@article{
 title = {Determination of size-dependent dry particle deposition velocities with multiple intrinsic elemental tracers},
 type = {article},
 year = {1998},
 pages = {1615-1622},
 volume = {32},
 id = {8d04e31c-c0be-3055-9171-4000fade2fcd},
 created = {2014-10-08T16:28:18.000Z},
 file_attached = {false},
 profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},
 group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},
 last_modified = {2017-03-14T17:32:24.802Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 citation_key = {Caffrey:EST:1998a},
 source_type = {article},
 private_publication = {false},
 abstract = {Dry deposition flux and aerosol size distribution
measurements were made concurrently aboard the RV Lake Guardian 19
km east of the Chicago shoreline during summer 1994 to assess
atmospheric inputs of minor and trace elements to southern Lake
Michigan. Size-segregated aerosol measurements were made over
consecutive 12-h periods with Micro-Orifice and Noll Rotary
impacters (MOI and NRI), and depositing-particulate collections to
aerodynamically smooth airfoils were made over periods of 3-4 days.
The combination of the MOI and NRI provided size-segregated
particulate samples in 12 discrete intervals between 0.059 and,
nominally, 100 mu m. The samples were analyzed for As, Ca, Mg, Se,
Sb, V, and Zn by instrumental neutron activation analysis and for S
by X-ray-fluorescence. Aerosol and deposition data for individual
elemental constituents were fit with a chemical mass balance
deposition (CMBD) model in which a set of particle-size-specific
deposition velocities (V-d), best reconciling the deposition data,
were determined by iterative (constrained) solution of a series of
six linear equations using the Levenberg-Marquardt method. Under
stable conditions and mean wind speed of 4.0 m s(-1), minimum V-d
values for particles with physical diameters between 0.09 and 0.53
mu m averaged 0.006 +/- 0.005 cm s(-1), wherein uncertainties were
determined by Monte Carlo analysis. This agrees favorably with
Values determined by microscopy for which uncertainties were much
larger and with those predicted by the Williams model for the same
period. The results suggest that physically significant V-d values
are obtainable from a constrained CMBD model.
C1 Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.
Carnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA
15213 USA.},
 bibtype = {article},
 author = {Caffrey, P F and Ondov, J M and Zufall, M J and Davidson, C I},
 journal = {Environ. Sci. Technol.}
}

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Size-segregated aerosol measurements were made over\nconsecutive 12-h periods with Micro-Orifice and Noll Rotary\nimpacters (MOI and NRI), and depositing-particulate collections to\naerodynamically smooth airfoils were made over periods of 3-4 days.\nThe combination of the MOI and NRI provided size-segregated\nparticulate samples in 12 discrete intervals between 0.059 and,\nnominally, 100 mu m. The samples were analyzed for As, Ca, Mg, Se,\nSb, V, and Zn by instrumental neutron activation analysis and for S\nby X-ray-fluorescence. Aerosol and deposition data for individual\nelemental constituents were fit with a chemical mass balance\ndeposition (CMBD) model in which a set of particle-size-specific\ndeposition velocities (V-d), best reconciling the deposition data,\nwere determined by iterative (constrained) solution of a series of\nsix linear equations using the Levenberg-Marquardt method. Under\nstable conditions and mean wind speed of 4.0 m s(-1), minimum V-d\nvalues for particles with physical diameters between 0.09 and 0.53\nmu m averaged 0.006 +/- 0.005 cm s(-1), wherein uncertainties were\ndetermined by Monte Carlo analysis. This agrees favorably with\nValues determined by microscopy for which uncertainties were much\nlarger and with those predicted by the Williams model for the same\nperiod. The results suggest that physically significant V-d values\nare obtainable from a constrained CMBD model.\nC1 Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.\nCarnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA\n15213 USA.","bibtype":"article","author":"Caffrey, P F and Ondov, J M and Zufall, M J and Davidson, C I","journal":"Environ. Sci. Technol.","bibtex":"@article{\n title = {Determination of size-dependent dry particle deposition velocities with multiple intrinsic elemental tracers},\n type = {article},\n year = {1998},\n pages = {1615-1622},\n volume = {32},\n id = {8d04e31c-c0be-3055-9171-4000fade2fcd},\n created = {2014-10-08T16:28:18.000Z},\n file_attached = {false},\n profile_id = {363623ef-1990-38f1-b354-f5cdaa6548b2},\n group_id = {02267cec-5558-3876-9cfc-78d056bad5b9},\n last_modified = {2017-03-14T17:32:24.802Z},\n read = {false},\n starred = {false},\n authored = {false},\n confirmed = {true},\n hidden = {false},\n citation_key = {Caffrey:EST:1998a},\n source_type = {article},\n private_publication = {false},\n abstract = {Dry deposition flux and aerosol size distribution\nmeasurements were made concurrently aboard the RV Lake Guardian 19\nkm east of the Chicago shoreline during summer 1994 to assess\natmospheric inputs of minor and trace elements to southern Lake\nMichigan. Size-segregated aerosol measurements were made over\nconsecutive 12-h periods with Micro-Orifice and Noll Rotary\nimpacters (MOI and NRI), and depositing-particulate collections to\naerodynamically smooth airfoils were made over periods of 3-4 days.\nThe combination of the MOI and NRI provided size-segregated\nparticulate samples in 12 discrete intervals between 0.059 and,\nnominally, 100 mu m. The samples were analyzed for As, Ca, Mg, Se,\nSb, V, and Zn by instrumental neutron activation analysis and for S\nby X-ray-fluorescence. Aerosol and deposition data for individual\nelemental constituents were fit with a chemical mass balance\ndeposition (CMBD) model in which a set of particle-size-specific\ndeposition velocities (V-d), best reconciling the deposition data,\nwere determined by iterative (constrained) solution of a series of\nsix linear equations using the Levenberg-Marquardt method. Under\nstable conditions and mean wind speed of 4.0 m s(-1), minimum V-d\nvalues for particles with physical diameters between 0.09 and 0.53\nmu m averaged 0.006 +/- 0.005 cm s(-1), wherein uncertainties were\ndetermined by Monte Carlo analysis. This agrees favorably with\nValues determined by microscopy for which uncertainties were much\nlarger and with those predicted by the Williams model for the same\nperiod. The results suggest that physically significant V-d values\nare obtainable from a constrained CMBD model.\nC1 Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA.\nCarnegie Mellon Univ, Dept Civil & Environm Engn, Pittsburgh, PA\n15213 USA.},\n bibtype = {article},\n author = {Caffrey, P F and Ondov, J M and Zufall, M J and Davidson, C I},\n journal = {Environ. Sci. Technol.}\n}","author_short":["Caffrey, P., F.","Ondov, J., M.","Zufall, M., J.","Davidson, C., I."],"bibbaseid":"caffrey-ondov-zufall-davidson-determinationofsizedependentdryparticledepositionvelocitieswithmultipleintrinsicelementaltracers-1998","role":"author","urls":{},"downloads":0},"bibtype":"article","biburl":null,"creationDate":"2014-09-11T15:28:59.320Z","downloads":0,"keywords":[],"search_terms":["determination","size","dependent","dry","particle","deposition","velocities","multiple","intrinsic","elemental","tracers","caffrey","ondov","zufall","davidson"],"title":"Determination of size-dependent dry particle deposition velocities with multiple intrinsic elemental tracers","year":1998}