Environmental Chemistry

ISSN 0254-6108

CN 11-1844/X

Vol. 38 No. 5
May  2019
Article Contents

Citation:

Assessment of heavy metal non-carcinogenic health risk in solidified fly ash using TTD and WOE methods

  • Received Date: 2018-06-20
    Fund Project:

    Supported by the Development Projects of New Technologies for Prevention and Control of Pollution in Guangzhou(PM-zx022-201507-027)

  • Traditional health risk assessment methods do not really reflect the heavy metals risk, because the interactions among heavy metals and their effects on target organs are not taken into account. To solve this problem, the traditional evaluation method was modified by the target organ toxicity dose (TTD) approach of ATSDR and the weight of evidence (WOE) approach of EPA. This study evaluated the non-carcinogenic health risks of heavy metals in solidified fly ash from a municipal solid waste incinerator in South China through the TTD and WOE methods, and the results were compared with that of the traditional method. The results showed that the Hazard Index (HI) values of the traditional health risk method was 0.2084, whereas the value of TTD modified HI and WOE modified HI was 0.5165 and 0.6717. The value of health risks by the TTD and WOE method were higher than that of the traditional method. It could reflect the factual health risk better for male workers in MSWI.
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  • [1] ZHANG M W, ZHANG S K, ZHANG Z Q, et al. Influence of a municipal solid waste incinerator on ambient air PCDD/F levels:A comparison of running and non-running periods[J]. Science of the total Environment, 2014, 491-492:34-41.
    [2] TANG Z W, HUANG Q F, YANG Y F. PCDD/Fs in fly ash from waste incineration in China:A need for effective risk management[J]. Environmental Science & Technology, 2013, 47(11):5520-5521.
    [3] KAKUTA Y, MATSUTO T, TOJO Y, et al. Characterization of residual carbon influencing on de novo synthesis of PCDD/Fs in MSWI fly ash[J]. Chemosphere, 2007, 68(5):880-886.
    [4] TIAN H Z, GAO J J, LU L, et al. Temporal trends and spatial variation characteristics of hazardous air pollutant emission inventory from municipal solid waste incineration in China[J]. Environmental Science & Technology, 2012, 46(18):10364-10371.
    [5] XIONG Z H L, MIN. HU, DA WEI. Physicochemical and solidification characteristics of municipal solid wastes incineration (MSWI) fly ash from Guangdong Province[J]. Environment Chemistry, 2007, 33(7):1173-1179.
    [6] LEUNG A O, DUZGOREN-AYDIN N S, CHEUNG K, et al. Heavy metals concentrations of surface dust from e-waste recycling and its human health implications in southeast China[J]. Environmental Science & Technology, 2008, 42(7):2674-2680.
    [7] SAMOVA S, PATEL C N, DOCTOR H, et al. The effect of bisphenol A on testicular steroidogenesis and its amelioration by quercetin:An in vivo and in silico approach[J]. Toxicology Research, 2018, 7(1):22-31.
    [8] SUN J, HU J, ZHU G Z, et al. PCDD/Fs distribution characteristics and health risk assessment in fly ash discharged from MSWIs in China[J]. Ecotoxicology and Environmental Safety, 2017, 139:83-88.
    [9] ZHOU J Z, WU S M, PAN Y, et al. Enrichment of heavy metals in fine particles of municipal solid waste incinerator (MSWI) fly ash and associated health risk[J]. Waste Management, 2015, 43:239-246.
    [10] US ATSDR. Guidance Manual for the Assessment of joint toxic action of chemical mixtures[EB/OL].[2018-7-1]. https://www.atsdr.cdc.gov/interactionprofiles/ipga.html.
    [11] US EPA. Supplementary guidance for conducting health risk assessment of chemical mixtures[EB/OL].[2018-7-1]. https://cfpub.epa.gov/ncea/risk/recordisplay.cfm?deid=20533.
    [12] WILBUR S B, HANSEN H, POHL H, et al. Using the ATSDR guidance manual for the Assessment of joint toxic action of chemical mixtures[J]. Environmental Toxicology and Pharmacology, 2004, 18(3):223-230.
    [13] CAO H B, CHEN J J, ZHANG J, et al. Heavy metals in rice and garden vegetables and their potential health risks to inhabitants in the vicinity of an industrial zone in Jiangsu, China[J]. Journal of Environmental Sciences, 2010, 22(11):1792-1799.
    [14] CAO H B, ZHU H Y, JIA Y J, et al. Heavy metals in food crops and the associated potential for combined health risk due to interactions between metals[J]. Human and Ecological Risk Assessment:An International Journal, 2011, 17(3):700-711.
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Assessment of heavy metal non-carcinogenic health risk in solidified fly ash using TTD and WOE methods

  • 1. South China Institute of Environmental Sciences, Ministry of Environmental Protection, Guangzhou, 510655, China;
  • 2. Hainan Research Academy of Environmental Sciences, Haikou, 570206, China
Fund Project:  Supported by the Development Projects of New Technologies for Prevention and Control of Pollution in Guangzhou(PM-zx022-201507-027)

Abstract: Traditional health risk assessment methods do not really reflect the heavy metals risk, because the interactions among heavy metals and their effects on target organs are not taken into account. To solve this problem, the traditional evaluation method was modified by the target organ toxicity dose (TTD) approach of ATSDR and the weight of evidence (WOE) approach of EPA. This study evaluated the non-carcinogenic health risks of heavy metals in solidified fly ash from a municipal solid waste incinerator in South China through the TTD and WOE methods, and the results were compared with that of the traditional method. The results showed that the Hazard Index (HI) values of the traditional health risk method was 0.2084, whereas the value of TTD modified HI and WOE modified HI was 0.5165 and 0.6717. The value of health risks by the TTD and WOE method were higher than that of the traditional method. It could reflect the factual health risk better for male workers in MSWI.

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