ICP-AES-内梅罗指数法研究皮革工业区蔬菜中的重金属污染  

Heavy Metal Element Pollution of Cultivated Vegetables in Leather Industrial Zone by ICP-AES with Nimerlo Composite Index

作　　者：张胜帮[1] 胡柏禧 

机构地区：[1]温州大学生命与环境科学学院,浙江温州325027

出　　处：《食品科学》2015年第4期221-225,共5页Food Science

摘　　要：目的:通过内梅罗综合指数法分析皮革工业区种植的蔬菜重金属含量,研究蔬菜食品的风险。方法:采用硝酸-双氧水体系微波消解法对样品进行消解,用电感耦合等离子体原子发射光谱法测定蔬菜中重金属元素Pb、Cd、Ni、Cr,并采用内梅罗综合指数法对重金属污染程度进行评价。结果:Pb、Cd、Ni、Cr元素的检出限为0.3~4 mg/L,变异系数为0.59%~4.48%。回收率为86.4%~103.5%。青菜、白菜、芥菜、芹菜和萝卜中重金属元素的内梅罗污染综合指数分别为4.028、3.014、3.345、7.111、7.383。表明种植的青菜、芥菜、白菜、芹菜和萝卜存在严重的食品安全风险。结论:可以采用内梅罗综合指数法评价蔬菜中重金属污染程度。Objective: To study the quality and safety of cultivated products in leather industrial zone. Methods: The heavy metal elements Pb, Cd, Ni and Cr in the vegetables were determined by ICP-AES after HNO3-H2O2 digestion. The pollution degree was evaluated by Nimerlo composite index. Results: The detection limits for Pb, Cd, Ni and Cr was 0.3–4 mg/L, with coefficients of variation ranging from 0.59% to 4.48%, and the recovery rates of the metal elements from spiked samples were 86.4%–103.5%. Nimerlo composite index was 4.028, 3.014, 3.345, 7.111 and 7.383 for pakchoi, Chinese cabbage, mustard greens, celery and radish, respectively. Based on overall evaluation of heavy metal pollution, especially Pb, such farmland should not be planted vegetables including mustard greens, Chinese cabbage, celery and radish. Conclusion: The pollution degree of heavy metals in vegetables can be judged by the Nemero index.

关 键 词：重金属 皮革工业区 蔬菜 内梅罗综合指数法 电感耦合等离子体原子发射光谱法 微波消解 

分 类 号：X836[环境科学与工程—环境工程]