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首页> 外文期刊>Environmental Science & Technology: ES&T >Does the Geographic Difference of Soil Properties Matter for SettingUp the Soil Screening Levels in Large Countries Like China?
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Does the Geographic Difference of Soil Properties Matter for SettingUp the Soil Screening Levels in Large Countries Like China?

机译：Does the Geographic Difference of Soil Properties Matter for SettingUp the Soil Screening Levels in Large Countries Like China?

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摘要

China issued the unified national soil screening levels(NSSLs) in 2018 to assist the regulation of contaminated sites, but theapplicability of NSSLs was not thoroughly evaluated. Datasets from theNational Qinghai-Tibet Plateau Scientific Data Center indicated greatvariability of soil organic matter (0.8-173 g/kg), soil water content(0.05-0.6), soil porosity (0.4-0.6), and soil bulk density (1.11-1.59kg/m3). We analyzed the effects of soil properties on the derivation ofSSLs by using Monte Carlo simulations. The soil factors mainly affectedthe inhalation exposure pathway of volatile organic compounds(VOCs). They had an effect of more than two orders of magnitudeon SSLs for most selected VOCs, particularly with the parameters 0.35 > Henry's law constant > 0.1 and carbon-water distributioncoefficient of >100. We compared NSSLs with the recommended SSLs assumingfifth percentile by using Monte Carlo simulations.In general, NSSLs were not sufficient to identify contaminated sites that require additional investigation in the south, central, andnorthwest regions but were too conservative in screening sites out that required no further action in the east and northeast regions.Our framework andfindings may contribute to more scientific and effective soil quality management in other large countries.

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