摘要
目的 探讨江苏地区稻田养殖小龙虾养殖环境潜在生态风险和小龙虾中重金属含量分布情况及食用安全性。方法 2022年3—6月期间对江苏省稻虾养殖示范基地9个养殖区水质、沉积物和稻虾样品进行采集,并进行重金属含量分析。采用水质综合污染指数,对稻虾养殖环境水质状况进行生态风险评价;采用潜在生态风险指数法评价稻虾养殖环境表层沉积物中重金属潜在风险;采用危害商数法来评价稻虾污染物对人体健康产生风险。结果 部分采样点水质中铜元素有超过GB 11607—1989《渔业水质标准》现象,其余4种元素均在限量值范围内。沉积物生态风险等级为低风险,镉是生态风险最大的重金属元素。部分稻虾肝胰腺砷元素有超标现象,其他4种元素均在GB2762—2017《食品安全国家标准食品污染物限量》限量值范围内,虾肉、肝胰腺中5种元素危害商数值和危害商数总和值均小于1。结论 稻虾养殖区水质整体未受到污染影响,表层沉积物生态风险较低,长期摄入稻虾虾肉、肝胰腺对人体健康风险不明显,安全性较好。
Objective To explore the potential ecological risks of typical Procambarus clarkii breeding environment in Jiangsu Province,the distribution of heavy metals in Procambarus clarkii and its food safety.Methods The concentration of heavy metals in the water,sediment and rice-shrimps which were collected from 9cultivation areas of rice shrimp cultivation demonstration base in Jiangsu Province from March to June in 2020 were analyzed.Comprehensive water quality pollution index was used to evaluate the ecological risk of rice-shrimp culture environment water quality.The potential ecological risk index method was used to evaluate the potential risk of heavy metals in surface sediments of rice-shrimp culture environment.The hazard quotient method was used to evaluate the risk of rice-shrimp pollutants to human health.Results The concentration of Cu in the water collected from some sampling points exceeded the GB 11607—1989 Fishery water quality standard,and the other four elements were within the limit value.The ecological risk level of heavy metals in the sediments was low.The highest potential ecological risk index of heavy metals was Cd.The concentration of the other four heavy metals was within the limit value of GB 2762—2017 National food safety standard-Food pollutant limit except the concentration of As in the liver and pancreas of some rice-shrimp.The hazard quotient and the sum of the hazard quotient of the 5 kinds of heavy metals in shrimp were less than 1.Conclusion The water of the rice-shrimp breeding area is not affected by heavy metals.The ecological risk of heavy metal in sediment is low.The long-term intake of rice-shrimp meat and hepatopancreas has no obvious risk to human health,and it has good safety.
作者
任娣
徐志华
刘崇万
胡月
黄姗
王鹭
朱晓华
REN Di;XU Zhi-Hua;LIU Cong-Wan;HU Yue;HUANG Shan;WANG Lu;ZHU Xiao-Hua(Freshwater Fishery Research Institute of Jiangsu Province,Nanjing 210017,China;Aquatic Products Analysis and Testing Center of Jiangsu Province,Nanjing 210017,China)
出处
《食品安全质量检测学报》
CAS
北大核心
2022年第16期5410-5418,共9页
Journal of Food Safety and Quality
基金
蓝色粮仓科技创新重点专项(2020YFD0900300)。
关键词
小龙虾
重金属
稻田养殖
水质综合污染指数
重金属潜在生态风险
健康风险评价
Procambarus clarkii
heavy metals
rice-field culture
comprehensive pollution index in water
potential ecological risks of heavy metals
health risk assessment
