'Cr iii' presentation slideshows

729 views • 63 slides

iAs continues to poison the drinking water of tens of millions of people around the world

iAs continues to poison the drinking water of tens of millions of people around the world. More than 2.3 million people in North Carolina use water from private, unregulated wells . Data from 2009. Sanders et al 2011. >63,000 wells over 10 yrs Max=800 ppb

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Enantioselective Formation of Quaternary Carbon Centers

Enantioselective Formation of Quaternary Carbon Centers. Cory C. Bausch November 18, 2004. Outline. Introduction Types of Reactions Alkylations Diels-Alder Cyclopropanation Pd Catalyzed Reactions Chiral Transfer Reactions Summary. Introduction.

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ASSESSING PAST USE OF TANNERY WASTE SLUDGE AS FARM FIELD FERTILIZER IN NORTHWEST MISSOURI

ASSESSING PAST USE OF TANNERY WASTE SLUDGE AS FARM FIELD FERTILIZER IN NORTHWEST MISSOURI. July 20, 2010 ITRC Meeting Seattle, WA. BACKGROUND. Sludge applied 1983-2009 56,000 acres affected 100+ locations across 4 counties Concern about risk posed by hexavalent chromium (Cr VI) in sludge.

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2009 AP Government FRQ Lesson Plans

2009 AP Government FRQ Lesson Plans. Doug Trotter John Overton High School Nashville, TN James.trotter@mnps.org.

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curriculum in natural environmental science, vol. 2, 2010

Reservoirs as a trap for pollutants Ewa Szalinska Krakow University of Technology, Krakow, Poland. Institute of Water Supply and Environmental Protection Cracow University of Technology Krakow, ul. Warszawska 24, 31-155 Poland. curriculum in natural environmental science, vol. 2, 2010.

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Toxikologie

318 views • 14 slides

Nano Technologies for Improved Oil & Gas Recovery

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Studying the Spectrochemical Series: Crystal Fields of Cr(III)

Studying the Spectrochemical Series: Crystal Fields of Cr(III). Objectives: --synthesize series of Cr(III) compounds --calculate crystal field splitting energies using electronic spectroscopy. Spectrochemical Series

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(1) M. Omole, V. Okello, V. Lee, L. Zhou, O. A. Sadik, ACS Catalysis , 2011, 1, 139-146. ;

Nanostructured Membrane that Captures, Removes and Catalytically Reduces Chromium (VI) to Cr(III) Omowunmi Sadik, SUNY at Binghamton, DMR 1007900.

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Kinetics of Chromium(III) Oxidation by Manganese(IV) Oxides Using

Kinetics of Chromium(III) Oxidation by Manganese(IV) Oxides Using Quick Scanning X-ray Absorption Fine Structure Spectroscopy (Q-XAFS). G. Landrot, M. Ginder-Vogel, and D. L. Sparks Delaware Environmental Institute, Department of Plant and Soil Sciences, University of Delaware.

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Basalt Weathering of the basalt by CO 2 -rich fluids release Mn(II) to solution

Fe(III) removed, partially as colloidal FeOOH particles, partially incorporated in saponite. Mn(II) + oxygenated seawater = nano- microsized colloidal Mn(IV). Vein. Chromite Cr(III), Fe(II). Mn(IV). Basalt Weathering of the basalt by CO 2 -rich fluids release Mn(II) to solution.

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C omparison of T oxic E ffects of C hromium III and VI on T omato P lants

Dry weight (g). shoot-root weight ratio. [Cr] ( ? M). Chlorophyll (r.u.). RWC (%). [Cr] ( ? M). Cr III 40 ? M. Cr VI 20 ? M. Control. [Cr] ( ? M). [Cr] ( ? M). IRGA A (mmol CO 2 m -2 s -1 ). stomatal conductance (gs) 13h. [Cr] ( ? M). [Cr] ( ? M).

155 views • 1 slides