Health risk assessment of abandoned agricultural soils based on heavy metal contents in Hong Kong, the world's most populated city
Health risk assessment of abandoned agricultural soils based on heavy metal contents in Hong Kong, the world's most populated city
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DOI：
10.1016/j.envint.2010.04.014
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发表时间：
2010-08-01
影响因子：
11.8
通讯作者：
Wong, Ming H.
中科院分区：
文献类型：
--
作者：
Man, Yu Bon;Sun, Xiao Lin;Wong, Ming H.
本研究的目的是评估香港农业土壤的改变和用途对人类健康的风险。本研究建立了以下优先元素的浓度：砷，铜，镉，铬，铅和锌的总负担（使用混合酸微波消解）和金属生物可及性（使用体外模拟胃液）。55个地点代表12种不同的土地利用类型，即农业（A），废弃农业（Ab），有机农场（OF），集装箱储存（CS），建筑废物（CW），电子废物储存（EW（S）），电子废物拆解车间（EW（DW）），电子废物露天焚烧场（EW（OBS）），露天焚烧场（OBS），加油站（PS），金属回收车间（MRW）和汽车拆解车间（CDW）。元素浓度随后被用于确定危害指数（成人和儿童）。使用总元素浓度的第95百分位数值，仅针对EW（OW）土地利用类型表明潜在危害增加的成年人得出综合（摄入、皮肤和吸入）危害指数（HI）（HI = 1.16）。另一方面，当使用总元素浓度的第5百分位值来推导儿童的综合危害指数时，CS、MRW、PS、EW（OW）、EW（OBS）和CDW土地利用类型的危害指数值超过1（分别为1.21、1.19、1.52、1.21、1.81和2.04）。(C)2010爱思唯尔有限公司版权所有。
The objective of this study was to evaluate the consequence of changing and using agricultural soils to other purposes in Hong Kong with respect to risk to human health. This study established concentrations of the following priority elements: As, Cu, Cd, Cr, Pb and Zn in terms of total burden (using mixed acid microwave digestion) and with respect to metal bioaccessibility (using an in vitro simulated gastric solution). 55 locations were sampled representing 12 different land use types, namely, agricultural (A), abandoned agricultural (Ab), organic farm (OF), container storage (CS), construction waste (CW), e-waste storage (EW (S)), e-waste dismantling workshop (EW (DW)), e-waste open burning site (EW (OBS)), open burning site (OBS), petrol station (PS), metal recycling workshop (MRW) and car dismantling workshop (CDW). The elemental concentrations were subsequently used to establish Hazard Indices (for adults and children). 95th percentile values of total elemental concentrations were used to derive a combined (ingestion, dermal and inhalation) Hazard Index (HI) only for adults where the EW (OW) land use type indicated the potential for increased harm (HI = 1.16). On the other hand, where 5th percentile values of total elemental concentrations were used to derive a combined Hazard Index (HI) for children the HI values exceeded 1 for CS, MRW, PS, EW (OW), EW (OBS) and CDW land use types (respectively, 1.21, 1.19, 1.52, 1.21, 1.81 and 2.04). (C) 2010 Elsevier Ltd. All rights reserved.