苏州地水产蔬菜中重金属含量的检测分析研究论文设计VIP专享

摘要目标：利用原子光谱测定法，确定苏州水产养殖水果和蔬菜中重金属成分的数量和危害。什么与土壤相比，三种主要的重金属取样方法确定了最佳的取样方法。研究水果和蔬菜中的土壤与重金属的一致性。方法：对苏州水产养殖共有 12 种水果和蔬菜进行了研究，并根据国家标准对水果和蔬菜中重金属的危害进行了评估。苏州水产养殖 51 个样本点的重金属锌、铅、铜和镉都用稀释的氯化酸、脱水和乙烯酸进行了采样。关键词：果蔬；土地；重金属；危害；相干；取样；盐酸； 共 页 第 页ABSTRACT ABSTRACT：Objective: To determine the content and harm of heavy metals in aquatic fruits and vegetables in Suzhou by atomic spectrophotometry. than Compared with the three sampling methods of heavy metals in land, the best sampling method was determined. The correlation between heavy metals in land and fruits and vegetables was studied. Methods: 12 kinds of fruits and vegetables and land commonly used in fisheries in Suzhou were investigated and studied, and heavy metal hazards in fruits and vegetables were evaluated according to the national standards. Heavy metals such as zinc, lead, copper and cadmium were sampled from 51 samples of fishery products in Suzhou by dilute hydrochloric acid, deionized water and ethylenediaminetetraacetic acid, and their contents were determined by atomic spectrophotometry.KEYWORDS ： Fruits and vegetables; land; heavy metals; hazards; coherence; sampling; hydrochloric acid;目录目录引言4第一部分果蔬中重金属危害调查研究5材料与方法51 ．器材与试剂 5 2．仪器优化操作参数 53 ．实验方法 5 3．1 样本采集：53．2 样本的处理：64 ．评价方法 6 4．1 果蔬质量评价采用指数法。65．统计结果与分析7结果71．果蔬中重金属元素的成分的量及及评价71．1 果蔬中的锌成分的量分布特征71．2 果蔬中的铜成分的量分布特征81．3 果蔬中的铅成分的量分布特征9共 页 第 页1．4 果蔬中的镉成分的量分布特征102．果蔬及土地中的重金属危害评价 11讨论13结论14引言地球上的重金属来源多种多样...