Laboratory versus field soil aging: Impact on DDE bioavailability and sorption

Škulcová, Lucia; Hale, Sarah E.; Hofman, Jakub; Bielská, Lucie

doi:10.1016/j.chemosphere.2017.07.159

Cited by 9 publications

(2 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A contaminant aging effect is usually demonstrated by incubating soil or sediment samples after chemical treatment under controlled conditions. − In such simulated aging studies, various time intervals, ranging from one month to two years, have been employed. − It is unrealistic to carry out experiments at time scales close to that experienced for POPs in the real environment. Additionally, it is nearly impossible to duplicate field aging processes in a laboratory setting, and such variables may include microbial activities, biological perturbations, and variations in temperature, pH, redox, and lighting intensity, among others. − Thus, a direct approach to estimating the effects of aging on bioavailability for legacy contaminants such as POPs in solid matrices is highly valuable.…”

Section: Introductionmentioning

confidence: 99%

A Direct Method for Quantifying the Effects of Aging on the Bioavailability of Legacy Contaminants in Soil and Sediment

Wang

Schlenk

Gan

2019

Environ. Sci. Technol. Lett.

View full text Add to dashboard Cite

A majority of persistent organic pollutants (POPs) that we see today have in fact undergone extensive aging in the environment, as their use was discontinued several decades ago. While contaminant aging is commonly believed to lead to reduced bioavailability, at present there is not a direct method for quantitatively determining the effect of aging. Here we propose a method based on the addition of isotope-labeled reference compounds to field-collected soil or sediment and comparison of the bioavailability between aged POPs and their freshly added isotope-labeled counterparts. We demonstrated this method using bioaccumulation by invertebrates and 24 h Tenax desorption as bioavailability end points. Compared to the freshly added isotope-labeled references, biota-to-soil/sediment accumulation factors (BSAFs) of native (aged) DDTs (p,p′-DDD, p,p′-DDE, and p,p′-DDT) and PCBs (PCB52 and PCB70) were consistently smaller, indicating that aging decreased their bioaccumulation potential. For two aged soil samples from Florida, BSAFs for earthworm (Eisenia fetida) decreased by 29.3–62.8% for DDT derivatives and 18.3–34.4% for the PCBs. In aged marine and lake sediments from California, BSAFs for indicator invertebrates (Nereis virens and Lumbriculus variegatus) decreased by 19.4–67.5% for DDTs and 12.0–46.9% for the two PCBs. Similar reductions were also observed when the same samples were analyzed using 24 h Tenax desorption. Given that mass spectrometry is widely available, a simple method based on the addition of isotope-labeled analogues may be easily adopted and will be of great value for quantifying aging effects to refine risk estimates of contaminated soil and sediment sites, including the need for remediation intervention.

show abstract

Section: Introductionmentioning

confidence: 99%

A Direct Method for Quantifying the Effects of Aging on the Bioavailability of Legacy Contaminants in Soil and Sediment

Wang

Schlenk

Gan

2019

Environ. Sci. Technol. Lett.

View full text Add to dashboard Cite

show abstract

“…As for commercial fibers, their use in soil analysis still has many potentials and they have been used not only in method development for new harmful contaminants [100][101][102] but rather as an analytical tool to carry out other studies, principally with ecological-environmental purposes. Indeed, given its analytical features, SPME allows for the determination of analyte free concentration and for this reason it has been used in bioavailability [103], bio-accessibility [104], and soil sorption studies involving the binding potential of dissolved organic matter (DOM) and the effects of bioremediation on contaminated industrial and agricultural soils [105,106].…”

Section: Soilmentioning

confidence: 99%

Recent Applications and Newly Developed Strategies of Solid-Phase Microextraction in Contaminant Analysis: Through the Environment to Humans

Naccarato

Tagarelli

2019

Separations

View full text Add to dashboard Cite

The present review aims to describe the recent and most impactful applications in pollutant analysis using solid-phase microextraction (SPME) technology in environmental, food, and bio-clinical analysis. The covered papers were published in the last 5 years (2014–2019) thus providing the reader with information about the current state-of-the-art and the future potential directions of the research in pollutant monitoring using SPME. To this end, we revised the studies focused on the investigation of persistent organic pollutants (POPs), pesticides, and emerging pollutants (EPs) including personal care products (PPCPs), in different environmental, food, and bio-clinical matrices. We especially emphasized the role that SPME is having in contaminant surveys following the path that goes from the environment to humans passing through the food web. Besides, this review covers the last technological developments encompassing the use of novel extraction coatings (e.g., metal-organic frameworks, covalent organic frameworks, PDMS-overcoated fiber), geometries (e.g., Arrow-SPME, multiple monolithic fiber-SPME), approaches (e.g., vacuum and cold fiber SPME), and on-site devices. The applications of SPME hyphenated with ambient mass spectrometry have also been described.

show abstract

A miniaturized method for fast, simple, and sensitive pesticide analysis in soils

et al. 2021

View full text Add to dashboard Cite

Purpose Organochlorine pesticides (OCPs) like lindane and DDT have been used extensively after World War II until the 1990s. Still, residues of these pesticides can be found in agricultural soils all over the world, especially in developing countries. Often, they occur in extensive areas and elevated concentrations so that food safety is jeopardized. Hence, simple, cheap, and fast analytical methods are needed for a straight-forward assessment of risks. A miniaturized solid–liquid extraction combined with solid-phase microextraction (SPME) based on a proven ISO method is presented. Methods The performance of the method is evaluated by extracting three different soils which were spiked with HCH and DDT congeners, and trifluralin, and aged for 35 days. The results are compared with those of a modified quick, easy, cheap, efficient, rugged, and safe (QuEChERS) method. For further validation, both methods are applied to three environmental soil samples. Results Validation results show limits of detection and quantification as well as recovery rates in good agreement with standard requirements. The new method was found to be quicker than QuEChERS, which requires time-consuming preparation of reagents. Conclusion Merits include low time and sample volume requirements (0.5 g) and the possibility to extract many samples simultaneously, which allows the screening of large sample sizes to determine the pollution status of whole landscape regions. However, access to an automated SPME apparatus is assumed. The authors can recommend this method as a cheap and fast alternative where SPME is available.

show abstract

Laboratory versus field soil aging: Impact on DDE bioavailability and sorption

Cited by 9 publications

References 63 publications

A Direct Method for Quantifying the Effects of Aging on the Bioavailability of Legacy Contaminants in Soil and Sediment

A Direct Method for Quantifying the Effects of Aging on the Bioavailability of Legacy Contaminants in Soil and Sediment

Recent Applications and Newly Developed Strategies of Solid-Phase Microextraction in Contaminant Analysis: Through the Environment to Humans

A miniaturized method for fast, simple, and sensitive pesticide analysis in soils

Contact Info

Product

Resources

About