Tyson, Julian

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Emeritus Professor, Department of Chemistry
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There is a continuing need for the development of improved methods for the determination of trace species in complex matrices in support of problem solving in areas related to nutrition, clinical studies, environmental contamination and the biogeochemical cycling of key elements, including aluminum, antimony, arsenic, cadmium, lead, mercury and selenium. In the past, my group has worked with microfluidic technologies--flow injection, continuous flow and liquid chromatography--together with element-specific detection (based on optical and mass atomic spectrometry) with pretreatment by solid-phase extraction and vapor generation. We have also worked on the determination of anions by molecular spectrometry, electrochemistry and quartz crystal microgravimetry. Sample materials also include, foods, beverages, dietary supplements, and clinical materials. Professor Uden collaborated on many projects. Now that I have emeritus status, our focus is on the development of low-cost (field-portable) methods for the determination of inorganic arsenic in waters and rice. In the past, research projects involved academic visitors, postdocs, graduate students, undergraduates, and K-12 students and their teachers. Currently, only undergraduates, high school students and one teacher are involved. We are collaborating with Chemists Without Borders on some of these projects. See    

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Now showing 1 - 6 of 6
  • Publication
    How Much Arsenic Do We Eat?
    (2013-01-01) Tyson, Julian
  • Publication
    Arsenic project topics
    (2011-01-01) Tyson, Julian
    How do analytical chemists make light work in tracking potentially harmful chemicals?
  • Publication
    Concentration, Amount and Counting by Weighing
    (2018-01-01) Tyson, Julian
    Concentration, Amount and Counting by Weighing UMass Amherst STEM Ed Institute Saturday Workshop 2/3/2018 Julian Tyson, Professor Emeritus, Department of Chemistry. Session 1. Introductions. Ice-breaker: The elementarity contest. Setting the scene: “How much arsenic do we eat?” Why do we want to know? The Consumer Reports articles (Nov 2012 and Nov 2014) Dealing with really big and really small numbers. Session 2. Amount, concentration Solids, liquids and gases. The “parts per” concept. Session 3. Counting by weighing The count equation. Rice grains (the bottle content problem), atoms and molecules.. Chemical formulas and balanced chemical expressions. The numbers in the periodic table. Applications in chemical analysis Session 4. Scaffolding students. More on the arsenic-in-rice story Wee Mac’s Sandwich Shop and the Wee Mac dozen, bread + cheese + turkey (BCT) From everyday experiences to parts per billion. Amount vs concentration. Sample problems.
  • Publication
    Proposal Summary
    (2002-01-01) Daviis, Kathleen; Tyson, Julian; Sternheim, Morton
  • Publication
    2016 Newsletter
    (2016-01-01) Tyson, Julian; Griffith, Kevin
    PVSTEMNet Update, Pg. 2 Arsenic Education, Pg. 3-6 UMass Biotech Initiatives, Pg. 7-8 BioTeach Program, Pg. 9 NSTA Award, Pg. 10 Cosmos Course, Pg.11 Humor and Climate, Pg. 12-13 More Cli-Sci Fiction, Pg. 14 Science and Engineering Saturday Seminars, Pg. 15-16 Tuesday Talks, Pg. 17-18
  • Publication
    Full Project Proposal
    (2002-01-01) Tyson, Julian; Daviis, Kathleen; Sternheim, Morton