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| Effect of elevated carbon dioxide on physiological changes and productivity of forage crops | |
| R.K. Bhat | |
| 项目主持机构 | Indian Grassland & Fodder Research Institute |
| 开始日期 | 2000 |
| 结束日期 | 2003 |
| 英文摘要 | Project Research Results Final Report 1999 Progress Report 1998 1997 4 publications for this project 4 journal articles for this project Related Information Research Grants P3: Student Design Competition Research Fellowships Small Business Innovation Research (SBIR) Grantee Research Project Results Search Development of a Semi-Continuous Monitor for Determination of Trace Elements and Heavy Metals in Ambient Aerosol Particles EPA Grant Number: R825269 Title: Development of a Semi-Continuous Monitor for Determination of Trace Elements and Heavy Metals in Ambient Aerosol Particles Investigators: Ondov, John M. , Koutrakis, Petros Current Investigators: Ondov, John M. , Koutrakis, Petros , O'Haver, T. C. Institution:University of Maryland , Harvard T.H. Chan School of Public Health Current Institution:University of Maryland EPA Project Officer: Hahn, Intaek Project Period: November 15, 1996 through November 14, 1999 (Extended to November 14, 2000) Project Amount: $395,885 RFA: Air Quality (1996)RFA Text | Recipients Lists Research Category:Air Quality and Air Toxics ,Air Description: Recent advances in aerosol sampling technology combined with state-of-the-art, commercially-available analytical instrumentation promise to permit dramatic improvements in time scales for aerosol sampling and elemental analysis, making possible, for the first time, development of a semi-continuous, near-real-time monitor for atmospheric concentrations of toxic elemental constituents at current ambient levels. Herein, we propose to develop such an instrument using proven, state-of-the-art aerosol concentrator and multielement Atomic Absorption technologies with direct aerosol injection . Objectives of the proposed study will be to: 1) develop an aerosol concentrator system suitable for interface with a commercially-available, 8-channel simultaneous multielement graphite-furnace Atomic Absorption Spectrometer, 2) characterize its particle transfer efficiency, 3) evaluate calibration procedures for multi-elemental analyses, 4) determine optimum sampling and analysis conditions for analyses of various sets of simultaneously-determined elements, and 5) field test the system in urban and rural environments. Expected results of this study will be the development of a semi-continuous monitor for near-real-time determinations of elemental constituents of atmospheric aerosol particles. Benefits of semi-continuous sampling and near-real-time elemental analyses of atmospheric aerosol particles will be enormous for virtually all studies seeking to determine the concentrations, sources, and dry depositional fate of toxic trace elements and heavy metals in suspended aerosol particles. Publications and Presentations: Publications have been submitted on this project:View all 4 publications for this project Journal Articles: Journal Articles have been submitted on this project:View all 4 journal articles for this project Supplemental Keywords: air, ambient air, atmosphere, tropospheric, exposure, particulates, metals, heavy metals, environmental chemistry, measurement methods, Maryland, MD, Region 3., RFA, Scientific Discipline, Air, Geographic Area, particulate matter, air toxics, Environmental Chemistry, State, tropospheric ozone, Atmospheric Sciences, environmental monitoring, monitoring, calibration procedures, spectroscopic studies, ecological assessment, Maryland (MD), atmospheric chemical cycles, atmospheric aerosol particles, atmospheric monitoring, aerosol sampling, atomic absorption technology, aerosol production, aerosols, metals Progress and Final Reports: 1997 1998 1999 Progress Report Final ReportProject Research Results Final Report 1999 Progress Report 1998 1997 4 publications for this project 4 journal articles for this project Related Information Research Grants P3: Student Design Competition Research Fellowships Small Business Innovation Research (SBIR) Grantee Research Project Results Search Development of a Semi-Continuous Monitor for Determination of Trace Elements and Heavy Metals in Ambient Aerosol Particles EPA Grant Number: R825269 Title: Development of a Semi-Continuous Monitor for Determination of Trace Elements and Heavy Metals in Ambient Aerosol Particles Investigators: Ondov, John M. , Koutrakis, Petros Current Investigators: Ondov, John M. , Koutrakis, Petros , O'Haver, T. C. Institution:University of Maryland , Harvard T.H. Chan School of Public Health Current Institution:University of Maryland EPA Project Officer: Hahn, Intaek Project Period: November 15, 1996 through November 14, 1999 (Extended to November 14, 2000) Project Amount: $395,885 RFA: Air Quality (1996)RFA Text | Recipients Lists Research Category:Air Quality and Air Toxics ,Air Description: Recent advances in aerosol sampling technology combined with state-of-the-art, commercially-available analytical instrumentation promise to permit dramatic improvements in time scales for aerosol sampling and elemental analysis, making possible, for the first time, development of a semi-continuous, near-real-time monitor for atmospheric concentrations of toxic elemental constituents at current ambient levels. Herein, we propose to develop such an instrument using proven, state-of-the-art aerosol concentrator and multielement Atomic Absorption technologies with direct aerosol injection . Objectives of the proposed study will be to: 1) develop an aerosol concentrator system suitable for interface with a commercially-available, 8-channel simultaneous multielement graphite-furnace Atomic Absorption Spectrometer, 2) characterize its particle transfer efficiency, 3) evaluate calibration procedures for multi-elemental analyses, 4) determine optimum sampling and analysis conditions for analyses of various sets of simultaneously-determined elements, and 5) field test the system in urban and rural environments. Expected results of this study will be the development of a semi-continuous monitor for near-real-time determinations of elemental constituents of atmospheric aerosol particles. Benefits of semi-continuous sampling and near-real-time elemental analyses of atmospheric aerosol particles will be enormous for virtually all studies seeking to determine the concentrations, sources, and dry depositional fate of toxic trace elements and heavy metals in suspended aerosol particles. Publications and Presentations: Publications have been submitted on this project:View all 4 publications for this project Journal Articles: Journal Articles have been submitted on this project:View all 4 journal articles for this project Supplemental Keywords: air, ambient air, atmosphere, tropospheric, exposure, particulates, metals, heavy metals, environmental chemistry, measurement methods, Maryland, MD, Region 3., RFA, Scientific Discipline, Air, Geographic Area, particulate matter, air toxics, Environmental Chemistry, State, tropospheric ozone, Atmospheric Sciences, environmental monitoring, monitoring, calibration procedures, spectroscopic studies, ecological assessment, Maryland (MD), atmospheric chemical cycles, atmospheric aerosol particles, atmospheric monitoring, aerosol sampling, atomic absorption technology, aerosol production, aerosols, metals Progress and Final Reports: 1997 1998 1999 Progress Report Final ReportProject Research Results Final Report 1999 Progress Report 1998 1997 4 publications for this project 4 journal articles for this project Related Information Research Grants P3: Student Design Competition Research Fellowships Small Business Innovation Research (SBIR) Grantee Research Project Results Search Development of a Semi-Continuous Monitor for Determination of Trace Elements and Heavy Metals in Ambient Aerosol Particles EPA Grant Number: R825269 Title: Development of a Semi-Continuous Monitor for Determination of Trace Elements and Heavy Metals in Ambient Aerosol Particles Investigators: Ondov, John M. , Koutrakis, Petros Current Investigators: Ondov, John M. , Koutrakis, Petros , O'Haver, T. C. Institution:University of Maryland , Harvard T.H. Chan School of Public Health Current Institution:University of Maryland EPA Project Officer: Hahn, Intaek Project Period: November 15, 1996 through November 14, 1999 (Extended to November 14, 2000) Project Amount: $395,885 RFA: Air Quality (1996)RFA Text | Recipients Lists Research Category:Air Quality and Air Toxics ,Air Description: Recent advances in aerosol sampling technology combined with state-of-the-art, commercially-available analytical instrumentation promise to permit dramatic improvements in time scales for aerosol sampling and elemental analysis, making possible, for the first time, development of a semi-continuous, near-real-time monitor for atmospheric concentrations of toxic elemental constituents at current ambient levels. Herein, we propose to develop such an instrument using proven, state-of-the-art aerosol concentrator and multielement Atomic Absorption technologies with direct aerosol injection . Objectives of the proposed study will be to: 1) develop an aerosol concentrator system suitable for interface with a commercially-available, 8-channel simultaneous multielement graphite-furnace Atomic Absorption Spectrometer, 2) characterize its particle transfer efficiency, 3) evaluate calibration procedures for multi-elemental analyses, 4) determine optimum sampling and analysis conditions for analyses of various sets of simultaneously-determined elements, and 5) field test the system in urban and rural environments. Expected results of this study will be the development of a semi-continuous monitor for near-real-time determinations of elemental constituents of atmospheric aerosol particles. Benefits of semi-continuous sampling and near-real-time elemental analyses of atmospheric aerosol particles will be enormous for virtually all studies seeking to determine the concentrations, sources, and dry depositional fate of toxic trace elements and heavy metals in suspended aerosol particles. |
| 英文关键词 | air;ambient air;atmosphere;tropospheric;exposure;particulates;metals;heavy metals;environmental chemistry;measurement methods;Maryland;MD;Region 3. |
| 学科分类 | 07 - 农业科学 |
| 资助机构 | IN-DST |
| 项目经费 | 1430995 |
| URL | http://www.nstmis-dst.org/EMR/EMR2000-01/ViewData.aspx?id=3&sub=Agricultural+Sciences |
| 国家 | IN |
| 语种 | 英语 |
| 文献类型 | 项目 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/77058 |
| 推荐引用方式 GB/T 7714 | R.K. Bhat.Effect of elevated carbon dioxide on physiological changes and productivity of forage crops.2000. |
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