Advances in Agronomy by Donald L. Sparks
By Donald L. Sparks
Advances in Agronomy is still well-known as a number one reference and a main resource for the newest learn in agronomy. As consistently, the themes lined are diverse and exemplary of the myriad of subject material handled by way of this long-running serial. * continues the top impression issue between serial courses in agriculture * offers well timed reports on very important agronomy matters * Enjoys a long-standing popularity for excellence within the box
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2001a). Chemical immobilization of lead, zinc, and cadmium in smelter-contaminated soils using biosolids and rock phosphate. J. Environ. Qual. 30, 1222–1230. Basta, N. , Rodriguez, R. , and Casteel, S. W. (1989). Development of chemical methods to assess the bioavailability of arsenic in contaminated media. S. epa. abstractDetail/abstract/676/report/FEPA Grant Number R825410. Final Report. 40pp. Basta, N. , Foster, J. , Dayton, E. , Rodriguez, R. , and Casteel, S. W. (2007a). The effect of dosing vehicle on arsenic bioaccessibility in smelter-contaminated soils.
Thus, RBA adjustments are needed for moderately contaminated soils. Cleanup of many sites are often considered at <50 mg kgÀ 1 soil As. It may not be possible to obtain RBA values for As using animal models for some moderately contaminated soils that contain <200 mg kg-1 As. Arsenic in urine or blood, used to determine RBA from animal diets in dosing studies may determine the soil As detection limit. A strong advantage of IVG methods is the ability to estimate RBA at very low soil As concentrations including background levels of <10 mg kgÀ 1 As.
ICCVAM’s validation criteria for test methods include inter- and intralaboratory round robin studies. To our knowledge, round robin studies of IVG methods for As have not been conducted in the United States. Round robin studies should be limited to IVG methods that have been shown to be well correlated with bioavailable As from animal dosing trials. 3. , 1999). 9% with 38 Kirk G. Scheckel et al. 91** 50 40 30 20 10 0 0 10 20 30 % Relative bioaccessible, in vitro % Relative bioavailable as, in vivo 40 Figure 6 In vivo RBA As versus OSU IVG relative bioaccessible As.