This file presents physicochemical properties of soils, house dusts, PCBs, and the bioaccessibility values calculated from the analysis of PCBs in the soils, house dusts, and synthetic digestive fluids. Bioaccessibility values were calculated using the ratio of the analyte in the sediment relative to that in the digestive fluids. The first tab in the excel spreadsheet is the data dictionary and contains the meta data (column headings and fields). The second tab contains the soil/dust/PCB physicochemical properties and the associated bioaccessibility values. This dataset is associated with the following publication: Shen, H., W. Li, S. Graham, and J. Starr. The role of soil and house dust physicochemical properties in determining the post ingestion bioaccessibility of sorbed polychlorinated biphenyls. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 217: 1-8, (2019).

post ingestion bioaccessibility data for pesticides. This dataset is associated with the following publication: Parker, B., E. Valentini, S. Graham, and J. Starr. In vitro modeling of the post-ingestion bioaccessibility of per- and polyfluoroalkyl substances sorbed to soil and house dust. TOXICOLOGICAL SCIENCES. Society of Toxicology, RESTON, VA, 197(1): 95-103, (2024).

Bioaccessibility values for fipronil determined using 37 paired soil and dust samples. Values for the physicochemical properties of the soils and dusts used to model the bioaccessibility data. This dataset is associated with the following publication: Starr , J., W. Li, S. Graham , K. Bradham , D. Stout , A. Williams , and J. Sylva. Using paired soil and house dust samples in an in vitro assay to assess the post ingestion bioaccessibility of sorbed fipronil. JOURNAL OF HAZARDOUS MATERIALS. Elsevier Science Ltd, New York, NY, USA, 312: 141-149, (2016).

SRM 2585 Organic Contaminants in House Dust - This Standard Reference Material (SRM) is intended for use in evaluating analytical methods for the determination of selected polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyl (PCB) congeners, chlorinated pesticides, and polybrominated diphenyl ether (PBDE) congeners in house dust and similar matrices. All of the constituents for which certified, reference, and information values are provided in SRM 2585 were naturally present in the dust material before processing. A unit of SRM 2585 consists of one bottle containing approximately 10 g of house dust. This data is public in the Certificate of Analysis for this material.

The data presented in this data file is a product of a journal publication. The dataset contains PCB sorption concentrations to settled dust due to dust/air partition and PCB migration concentration due to dust/source partitioning. This dataset is associated with the following publication: Liu , X., Z. Guo, K. Krebs , D. Greenwell , N. Roache, A. Stinson, J. Nardin, and R. Pope. Laboratory study of PCB transport from primary sources to settled dust. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 169: 62-69, (2016).

Bioaccessibility dat for PCBs and food types. This dataset is associated with the following publication: Starr, J., W. Li, S. Graham, H. Shen, and F. Waldron. Is food type important for in vitro post ingestion bioaccessibility models of polychlorinated biphenyls sorbed to soil. SCIENCE OF THE TOTAL ENVIRONMENT. Elsevier BV, AMSTERDAM, NETHERLANDS, 704: 135421, (2020).

Biochars with a high affinity for phosphorus (P) are promising soil amendments for reducing P in agricultural runoff. Poultry litter (PL) is an abundant biochar feedstock. However, PL-derived biochars are typically high in soluble P and therefore require chemical modification to become effective P sorbents. This study investigated the effect of magnesium (Mg) activation on extractable P (EP) and P sorption capacities of PL-derived biochars. Biochar was produced at 500–900 °C from PL activated with 0–1 M Mg. Three differentially aged PL feedstocks were evaluated (1-, 3–5-, and 7–9-year-old) has context menu. This dataset is associated with the following publication: Padilla, J.T., D. Watts, J. Novak, V. Cerven, J. Ippolito, A.A. Szogi, and M. Johnson. Magnesium activation affects the properties and phosphate sorption capacity of poultry litter biochar. Biochar. Springer Nature, New York, NY, USA, 5: 64, (2023).

Biochars with a high affinity for phosphorus (P) are promising soil amendments for reducing P in agricultural runoff. Poultry litter (PL) is an abundant biochar feedstock. However, PL-derived biochars are typically high in soluble P and therefore require chemical modification to become effective P sorbents. This study investigated the effect of magnesium (Mg) activation on extractable P (EP) and P sorption capacities of PL-derived biochars. Biochar was produced at 500–900 °C from PL activated with 0–1 M Mg. Three differentially aged PL feedstocks were evaluated (1-, 3–5-, and 7–9-year-old) has context menu. This dataset is associated with the following publication: Padilla, J.T., D. Watts, J. Novak, V. Cerven, J. Ippolito, A.A. Szogi, and M. Johnson. Magnesium activation affects the properties and phosphate sorption capacity of poultry litter biochar. Biochar. Springer Nature, New York, NY, USA, 5: 64, (2023).

,Biochars are charcoals used as soil amendments, and they have many beneficial effects on soil health. However, one negative effect is biochars often reduce concentrations of soil nitrogen that are available to plants. This is believed to be due to the high carbon and low nitrogen contents of biochars, which deprive soil microbes of nitrogen as they decompose the biochar, and cause microbes to tie up nitrogen from soil. We tested whether we could predict biochar impacts on soil nitrogen from the quantities of carbon and nitrogen in biochar that can be consumed soil microbes. Because biochars are mostly composed of carbon in molecules that can not be consumed by microbes, the microbially-available portion is generally small. We measured the microbially-available carbon and nitrogen in ten biochars, and measured how they impacted nitrogen concentrations in two soils from Oregon.,This dataset includes characteristics of ten biochars and two soils, and measurements from two incubation experiments. In the first experiment we incubated 13C-labeled biochars with two soil for 101 days, and measured production of biochar- and soil-respired CO2 and soil dissolved inorganic nitrogen. In the second experiment we expanded to study ten biochar types, including seven biochars that were not isotopically-labeled. We measured how much dissolved inorganic nitrogen was produced by amended soils over 28 days.,Surprisingly, we found all ten biochars increased rather than decreased soil nitrogen concentrations one month after application. We also found that biochars produced at high temperatures, which were more difficult for soil microbes to consume than low-temperature biochars, stimulated more soil decomposition and released more soil nitrogen. It appeared that microbes increased soil decomposition in response to additions of biochar, and this then increased plant-available nitrogen at least temporarily. These unexpected results show that biochar can sometimes have beneficial impacts on soil nitrogen, and that biochar impacts cannot be readily predicted from the qualities of the biochars themselves. These results are relevant to biochar users, and to biochar producers interested in how to make biochars more beneficial for plant growth. These results indicate that biochar users cannot predict nitrogen impacts, and should therefore monitor soil nitrogen concentrations to ensure levels are sufficient for plant growth.,,

Data describes the impact of biochar amendments on soil lead bioaccessibility. It contains the raw soil bioaccessibility information. This dataset is associated with the following publication: Plunkett, S., C. Eckley, T. Luxton, and M. Johnson. The effects of biochar and redox conditions on soil Pb bioaccessibility to people and waterfowl. CHEMOSPHERE. Elsevier Science Ltd, New York, NY, USA, 294: 133675, (2022).