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Characterizing Phosphine Movement in Upright Concrete Grain Elevators By Carl Reed

This study by Carl Reed at Kansas State University explores the movement of phosphine, a fumigant, in upright concrete grain elevators. It investigates various structures and factors that influence the concentration of phosphine in different areas of the elevator. The research provides insights into the distribution of phosphine and its impact on worker safety.

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Characterizing Phosphine Movement in Upright Concrete Grain Elevators By Carl Reed

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  1. Characterizing Phosphine Movement in Upright Concrete Grain Elevators By Carl Reed Kansas State University

  2. KSU Studies on Movement of Phosphine in Grain Elevators

  3. Gallery Fill Port Wall Vents Headspace Intervents Discharge Spout Structures that influence fumigant movement in the fumigated grain

  4. Phosphine concentrations in the headspace of an elevator bin

  5. Phosphine concentration in headspace and the difference between air temperature and grain temperature

  6. Phosphine concentrations in the headspace and wind speed

  7. Fumigant Movement in 15 ‘ by 140 ‘ Bins Tablets in Bottom of Bin Courtesy D. Bigler 3/27 3/28 3/29 3/30 3/31 4/03

  8. Phosphine concentrations in the headspace of a bin in which all fumigant was applied to grain in the bottom half of the bin

  9. Phosphine Concentrations 0 ppm 0-0.3 ppm 0.31-1.0 ppm 1.01-3.0 ppm >3.01 ppm Location % Mean % Mean % Mean % Mean % Mean Ground Insidea 71.9 - 22.3 0.09 3.8 0.55 1.6 2.07 0.4 4.8 Bin-Top Insidea 27.2 - 37.9 0.11 17.3 0.58 11.8 1.75 5.8 5.12 Ground Outsideb 99.0 - 1.0 0.02 0.0 - 0.0 - 0.0 - Bin-Top Outsideb 90.0 - 9.9 0.05 0.1 0.51 <0.1 1.08 0.0 - Phosphine concentration ranges at various parts of the elevators a Distribution significantly (p<0.01) related to location in inside worker areas b Distribution significantly (p<0.01) related to location outside the elevator

  10. Phosphine concentrations in worker breathing zones in the headhouse of a country elevator

  11. Phosphine distribution in 18’ by 85’ BinAir and grain about same temperatureBin fumigated 1/3/01 at 10’ layers

  12. Fumigant Movement in 18’ by 85’ binFumigant layered at 10’ intervals, grain cooler than ambient air

  13. Phosphine Levels in the Tunnelwhen Fumigant Movement was Downward Fumigated Bin Vents 0.68 ppm 1.7 ppm 2.0 ppm 1.8 ppm 3.1 ppm 0.28 ppm 0.28 ppm 0.15 ppm

  14. Phosphine concentrations as affected by mechanical controls in the gallery of a terminal elevator

  15. Movement of Phosphine in Elevators Carl Reed Kansas State University

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