Publicacións

@article{tan_integrated_2023,

title = {An integrated approach for quantifying source apportionment and source-oriented health risk of heavy metals in soils near an old industrial area},

author = {Chang Tan and Hao Wang and Qingchun Yang and Liyuan Yuan and Yuling Zhang and Jordi Delgado-Martín},

url = {https://www.sciencedirect.com/science/article/pii/S0269749123002737},

doi = {10.1016/j.envpol.2023.121271},

issn = {0269-7491},

year  = {2023},

date = {2023-04-01},

urldate = {2026-08-13},

journal = {Environmental Pollution},

volume = {323},

pages = {121271},

abstract = {Soil contamination of heavy metals (HMs) caused by the long-term industrial activities has become a major environmental issue due to its adverse effects on human health and ecosystem. In this paper, 50 soil samples were analyzed to evaluate the contamination characteristics, source apportionment and source-oriented health risk of HMs in soils near an old industrial area in NE China by applying an integrated approach of Pearson correlation analysis, Positive matrix factorization (PMF) model and Monte Carlo simulation. The results showed that the mean concentrations of all HMs greatly exceeded the soil background values (SBV), and the surface soils in the study area were heavily polluted with HMs, displaying a very high ecological risk. The toxic HMs emitted from the bullet production were identified as the primary source of HMs contamination in soils, with a contribution rate of 33.3%. The human health risk assessment (HHRA) suggested that the Hazard quotient (HQ) values of all HMs for children and adults are within the acceptable risk level (HQ < 1). The carcinogenic risk (CR) values of HMs for children and adults significantly exceeded the acceptable threshold of 1E-6 with a basic trend: As > Pb > Cr > Co > Ni, indicating a high cancer risk. For source-oriented health risk, the CR of four pollution sources for children and adults shows a same trend: Factor 4 > Factor 3 > Factor 2 > Factor 1. Among those, the source of HMs pollution from bullet production is the largest contributor to cancer risk, and As and Pb are the most important HMs pollutants that cause cancer risk to humans. The present study sheds some light on the contamination characteristics, source apportionment and source-health risk assessment of HMs in industrially contaminated soils, which helps improve the management of environmental risk control, prevention and remediation.},

keywords = {Heavy metals, Monte Carlo simulation, Positive matrix factorization model, Probabilistic health risk assessment, Soil contamination, Source apportionment},

pubstate = {published},

tppubtype = {article}

}

@article{yang_bioavailability_2022,

title = {Bioavailability and health risk of toxic heavy metals (As, Hg, Pb and Cd) in urban soils: A Monte Carlo simulation approach},

author = {Qingchun Yang and Liangmiao Zhang and Hualin Wang and Jordi Delgado-Martín},

url = {https://www.sciencedirect.com/science/article/pii/S0013935122010994},

doi = {10.1016/j.envres.2022.113772},

issn = {0013-9351},

year  = {2022},

date = {2022-11-01},

urldate = {2026-08-10},

journal = {Environmental Research},

volume = {214},

pages = {113772},

abstract = {Toxic heavy metals pollution in urban soil has become a major global issue due to its adverse effects on the environment and human health. In this paper, 26 soil samples were analyzed to assess the speciation, bioavailability and human health risk of Arsenic (As), Mercury (Hg), Lead (Pb) and Cadmium (Cd) in urban soils of a heavy industrial city in NE China by using a Monte Carlo simulation approach. The results showed that As, Hg, Pb and Cd concentrations in the soil all exceed the corresponding background value of study area. Mercury displays the highest value of geo-accumulation index (Igeo), followed by Cd, Pb and As. The pollution load index (PLI) value (>2) indicates a moderate pollution level in the study area. The chemical speciation of HMs mainly exists in residual fraction except Cd. The probabilistic health risk assessment demonstrated that the mean values of Total Carcinogenic Risk (TCR) and Hazard Index (HI) calculated with total concentration are at the unacceptable level, with a higher risk to children than adults. However, the mean values calculated with bioavailable fraction are all within the acceptable level. The mean value of TCR and HI obtained by bioavailable fraction is about 96% and 95% lower than that obtained by total concentration, respectively. Thus, this study suggested that the bioavailable fraction of HMs is a more reliable parameter for health risk assessment, while the total concentration of HMs can overestimate the true risk. The results of this study provide some insight into the speciation, bioavailability and health risks of toxic heavy metals in urban soils in those heavy industrial cities.},

keywords = {Bioavailable fraction, Monte Carlo simulation, Probabilistic health risk assessment, Toxic heavy metals, Urban soil},

pubstate = {published},

tppubtype = {article}

}