作　　者： ; ; ; ; ;

机构地区： 嘉应学院生命科学学院

出　　处： 《广东农业科学》 2014年第12期100-104,109,共6页

摘　　要： 采用电感耦合等离子体原子放射光谱法(ICP-AES)测定了粤东北地区9种鱼类6种重金属的质量分数。结果表明:该9种鱼类肝胰脏中重金属质量分数的平均值由高至低为Zn>Cu>Pb>Cr>Mn>Cd,而肌肉为Zn>Cr>Pb>Mn>Cu>Cd,且鱼肝胰脏的重金属质量分数平均值均高于其相应的肌肉。单因子污染指数分析结果表明,该9种鱼均受到Pb、Cd、Cr、Cu和Zn不同程度的污染,其总体污染水平由高至低为Pb>Cd>Cr>Cu>Zn,且大多数鱼类肝胰脏中Pb、Cd质量分数超标。同时,鱼体内的重金属质量分数没有随营养等级升高而升高。综上所述,粤东北地区9种淡水经济鱼类分别受到Pb、Cd、Cr、Cu和Zn的不同程度的污染,表明该地区水域生态环境或渔业安全生产已存在重金属污染的安全隐患。 Concentrations of lead （Pb）, cadmium （Cd）, chromium （Cr）, copper （Cu）, zinc （Zn） and manganese （Mn） were measured in various organs （such as hepatopancreas and muscle） from 9 species of freshwater economic fishes which were collected from northeast area of Guangdong province. The concentration of metals was measured by inductively coupled plasma atomic emission spectrometry （ICP-AES）. Results showed that the levels of metals in hepatopancreas of the fishes were had the order of Zn 〉Pb 〉Cu 〉Hg 〉Cd, while in muscles were Zn 〉Cr 〉Pb 〉Mn 〉Cu 〉Cd. In general, the metals concentrations were significantly higher in hepatopancreas samples than those in muscle samples. The result of pollution index of single factor shoued that, the fishes, to one degree or another, were polluted by Pb, Cd, Cr, Cu and Zn, and pollution levels were mostly followed by Pb〉Cd〉Cr〉Cu〉Zn. The indexes of Pb and Cd tested in hepatopancreas of the fishes were in a majority exceeded the national safety criteria for food in China. What＇s more, the contents of the heavy metals in fishes did not vary with the trophic level. In summary, the fishes were polluted by Pb, Cd, Cr, Cu and Zn to some extent, which indicated that hidden danger of heavy metals pollution was present in ecological environment or fishery production in the area.

关 键 词： 经济鱼类 重金属 肌肉 肝胰脏 评价

领　　域： [农业科学] [农业科学]