prime.

SURVEY OF CHEMISTRY I CHEM 1151 CHAPTER 2 DR. AUGUSTINE OFORI AGYEMAN Assistant professor of chemistry Department of natural sciences Clayton state university.

Atomic Structure 2.2: The Mass Spectrometry. Operation of Mass Spec Describe and explain the operation of a mass spectrometer What’s it for? A mass spectrometer.

Fundamental Chemical Laws

Earth Science: 15.1 Ocean Water and Life

Water Pollution Chapter 22. Water Pollution Any physical or chemical change in water that adversely affects the health of humans and other organisms.

Examining Bioaccumulation & Biomagnification: Implications for Ecosystems and Human Health.

Grade 7/8 FLUIDS JEOPARDY T H I S I S J E O P A R D Y.

Civil Engineers: Environmental Engineering Erik R. Coats, PE, Ph.D. CE 115 November 10, 2005.

Water Pollution.  Anything that impacts the quality of water?  But naturally occurring events like volcanos, storms, earthquakes and algae blooms generate.

Solids in Seawater. © 2006 Brooks/Cole, a division of Thomson Learning, Inc. Look For The Following Key Ideas In Chapter 7 The polar nature of the water.

SNC2D Brennan Climate Change. Paleoclimate record Ice samples Sediment cores Pollen records Peat Bogs Fossil records Proxies –Use data that represents.

8 th Grade Science Unit 7: Changes in the Earth Lesson 2: Global Warming – Who Moved the Carbon? Vocabulary of Instruction.

RAP 1._____ layer of atmosphere that weather occurs in (atm layers) 2._____ most abundant gas in the atmosphere (atmosphere) 3._____changes from water.

Water Unit Water, Water, Everywhere The Hydrosphere all life depends on water Water Quality.

Chemistry Topic: Atomic theory Subtopic : Mass Spectrometer.

Atomic Mass/Percent Composition. Average of Isotopes Every element typically exists in several isotope forms Isotopes are atoms of the same element with.

Mass spectrometry (Test) Mass spectrometry (MS) is an analytical technique that measures masses of particles and for determining the elemental composition.

Ecological Succession Science 10. Ecological succession  refers to the series of ecological changes that every community undergoes over long periods.

Chemical Pollutants in the Pacific Basin David O. Carpenter, MD Director Institute for Health and the Environment.

Area I Burn Pit Santa Susana Field Laboratory RCRA Facility Investigation Work Plan February 19, 2008 Laura Rainey, P.G. Senior Engineering Geologist California.

Isotopic Abundance SCH 3U. Atomic Mass The mass of an atom (protons, neutrons, electrons) Relative Atomic Mass: An element’s atomic mass relative to the.

Groundwater Pollution Nanotechnology. Nanotechnology involves the manipulation and understanding of matter at the molecular or atomic level. Due to the.

Persistent Organic Pollutants (POPs) Mel Jordan & Taylor Park.

Mass Spectroscopy Introduction.

Water Pollution 7SCIENCE. What are some types of water pollution? Bacteria and viruses Untreated sewage and garbage Radioactive waste Chemicals like pesticides,

Chapter 21 Water Pollution. Types of Water Pollution  Water pollution  Any physical or chemical change in water that adversely affects the health of.

Videos from sea floor s s

STORMWATER SAMPLING OF OIL PRODUCTS USING SEMIPERMEABLE MEMBRANE DEVICES (SPMDs) Per-Anders Bergqvist, *Lina Ulčinienė, *Viktoras Račys and *Audronė Žaliauskienė.

In MS a molecule is vaporized and ionized by bombardment with a beam of high-energy electrons. E = 1600 kcal (or 70 eV). C-C BDE = 100 kcal Mass Spectrometry.

MC 13.3 Spectroscopy, Pt III 1 Introduction to Mass Spectrometry (cont) Principles of Electron-Impact Mass Spectrometry:  A mass spectrometer produces.

Chapter 22 Water Pollution

Mass Spectrometry Relative atomic masses and the mass of individual isotopes can be determined using a mass spectrometer. The principle behind mass spectrometry.

WELCOME STUDENTS Mobile : Skype: aamarpali.puri.

Solvents and solutions. Pure water and impure water Pure water contains no other substances mixed with it (dissolved or not dissolved). Water from rivers,

© 2014 Pearson Education, Inc. Chapter 5 Water and Seawater Salinity.

Niels Crosley Munksgaard

Dissolved Oxygen Pollution Types.

Continuous O 2 /Ar measurements in surface sea water by membrane inlet mass spectrometry Jan Kaiser and Michael L. Bender Department of Geosciences, Princeton.

Chapter 4 Section 2.

Mass Spectrometry Courtesy

Instrumental Chemistry

4 From Chemistry to Energy to Life Part A

Structure Determination: Mass Spectrometry and Infrared Spectroscopy

What can you tell about the occurrence on these pictures?

UNC Superfund Research Program

Mass Spectrometry Courtesy

Chapter 4 Section 2.

Mass Spectrometry (MS)

Environmental/Energy policy

Presentation transcript:

SECOND FRENCH-SERBIAN SUMMER SCHOOL CHLORINE ISOTOPS DETERMINATION FOR TRACKING ORGANIC POLUTANTS REMEDIATION V.R.DJORDJEVIĆ, S.R.VELIČKOVIĆ, J.M. CVETIĆANIN, J.B. DJUSTEBEK, M.V. VELJKOVIĆ AND O.M. NEŠKOVIĆ Vinča Institute of Nuclear Sciences, Department of Physical Chemistry, Belgarde, Serbia

Water pollution Water pollution is a major problem in the global context Accounts for the deaths of more than 14,000 people daily Major changes in water quality and the ecological status of water can be caused by natural phenomena such as volcanoes, algae blooms, storms, and earthquakes Water pollution is a large set of negative effects upon water bodies such as lakes, rivers, oceans, and groundwater caused by human activities

REMEDIATION Remediation means providing a remedy, so environmental remediation deals with the removal of pollution or contaminants from environmental media such as soil, groundwater, sediment, or surface water for the general protection of human health and the environment.

ORGANIC TOXIC MATERIAL Chlorinated organic compounds are believed to cause health risks such as cancer, endocrine system disruption, birth defects, immune system disorders, and reduced fertility Trichloroethylene, ethylene dichloride, vinyl chloride, PCBs, chlorobenzene, and many chlorinated solvents, insecticides, and herbicides are the most common chlorinated organic toxic materials Do you remember the story of DDT?

CHLORINE ISOTOPES and MASS SPECTROMETRY Chlorine has the two naturally occurring isotopes, 35Cl and 37Cl, with relative abundances of about 0.7553 and 0.2547, respectively. The ratio of 37Cl/35Cl ions is remarkably constant in nature. Isotopic compositions are reported in per mil (‰) deviation from isotopic standard reference materials using the conventional δ notation: δ = [(Rsample/Rstandard)-1] x 1000; where R = 37Cl/35Cl. Mass spectrometric methods are based on the ratio of 35Cl and 37Cl ions, but… CH3Cl+, HCl

Mass spectrometer used in this investigation was a 12-inch radius, 90° sector, magnetic instrument of local design. A triple Rhenium filament thermal ionization source was used in experimental setup.

SO WHAT DID WE DO? The evaporation (sample) filament was doped with water samples and Cs2CO3 used as a reagent directly to develop Cs2Cl+ ions in the mass ion source. Cs is monoisotopic, therefore ratio of 303/301 masses of Cs237Cl+/Cs235Cl+ correspond to ratio of 37Cl /35Cl. The Cs2Cl+ ion has low ionization potential suitable for thermal ionization analysis.

ALSO…. The filaments were treated with 3 µl of the graphite slurry or to coat the whole filament. The addition of graphite in filament loading significantly enhances Cs2Cl+ emission from CsCl. The data were collected by switching magnetically between the masses 301 and 303. Obtained results for various samples of sea water at various temperature range were in good correlation with the expected ones.

CONCLUSION Chlorine isotopic determination for tracking organic pollutants remediation via thermal ionization mass spectrometry is proposed as a simple procedure. The information provided in such way can prove chlorine stable isotope variation in contaminated nature samples to be significant, judging the origin of pollutant and paths of its remediation.