How to establish detection limits for environmental microplastics analysis

Article Environmental Sciences

Microplastics in agricultural drainage water: A link between terrestrial and aquatic microplastic pollution

Moritz Bigalke et al.

Summary: The study found significant concentrations of microplastics in drainage water from agricultural soils in Switzerland, mainly composed of PA and PE. The size distribution of microplastics showed an exponential increase with decreasing particle size. The leaching of microplastics from soil in heavily drained areas globally could be a significant source of microplastics to aquatic ecosystems.

SCIENCE OF THE TOTAL ENVIRONMENT (2022)

添加到收藏夹

Article Environmental Sciences

Monitoring microplastics in drinking water: An interlaboratory study to inform effective methods for quantifying and characterizing microplastics

Hannah De Frond et al.

Summary: California Senate Bill 1422 requires the development of State-approved standardized methods for quantifying and characterizing microplastics in drinking water. A study was conducted involving 22 laboratories from six countries to evaluate widely used methods for microplastic analysis. The study found that FTIR and Raman spectroscopy were effective in identifying microplastics by polymer type, and participants demonstrated good recovery and chemical identification for particles larger than 50 μm.

CHEMOSPHERE (2022)

添加到收藏夹

Article Engineering, Environmental

Bottom-Up Evaluation of the Uncertainty of the Quantification of Microplastics Contamination in Sediment Samples

Vanessa Morgado et al.

Summary: This study provides a detailed evaluation of the uncertainty in quantifying microplastic contamination in sediments. By modeling the systematic and random effects and combining different sources of uncertainty, an objective assessment of environmental contamination can be achieved.

ENVIRONMENTAL SCIENCE & TECHNOLOGY (2022)

添加到收藏夹

Article Environmental Sciences

Quantitative assessment of visual microscopy as a tool for microplastic research: Recommendations for improving methods and reporting

Syd Kotar et al.

Summary: Microscopy is an important step in microplastic analysis as it provides valuable information on count, size, color, and morphology. A method evaluation study involving multiple laboratories showed that recovery rates varied based on particle morphology and color, with fibers having the poorest recovery and clear/white particles having larger deviations. More experienced laboratories tended to report higher concentrations with higher variance among replicates. Training and improvements in color and morphology keys can enhance accuracy and precision of microscopy for microplastics.

CHEMOSPHERE (2022)

添加到收藏夹

Article Environmental Sciences

Nationwide monitoring of microplastics in bivalves from the coastal environment of Korea

Youna Cho et al.

Summary: Bivalves serve as useful bioindicators of microplastic contamination in the marine environment, with microplastics widely distributed in both coastal bivalves and waters. Despite the lack of significant relationship in the abundance of microplastics, their dominant features such as size, shape, color and polymer type were similar between bivalves and seawater. The study suggests that microplastic contamination is widespread in the Korean coastal environment, with bivalves reflecting the microplastic pollution characteristics of the surrounding waters.

ENVIRONMENTAL POLLUTION (2021)

添加到收藏夹

Article Chemistry, Analytical

Comparison of detection limits estimated using single- and multi-concentration spike-based and blank-based procedures

William T. Foreman et al.

Summary: The study compared spike- and blank-based methods for estimating detection limits in water samples, finding that blank-based detection limits estimated using large numbers of blank samples provided results closer to the desired risk level. For organic methods, spike-based methods are needed to simulate blank distribution and estimate detection limits.

TALANTA (2021)

添加到收藏夹

Article Multidisciplinary Sciences

Determination of X-ray detection limit and applications in perovskite X-ray detectors

Lei Pan et al.

Summary: In this study, a new statistical model is proposed to determine the detection limit of X-ray detectors by measuring dark current and photocurrent. The authors found that in addition to material quality, device architecture and working mode also have a significant influence on sensitivity and detection limit.

NATURE COMMUNICATIONS (2021)

添加到收藏夹

Article Instruments & Instrumentation