Effect of Mineral and Organic Soil Constituents on Microbial Mineralization of Organic Compounds in a Natural Soil

Knaebel, David B.; Federle, Thomas W.; McAvoy, Drew C.; Vestal, J. Robie

doi:10.1128/aem.60.12.4500-4508.1994

Cited by 77 publications

(44 citation statements)

References 43 publications

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“…Montmorillonite SWy-1, kaolinite, and illite were purchased from the Clay Mineral Society, University of Missouri, Columbia, Missouri, USA. Sea sand was collected near Daytona Beach, Florida, USA, and combusted as previously described [7]. Humic acids (HAs) were purchased from Aldrich Chemical Company, Milwaukee, Wisconsin, USA.…”

Section: Soil and Soil Constituentsmentioning

confidence: 99%

“…Dodecyl linear alcohol ethoxylate, LAS, STAC, C 12 TMAC, and sodium stearate were aseptically bound to the montmorillonite, kaolinite, illite, sand, HAs, and FAs as described previously [7]. Briefly, the 14 C-labeled chemicals (0.145 mg) were combined with 4.0 g of the soil constituents in an excess of ethanol or methanol.…”

Section: Sorption Of Chemicals To Soil Constituentsmentioning

confidence: 99%

“…Mineralization of the chemical-soil constituent complexes was performed as previously described [7]. Briefly, 0.10 g of the soil constituent-chemical complex was added to 8.0 g (dry weight) of the soil in 50-ml serum bottles.…”

Section: Mineralization Assaysmentioning

confidence: 99%

“…This additional set of observations allowed us to compare and interpret the data further, since the soils used were chemically and physically different. Therefore, this study is an expansion of the earlier work [7] and provides a broader perspective of the behavior of organic chemicals in different soil types.…”

Section: Introductionmentioning

confidence: 96%

“…We could then compare the differences between the chemicals and the different environmental forms to determine what factors (chemical or soil) are important in determining the fate of molecules in soil environments. Furthermore, since we previously examined the fate of some of these chemical-soil constituent complexes in a natural woodlot soil [7], we evaluated the effects of soil type on the fate of these complexed chemicals. This additional set of observations allowed us to compare and interpret the data further, since the soils used were chemically and physically different.…”

Section: Introductionmentioning

confidence: 99%

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Microbial Mineralization of Organic Compounds in an Acidic Agricultural Soil: Effects of Preadsorption to Various Soil Constituents

Knaebel¹,

Federle²,

McAvoy³

et al. 1996

Environ Toxicol Chem

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This study investigated the interactions between organic chemicals and components of the soil matrix and their effects on subsequent microbial mineralization kinetics. Five 14 C-labeled chemicals (anionic, cationic, and nonionic surfactants) were aseptically sorbed to montmorillonite, kaolinite, illite, sand, humic acids, and fulvic acids. Small amounts of these sorbed chemicals were dosed to an acidic, sludge-amended agricultural soil (Rossmoyne) to a final added chemical concentration of 50 ng g Ϫ1 . Controls received the same final added concentration of the chemicals in water. The ratio of sorbed chemical to soil was kept low to minimize changes to the soil mineralogy, chemistry, and microbiology. Microbial mineralization of the chemicals to 14 CO 2 was measured over a period of 60 to 70 d, and the data were fitted to first-order and 3/2-order mineralization models. Association with the soil constituents inhibited the mineralization of the chemicals in the following rank (from least to greatest effect): controls ഠ sand Ͻ kaolinite Ͻ illite Ͻ montmorillonite ഠ humic acids Ͻ fulvic acids. These experiments demonstrated that interactions with some soil constituents (kaolinite, illite, and sand) had little effect on the microbial metabolism of these chemicals, while montmorillonite, humic acids, and especially fulvic acids significantly decreased the bioavailability of the chemicals to the microbial community. The first group of soil constituents had little influence on the mineralization kinetic parameters, whereas the latter significantly reduced at least one of the parameter estimates. The parent soil, possibly via interactions with its mineral surfaces, also had effects on the degradation of the chemicals, since soil microbial biomass and physiological activity were not correlated with any of the mineralization kinetic parameter estimates. These experiments demonstrate that the environmental form of a chemical has a significant influence on its eventual microbial metabolism and is an important parameter to consider when investigating the fate of chemicals in soil environments.

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Section: Soil and Soil Constituentsmentioning

confidence: 99%

Section: Sorption Of Chemicals To Soil Constituentsmentioning

confidence: 99%

Section: Mineralization Assaysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microbial Mineralization of Organic Compounds in an Acidic Agricultural Soil: Effects of Preadsorption to Various Soil Constituents

Knaebel¹,

Federle²,

McAvoy³

et al. 1996

Environ Toxicol Chem

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Kinetics of Microbial Processes and Population Growth in Soil

Lipson

Schmidt

2003

Encyclopedia of Environmental Microbiology

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Kinetics of Microbial Processes and Population Growth in Soil

Lipson

Schmidt

2002

Encyclopedia of Agrochemicals

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The kinetics of microbial growth and substrate utilization in liquid culture have been worked out in great detail. However, it has become acknowledged that kinetics in soil are greatly affected by the complex physical environment of soils. Much progress has been made toward incorporating soil physical effects into the current understanding of the kinetics of microbial processes in soil. The review synthesizes new and classic work on the physical and biological factors that affect kinetics in soil.

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Effect of Mineral and Organic Soil Constituents on Microbial Mineralization of Organic Compounds in a Natural Soil

Cited by 77 publications

References 43 publications

Microbial Mineralization of Organic Compounds in an Acidic Agricultural Soil: Effects of Preadsorption to Various Soil Constituents

Microbial Mineralization of Organic Compounds in an Acidic Agricultural Soil: Effects of Preadsorption to Various Soil Constituents

Kinetics of Microbial Processes and Population Growth in Soil

Kinetics of Microbial Processes and Population Growth in Soil

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