Major and trace elemental analysis in milk powder by inductively coupled plasma-optical emission spe

来源 :Journal of Environmental Sciences | 被引量 : 0次 | 上传用户:jiguso198735
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Major and trace element in seven different kinds of milk powder were studied. The concentration of 24 elements were determined by ICP OES method, from these elements 9 elements determined by INAA. The determination of trace element contents of foodstuffs, especially milk as daily drink for all peoples age which being a complex food has great importance. The elemental analysis of milk is important both as an indicator of environmental contamination and because milk is a significant pathway for toxic metal intake and a source of essential nutrients for humans. The major elements are Ca, K, Mg, Na, P and S. While trace element are B, Ba, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Sb, Se, Sn, Sr, V, W and Zn. ICP OES technique is shown to be a powerful tool for trace determinations in powder samples. This is shown by its use for analysis of a series of the milk powders mentioned and comparative results of other direct technique such as instrumental neutron activation analysis. Analysis of both standard reference material A 11 milk powder and NBS Orchard leaves for quality accurance had been completed, and used for a relative method calculate. The importance of the major and trace elements to human health was discussed. Major and trace element in seven different kinds of milk powder were studied. The concentration of 24 elements were determined by ICP OES method, from these elements 9 elements determined by INAA. The determination of trace element contents of foodstuffs, especially milk as daily drink for all peoples age which is being complex food has great importance. The elemental analysis of milk is important both an an indicator of environmental contamination and because milk is a significant pathway for toxic metal intake and a source of essential nutrients for humans. Ca, K, Mg, Na, P and S. While trace elements are B, Ba, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Sb, Se, Sn, Sr, V, W and Zn. ICP OES technique is shown to be a for tool for trace determinations in powder samples. This is shown by its use for analysis of a series of the milk powders mentioned and comparative results of other direct techniques such as instrumental neutron activation analysis. Analysis o f both standard reference material A 11 milk powder and NBS Orchard leaves for quality accurance had been completed, and used for a relative method calculate. The importance of the major and trace elements to human health was discussed.
其他文献
近年来,岳阳市狠抓各项工作落实,推进安全监管常态化、长效化、规范化,安全生产形势持续稳定向好,连续多年被评为全省安全生产先进市州。该市在推进安全监管常态化、长效化、
文章基于甘肃省2015年地区生产总值(GDP)、年末常住人口以及14个地级市(州)之间的公路距离三项指标计算了各城市间的可达性系数和经济隶属度,发现随着距离的增加,兰州市对其
延迟系统、高阶系统、非最小相位系统和非线性系统是比较特殊的工业对象.介绍了对前三种对象所采用的PID前馈控制方案,并由大量的实验数据总结出控制器整定经验公式,仿真实验
目的为了解上海市现有的职业卫生技术服务机构在闵行区提供服务的情况,旨在提高对服务机构的监管力度和监管水平。方法收集和整理2008—2011年各有资质的检测机构开展的生产
随着我市经济社会快速发展,对人才的需求也在发生变化,但是目前我市人才队伍建设机制已经跟不上形势发展的需要。这就要求市委政府积极创新人才机制,打破用人的条条框框,用好现有
四大资产管理公司十年大限已到,其何去何从引来众多讨论。本文就将从其不良资产证券化的业务入手,探讨该业务在将来的发展中所适合的发展模式。 我国四大资产管理公司自1999
在信息产业高度发展的今天,集成电路技术被认为是信息产业的基石,其在国民经济中的重要地位不言而喻。而集成电路相关的知识产权,更是关系着科技进步与产业发展,为此,许多国家及国
对冲基金自1949年起源已有50多年历史,自1992年欧洲货币危机和1997~1998年东南亚金融危机之后,对冲基金开始引起各国学者和政府的高度关注。危机以后,对冲基金又呈现出新的投资特
减负增效对美术课堂教学来说具有特殊的意义,它具体表现在对低年级要重视学习习惯的培养,对中高年级要注重学习方法的形成,从而拓展学生的兴趣爱好,提高美术课堂教学的实效性
期刊
在强调“以人为本”的今天,企业员工的健康是企业可持续性发展不可或缺的重要一环.衡阳风顺车桥有限公司(以下简称“风顺车桥”)为一家机械制造类企业,主要生产车桥和悬架类