| Title: | Does the Geographic Difference of Soil Properties Matter for Setting Up the Soil Screening Levels in Large Countries Like China? |
| Author(s): | Wang Y; Wang S; Jiang L; Ma L; Li X; Zhong M; Zhang W; |
| Address: | "National Engineering Research Centre of Urban Environmental Pollution Control, Beijing Key Laboratory for Risk Modeling and Remediation of Contaminated Sites, Beijing Municipal Research Institute of Eco-Environmental Protection, Beijing 100037, China" |
| ISSN/ISBN: | 1520-5851 (Electronic) 0013-936X (Linking) |
| Abstract: | "China issued the unified national soil screening levels (NSSLs) in 2018 to assist the regulation of contaminated sites, but the applicability of NSSLs was not thoroughly evaluated. Datasets from the National Qinghai-Tibet Plateau Scientific Data Center indicated great variability 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 (1.11-1.59 kg/m(3)). We analyzed the effects of soil properties on the derivation of SSLs by using Monte Carlo simulations. The soil factors mainly affected the inhalation exposure pathway of volatile organic compounds (VOCs). They had an effect of more than two orders of magnitude on SSLs for most selected VOCs, particularly with the parameters 0.35 > Henry's law constant > 0.1 and carbon-water distribution coefficient of >100. We compared NSSLs with the recommended SSLs assuming fifth percentile by using Monte Carlo simulations. In general, NSSLs were not sufficient to identify contaminated sites that require additional investigation in the south, central, and northwest regions but were too conservative in screening sites out that required no further action in the east and northeast regions. Our framework and findings may contribute to more scientific and effective soil quality management in other large countries" |
| Keywords: | Carbon China Research *Soil *Volatile Organic Compounds Water inhalation exposure soil screening level soil water content volatile organic compounds; |
| Notes: | "MedlineWang, Yang Wang, Shijie Jiang, Lin Ma, Lin Li, Xiaoyan Zhong, Maosheng Zhang, Wenyu eng Research Support, Non-U.S. Gov't 2022/04/21 Environ Sci Technol. 2022 May 3; 56(9):5684-5693. doi: 10.1021/acs.est.1c08771. Epub 2022 Apr 20" |
