摘要
目的调查水果中锌、铜、钾、钙、镁、锰、铅、镉、铬和硒10种元素含量分布情况。方法采用湿法消解水果样品,火焰原子吸收光谱法检测水果中的锌、铜、钾、钙、镁和锰的含量,石墨炉原子吸收光谱法检测铅、镉、铬和硒的含量。结果 10种元素在水果中各部位的分布有比较大的差异。葡萄、干枣和木瓜中铅含量接近于污染物浓度限量,但没有超过标准。国光苹果、梨、干枣和圣女果中铬的含量都超标。国光苹果、香蕉、梨、干枣、木瓜和柚子中均不同程度检出硒,但没有超过污染物浓度限量。葡萄和干枣中的铜含量超过标准。锌的含量没有超过标准。木瓜中钙含量最高,干枣中镁和锰含量最高。干枣、柚子和圣水果中含钾较高。结论水果果籽中各种元素含量最高,果肉中含量最低。果皮中各种元素含量比果肉中高。
Objective To investigate the contents and distributions of the Zn,Cu,K,Ca,Mg,Mn,Pb,Cd,Cr and Se elements in the fruits.Methods The fruit samples were digested with wet method.Contents of zinc,copper,calcium,magnesium,potassium and manganese were determined by flame atomic absorption spectrometry（FAAS）.Contents of lead,cadmium,chromium and selenium were determined by graphite furnace atomic absorption spectrometry（GFAAS）.Results There existed differences for the element distribution in each part of the fruits.The contents of lead in the grapes,dried jujubes and papaya were close to the pollutant concentration limits,but their contents were lower than standard limits.The contents of chromium in the Guoguang apples,pears,dry jujubes and cherry tomatoes were higher than standard limits.Selenium was detected in the Guoguang apples,bananas,pears,dry jujubes,papaya and pomelo.The contents of copper in the grapes and dry jujubes exceeded standard limits.The contents of zinc were lower than standard limits.The calcium contents were the highest in the papaya.The contents of magnesium and manganese were the highest in the dry jujubes.The contents of potassium were higher in the dry jujubes,pomelo and cherry tomato.Conclusion The highest levels of the elements were in the seeds,and the second levels were in the skin,the lowest levels were in the pulp.The element contents of the peel were higher than those the pulp.
出处
《卫生研究》
CAS
CSCD
北大核心
2011年第3期361-364,共4页
Journal of Hygiene Research
基金
辽宁省2009年教改项目"环境监测课程教学改革研究与实践"
渤海大学2009年校级大学生创新性实验项目
关键词
水果
金属元素
硒消化
原子吸收光谱法
fruit
metal elements
selenium
digestion
atomic absorption spectrometry
作者简介
蔡艳荣，女，硕士研究生，副教授，研究方向：环境监测与环境评价教学与科研
