| 戚原野,王李宝,万夕和,凌云,乔毅,王长海.江苏沿岸四种贝类软体铅的含量特征及其风险评价[J].农业环境科学学报,2016,35(2):253-260. |
| 江苏沿岸四种贝类软体铅的含量特征及其风险评价 |
| Content and risk assessment of lead in four species of shellfish in Jiangsu coastal area |
| 投稿时间：2015-09-08 |
| DOI：10.11654/jaes.2016.02.007 |
| 中文关键词: 江苏沿岸 贝类 铅 含量特征 风险评价 |
| 英文关键词: Jiangsu coastal area bivalve lead content risk assessment |
| 基金项目:国家海洋公益性行业科研专项(2013418007-1);国家科技支撑计划(2012BAC07B03);省属公益院所科研条件与能力建设(BM2014040);南通市应用研究计划(BK2013056);南通市科技项目(HL2014014) |
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| 中文摘要: |
| 于2012年9月-2013年8月和2015年3月采集江苏沿岸文蛤、青蛤、杂色蛤、四角蛤蜊4种主要滩涂贝类样品,分析贝类软体铅(Pb)含量及其时空变化特征,采用点估计法和靶标危害系数法评价贝类软体Pb含量对人体暴露的风险。结果表明,采集的江苏沿岸4种主要滩涂贝类软体Pb含量范围为0.05~0.56 mg·kg-1,均值为0.23 mg·kg-1,所有贝类软体Pb含量均低于GB 2762-2012(1.5 mg·kg-1)和NY 5073-2006(1.0 mg·kg-1)限值。茅家港站位4种贝类软体中Pb含量均在夏季达到最高值,分别为文蛤0.77 mg·kg-1、青蛤0.12 mg·kg-1、杂色蛤0.23 mg·kg-1、四角蛤蜊0.61 mg·kg-1,文蛤和四角蛤蜊月度波动变化较为显著,青蛤和杂色蛤月度变化不显著;空间分布特征为贝类软体Pb含量最高值在S3站位(陈家港,0.44 mg·kg-1),次高值位于S4站位(滨海港,0.32 mg·kg-1),最低值位于S11站位(洋口港,0.21 mg·kg-1),其余站位差异较小,基本在0.21~0.30 mg·kg-1之间。江苏沿岸居民在正常消费水平下,摄入地产经济贝类后,靶标危害系数(THQ)值均未超过1。风险评价结果显示,正常消费水平下,江苏沿岸4种滩涂贝类软体Pb暴露对目标人群的健康风险较低。 |
| 英文摘要: |
| Lead(Pb) accumulation in bivalves poses a potential risk to human health. In this investigation, Meretrix meretrix, Cyclina sineusis, Ruditapes variegate and Mactra venerformis were collected from September 2012 to August 2013, and March 2015 from Jiangsu coastal area, to evaluate Pb risk to local inhabitants through food chain. Concentrations of Pb in bivalves were determined using atomic absorption spectrophotometry(AAS). Point estimate and target hazard quotient were employed to assess the health risk of Pb. The concentrations of Pb in four species of bivalves ranged from 0.05 mg·kg-1 to 0.56 mg·kg-1, with the mean concentration of 0.23 mg·kg-1, lower than the limits(1.5 mg·kg-1) of national standard(GB 2762-2012) and of industrial standard(1.0 mg·kg-1, NY 5073-2006) set in China. The highest concentrations of Pb in four species of bivalves generally occurred in summer, which was 0.77 mg·kg-1, 0.12 mg·kg-1, 0.23 mg·kg-1 and 0.61 mg·kg-1 for M. meretrix, C. sineusis, M. venerformis and R. variegata, respectively. The seasonal fluctuation of Pb concentrations was obvious in M. meretrix and M. venerformis, but not in C. sineusis and R. variegata. The Pb concentrations had spatial distribution, with high Pb(0.44 mg·kg-1) occurred in station 3, followed by station 4(0.32 mg·kg-1), and low in station 11(0.21 mg·kg-1). There was no significant difference in Pb concentrations among other stations, ranging from 0.21 mg·kg-1 to 0.30 mg·kg-1. THQ values of local economical shellfish did not exceed 1 under the normal consumption level of residents in Jiangsu coastal area. The exposure to Pb in four species of bivalves from Jiangsu coastal area would not endanger human health in normal consumption. |
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