毕业论文移动版

摘要为了解杭州市蔬菜基地蔬菜重金属Ni的富集特性、污染状况以及健康风险，本研究对杭州市主要菜地蔬菜进行重金属Ni含量测定及评价。结果表明，杭州市菜地各类蔬菜中Ni的平均含量变化不大，虽然部分蔬菜中Ni的检出率较高，但所有种类蔬菜中Ni含量均不存在超标现象。杭州市菜地各类蔬菜重金属Ni污染等级均为1级，污染水平均为清洁水平。叶菜类蔬菜对Ni的富集能力与其他种类蔬菜相比较强。与成人、老年人相比，小孩通过蔬菜饮食更容易产生健康风险，在最高浓度水平下，杭州市菜地蔬菜中Ni是一种安全元素。4优尔9Abstract: In order to understand the Hangzhou vegetable base vegetable Enrichment characteristics, pollution status and health risk of heavy metals nickel. In this study, the determination of heavy metals nickel and Evaluation in the main vegetable base vegetable in Hangzhou Farmland. The results show that, the average content of nickel has little change in all kinds of vegetables in Hangzhou City. Although in some vegetables in the higher detection rate of nickel, but in all kinds of vegetables in the nickel content does not exist exceed the standard phenomenon. Hangzhou Farmland vegetable heavy metal nickel pollution grade was grade 1, pollution levels are clean level. The leafy vegetables to nickel enrichment ability is better than other kinds of vegetables. Compared with adults and elderly, the children through vegetable diet are more prone to health risks. At the highest level, Hangzhou city vegetable in nickel is a security element.

毕业论文关键词：重金属Ni;富集特性;污染状况;健康风险;含量

Keyword: Heavy metal nickel; Enrichment characteristics; Pollution status; Health risk; Content

目  录 3

摘  要 4

引 言 5

1. 材料和方法 6

1.1 样品采集 6

1.2 样品分析 6

1.3 数据计算 7

1.4 蔬菜Ni污染及健康风险评价方法 7

1.4. 1 单项污染指数法 7

1.4.2 健康风险评价 8

2.结果分析 8

2.1 杭州市蔬菜中Ni含量分析 8

2.1.1 不同类别蔬菜Ni含量特征分析 8

2.1.2 不同品种蔬菜Ni含量区域分布特征 9

2.1.2.1 叶菜类蔬菜中Ni含量及其分布特征 9

2.1.2.2 茄果类蔬菜中Ni含量及其分布特征 10

2.1.2.3 瓜菜类蔬菜中Ni含量及其分布特征 11

2.1.2.4 根茎类蔬菜中Ni含量及其分布特征 11

2.1.2.5 葱蒜类及豆类蔬菜中Ni含量及其分布特征 11

2.2 杭州市蔬菜Ni富集特性及污染评价 12

2.2.1 叶菜类蔬菜Ni富集特性及污染评价分析 12

2.2.2 茄果类蔬菜Ni富集特性及污染评价分析 13

2.2.3 瓜菜类蔬菜Ni富集特性及污染评价分析 13

2.2.4 根茎类蔬菜Ni富集特性及污染评价分析 14

2.2.5 葱蒜类、豆类蔬菜Ni富集特性及污染评价分析 14

2.3 杭州市蔬菜对当地居民的健康风险评估 (责任编辑：qin)