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pro vyhledávání: '"Donald S. Gamble"'
Autor:
Donald S. Gamble
Publikováno v:
Agriculture, Vol 7, Iss 11, p 91 (2017)
Soils are the ultimate examples of physically and chemically irregular mixtures. They are also dynamic. Early investigators consequently did not understand the physical chemistry of pesticides in soil and water. By taking shortcuts instead of trying
Externí odkaz:
https://doaj.org/article/482e372c5a064af48e0ee261ec51394b
Autor:
Donald S. Gamble
Publikováno v:
Current Opinion in Environmental Science & Health. 4:16-18
Government regulators of agricultural pesticides use multidisciplinary computer models with which they make product licencing decisions. Hydrology engineering and chemistry components are integrated into the multidisciplinary models. Although the sci
Autor:
Donald S. Gamble, Aldo G. Bruccoleri
Publikováno v:
Journal of Environmental Science and Health, Part B. 51:571-577
Two categories of pesticide soil models now exist. Government regulatory agencies use pesticide fate and transport hydrology models, including versions of PRZM.gw. They have good descriptions of pesticide transport by water flow. Their descriptions o
A Quantitative LC-MS/MS Study of the Partitioning, Transport, and Fate of Pesticide Residues on Soil
Autor:
Heather A. Gamble, Donald S. Gamble
Publikováno v:
Journal of Environmental Protection. :331-340
Titration of pesticides onto sorption sites can determine sorption capacities on soils. Previous studies have tracked the sorption capacities and detailed kinetics of the uptake of atrazine and its decomposition byproduct hydroxyatrazine on different
Publikováno v:
The Journal of Physical Chemistry C. 114:20055-20061
How to predict the persistence and leaching of organic chemicals in soils is a long-standing environmental issue. The injection of soil slurries into an HPLC together with separate solution-phase analysis permits the resolution of total sorption into
Autor:
and Aldo G. Bruccoleri, Cooper H. Langford, Donald S. Gamble, Gregory A. Leyes, Elspeth Lindsay
Publikováno v:
Environmental Science & Technology. 35:2375-2380
Quartz sandy soils from Simcoe, Ontario, Canada and North Carolina had sorption properties for chlorothalonil that were nearly the same. For labile surface sorption kinetics, the Simcoe soil gave a pseudo first-order rate constant of kS1 = (7.4 +/- 0
Publikováno v:
Environmental Science & Technology. 34:125-129
Chlorothalonil has been found to persist but not leach in some quartz sandy soils. For this effect to be understood, it is necessary for the numbers of occupied and empty surface sorption sites to be known. This requires that the labile surface sorpt
Autor:
William D. Reynolds, Roberto S. Clemente, Cooper H. Langford, Farhad Salehi, Ward Smith, Jinhe Li, Edward Topp, Donald S. Gamble, Shiv O. Prasher
Publikováno v:
Journal of Irrigation and Drainage Engineering. 125:212-222
The sorption behavior of atrazine (2-chloro-4-ethylamino-6-isopropylamino-s-triazine), a commonly used herbicide for corn, on intact soil columns was studied by incorporating a new two-stage sorption mechanism into PESTFADE, a pesticide fate and tran
Publikováno v:
Journal of Agricultural and Food Chemistry. 45:3634-3641
The feasibility of determining the identities and kinetics behavior of three pesticides in carrot tissue slurries using a novel on-line HPLC microextraction was investigated. Linuron, methylparathion, and metolachlor were added to aqueous slurries of