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A mechanistic framework to quantify sampling uncertainty of soil microplastics: integrating spatial heterogeneity and subsampling effects
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DOI：10.1016/j.envpol.2026.128895.png)
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Abstract
En 中文
• Field patchiness and laboratory subsampling jointly determine soil MP uncertainty. • Coarse MPs (≥500 μm) show high uncertainty under low abundance and patchy conditions. • Spatial patchiness and bulk density strongly increase sampling variability. • Gram-scale aliquots are often insufficient for robust quantification of coarse MPs.
Keywords:
Soil microplastics
Sampling uncertainty
Spatial heterogeneity
Poisson process
False negatives
Subsampling effects
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