[Pollution level and chemical speciation of heavy metals in PM2.5 during autumn in Guangzhou city].
Huan Jing Ke Xue. 2008 Mar; 29(3):569-75.HJ

Abstract

PM2.5 samples were collected in Guangzhou city during autumn. Total concentration and chemical speciation of 10 heavy metals in PM2.5 were quantified by acid digestion method and sequential extraction procedure. The pollution level and bioavailability of these metals were also evaluated. Results showed that PM2.5 and heavy metal concentration were significantly high in Guangzhou city. Ranged from 0.0833 to 0.1900 mg m(-3), PM2.5 levels in the region were much higher than outdoor PM2.5 standard recommended by US-EPA. High enrichment factor values (K > 10) were obtained for Cd, Pb, Zn, Cu and Mo, reflecting the importance of anthropogenic inputs. In contrast, K values of Ni, Mn, Co and Fe were among 1 to 10, suggested that they were mainly from natural sources except for human activities. According to the results of chemical speciation analysis, more than 80% of Al and Fe were found bound to organic matter, oxidisable and sulphidic fraction, and residual fraction. Meanwhile, most of Zn, Pb, Cd and Cu were distributed in soluble and exchangeable fraction and carbonate, oxide and reducible fraction. Bioavailable coefficients (k) revealed that the order of comparative mobility and bioavailability of heavy metals is: Cd > Zn > Pb > Cu> Mn> Mo> Co> Ni> Fe> Al. With k > 0.8, Cd, Zn and Pb were classified as bioavailable elements, while Cu, Mn, Mo, Co and Ni (k approximately equal 0.5) were remarked as potential bioavailable elements, and Fe and Al (k <0.2) as non-available elements.

Authors+Show Affiliations

Feng XD

School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, China. fxd994@163.com

Dang Z

No affiliation info available

Huang WL

No affiliation info available

MeSH

Air PollutantsChinaEnvironmental MonitoringMetals, HeavyParticle SizeParticulate MatterSeasons

Pub Type(s)

English Abstract

Journal Article

Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

18649509

Citation

Feng, Xi-Dan, et al. "[Pollution Level and Chemical Speciation of Heavy Metals in PM2.5 During Autumn in Guangzhou City]." Huan Jing Ke Xue= Huanjing Kexue, vol. 29, no. 3, 2008, pp. 569-75.

Feng XD, Dang Z, Huang WL. [Pollution level and chemical speciation of heavy metals in PM2.5 during autumn in Guangzhou city]. Huan Jing Ke Xue. 2008;29(3):569-75.

Feng, X. D., Dang, Z., & Huang, W. L. (2008). [Pollution level and chemical speciation of heavy metals in PM2.5 during autumn in Guangzhou city]. Huan Jing Ke Xue= Huanjing Kexue, 29(3), 569-75.

Feng XD, Dang Z, Huang WL. [Pollution Level and Chemical Speciation of Heavy Metals in PM2.5 During Autumn in Guangzhou City]. Huan Jing Ke Xue. 2008;29(3):569-75. PubMed PMID: 18649509.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - [Pollution level and chemical speciation of heavy metals in PM2.5 during autumn in Guangzhou city]. AU - Feng,Xi-Dan, AU - Dang,Zhi, AU - Huang,Wei-Lin, PY - 2008/7/25/pubmed PY - 2009/1/13/medline PY - 2008/7/25/entrez SP - 569 EP - 75 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 29 IS - 3 N2 - PM2.5 samples were collected in Guangzhou city during autumn. Total concentration and chemical speciation of 10 heavy metals in PM2.5 were quantified by acid digestion method and sequential extraction procedure. The pollution level and bioavailability of these metals were also evaluated. Results showed that PM2.5 and heavy metal concentration were significantly high in Guangzhou city. Ranged from 0.0833 to 0.1900 mg m(-3), PM2.5 levels in the region were much higher than outdoor PM2.5 standard recommended by US-EPA. High enrichment factor values (K > 10) were obtained for Cd, Pb, Zn, Cu and Mo, reflecting the importance of anthropogenic inputs. In contrast, K values of Ni, Mn, Co and Fe were among 1 to 10, suggested that they were mainly from natural sources except for human activities. According to the results of chemical speciation analysis, more than 80% of Al and Fe were found bound to organic matter, oxidisable and sulphidic fraction, and residual fraction. Meanwhile, most of Zn, Pb, Cd and Cu were distributed in soluble and exchangeable fraction and carbonate, oxide and reducible fraction. Bioavailable coefficients (k) revealed that the order of comparative mobility and bioavailability of heavy metals is: Cd > Zn > Pb > Cu> Mn> Mo> Co> Ni> Fe> Al. With k > 0.8, Cd, Zn and Pb were classified as bioavailable elements, while Cu, Mn, Mo, Co and Ni (k approximately equal 0.5) were remarked as potential bioavailable elements, and Fe and Al (k <0.2) as non-available elements. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/18649509/[Pollution_level_and_chemical_speciation_of_heavy_metals_in_PM2_5_during_autumn_in_Guangzhou_city]_ L2 - https://antibodies.cancer.gov/detail/CPTC-TIMP1-2 DB - PRIME DP - Unbound Medicine ER -

Tags

[Pollution level and chemical speciation of heavy metals in PM2.5 during autumn in Guangzhou city].Huan Jing Ke Xue. 2008 Mar; 29(3):569-75.HJ