| 金铜矿下游农户家养番鸭体内重金属分布特征及其评价 |
| 摘要点击 1726 全文点击 1324 投稿时间：2011-11-30 修订日期：2012-02-11 |
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| 中文关键词 重金属 番鸭 分布特征 风险评价 金铜矿 |
| 英文关键词 heavy metal muscovy duck distribution characteristics risk assessment Au/Cu mine |
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| 中文摘要 |
| 为研究采矿活动及其污染事故对家禽养殖的影响,分别采集了金铜矿下游两岸不同村庄农户家养番鸭10只,分析了鸭肉、鸭肝和鸭血样品中Cu、Hg和As的含量,并对番鸭体内重金属的健康安全进行了评价. 结果表明,在相同组织中,Cu含量较Hg和As高. 在不同组织中,鸭肝样品中Cu含量最高,平均值为17.20 mg·kg-1,而Hg和As在3个组织间含量无明显差异. 金铜矿下游两岸不同村庄农户番鸭样品体内3个组织中Cu、Hg和As的含量均未显示出明显的空间分布规律,表明污染事故及正常的采矿活动未对下游两岸村庄农户家养番鸭样品构成明显影响. 所研究番鸭体内3个组织中的Cu、Hg和As的含量都处于正常值范围,且番鸭健康状况未表现出异常. 但参照国家食品卫生标准评价结果显示,鸭肝样品中Cu超标率达到100%,最高超标1.74倍,部分鸭肉、鸭血与鸭肝样品中Hg含量也达到较高水平. |
| 英文摘要 |
| To investigate the impacts of mining and spilling activities on domestic fowl raising, ten muscovy duck (Cairna moschata) samples were collected in 2010 from farms in different villages located at the banks of the river originated from an Au/Cu mine. Concentrations of Cu, Hg and As in muscle, liver and blood of the muscovy duck samples were determined. According to relative national standards of China, the health safety of heavy metals in muscovy duck was evaluated. The results indicated that content of Cu was higher than those of Hg and As in the same tissue of the duck. The average content (17.20 mg·kg-1) of Cu in liver of the duck was higher than those in other tissues, but the concentrations of Hg and As had no significant difference among three tissues of the duck. There was no significant spatial distribution pattern of Cu, Hg and As in three tissues of the duck samples collected from the farms in different villages located at the banks of the river, indicating no significant impacts of mining and spilling activities on the ducks samples. The contents of Cu, Hg and As in the tissues of the duck samples fell in normal level ranges, and the ducks didnt show abnormal physical symptoms. According to the tolerance limits of heavy metals in foods of China, Cu in livers of the duck samples exceeded the standard by 100%, and the highest value of Cu in the liver was 1.74 times higher than its maximum allowable concentration in foods. Moreover, Hg contents in some muscle, blood and liver tissues of the duck samples were relatively high. |
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