食品中的重金属污染及其检测技术研究

食品领域出现了越来越严重的食品安全问题,食品安全直接关系到人们的身体健康,重金属污染是一个重要问题,食品重金属污染问题急需解决。本文主要从食品中重金属的主要来源及其危害进行分析,并对食品中重金属检测技术进行研究,重点阐述了原子荧光光谱法、原子吸收光谱法、电感耦合等离子体质谱法,以做好食品安全检测工作。     

食品中常见的重金属污染途径及检测方法

随着我国社会的不断发展,人们对食品安全提出了更高的要求,通过分析近年来我国食品安全事故发现,重金属含量超标问题占据很大的比例,重金属超标会对人体的器官造成严重伤害,影响人们的生活质量。本文将从食品中常见的重金属污染途径入手,详细介绍食品中重金属的检测方法。     

食品中的重金属检测技术及其发展探讨

随着人们生活条件的改善,人们对食品安全越来越关注。因此,就需要食品检测部门加强对食品的检测力度,以确保人们的食品安全。而在食品安全中,重金属污染是其中的一个重要问题,如果任由被污染的食品流入市场,会威胁人民群众的人身安全。本文先围绕食品中重金属的主要来源及其危害进行分析,然后对食品中重金属检测技术进行了探讨,重点阐述了原子荧光光谱法、原子吸收光谱法、X射线荧光光谱法以及电感耦合等离子体-质谱法这几种重金属检测方法;紧接着对各种检测方法的优缺点进行对比,了解到在不同的领域和不同的场合之中,需要运用不同的检测方法;并对食品进行重金属检测的主要意义进行了分析;最后对重金属检测技术进行了展望,了解到食品中的重金属检测应当以预防为主。     

食品中常见的重金属污染与检测方法探究

随着我国社会的飞速进步和经济的快速发展,但是,随之而来的环境污染也渐渐凸显出来,而且越来越严重。在食品行业,重金属污染日益严重,对食品的安全问题产生了严重的影响,威胁人们的食品安全。为了解决这一棘手问题,减轻这一污染问题,需要对食品中的重金属元素进行检测,成熟高效的检测技术是必不可少的,对于减少重金属污染也是必不可少的,研究和开发高效成熟的重金属检测技术具有重要的意义。     

石墨炉原子吸收法测定食品中铅含量的不确定度

近年来,人们对食品安全方面的问题较为关注。重金属属于食品安全中危害性较高的一项,按照不同的食品种类对其中的重金属含量和比例数值进行限量。其中,铅属于食品安全中常见的微量重金属元素,国家已将其列为重金属污染检测项目中。按照国家食品安全的相应标准,采用石墨炉原子吸收法测定食品中的铅元素,并分析其不确定度。因此,本文主要实验与验证石墨炉原子吸收法检测结果的准确性。     

食品安全中重金属检测方法及应用研究

食品安全直接关系人们的身体健康,食品重金属污染也是食品安全中迫切需要解决的问题。本文首先分析食品重金属的来源及其危害,并重点就当前应用较为广泛的4种食品重金属检测方法原理及其现实应用进行探讨,并对各种方法的应用领域、优点和不足进行对比,最后对食品重金属检测方法的发展进行展望,以更好地做好食品安全检测工作,为人类健康筑起一道安全屏障。     

食品中常见重金属污染的研究

目前,重金属含量超标导致的食品安全事故越来越多,该问题已经成为制约社会和谐稳定发展的主要因素,如何有效解决此类问题成为当前的重要任务之一。本文分析食品中的重金属污染问题,提出合理的重金属污染治理途径,维护食品安全。     

食品中重金属对人体的危害及预防探析

随着我国经济的快速发展,重金属污染现象曰益严重。而食品中的重金属污染会给人们的身体健康带来危害。基于此,从重金属概念和食品中重金属的预防两个方面阐述重金属的危害。并提出政府应加强水质污染的管理,加强无公害安全食品的生产和推广;人们该注意从生活中减少食品中重金属污染的来源,加强食品安全的质量监管。     

探讨食品中重金属检测技术及其发展

在食品安全问题中,重金属污染是一个极其重要的问题,如果有被重金属污染的食品流入市场并被消费者购买食用,就会对其造成严重的损害,甚至会对其生命安全构成威胁。本文通过分析食品中重金属的来源及危害,结合现有的主要重金属检测技术,对食品进行重金属检测的主要意义进行探讨。     

中国粮食重金属污染现状及防控对策

重金属检测一直是人们比较关注的问题,针对粮食中所含有的重金属含量检测更是当前社会发展中的首要任务之一。粮食重金属污染不仅威胁着人们的身体健康,还会给国家经济发展造成影响。本文首先分析了重金属污染粮食的特征,并论述了当前粮食重金属污染的状况,并在此基础上提出了重金属污染粮食和食品防控对策。     

纳米技术在聚烯烃中的研究进展

综述了聚烯烃纳米复合材料的优点、使用价值和近年来国内外聚烯烃纳米复合材料的研究进展，并介绍了无机粒子／聚烯烃复合材料和粘土／聚烯烃复合材料，重点阐述了粘土与聚乙烯、聚丙烯纳米复合材料的制备方法及粘土／聚烯烃纳米复合材料插层热力学分析，对目前聚烯烃纳米复合材料存在问题及发展前景进行了探讨。     

Developments in Consumer Protection in India

This paper surveys the major developments in the field of consumer protection in India since 1984, when the statutory provisions for regulating unfair trade practices were incorporated for the first time.Among the developments described in the paper is the strengthening of provisions for consumer protection through amendments to the Act regulating restrictive and monopolistic trade practices (the MTRP Act). Public-sector undertakings and co-operative societies have been brought within the purview of the Act, and consumers have obtained the right to participate in inquiry proceedings before the MRTP Commission.Consumers and their associations have been given the right to seek redress of grievances arising out of the violation of certain pieces of legislation, including the Drugs and Cosmetics Act. The Consumer Protection Act, 1986, was enacted in order to provide speedy and inexpensive redress of consumers' grievances. Redress can now be sought before any consumer court also for negligence or deficiency in medical services.The Bureau of Indian Standards Act, 1986, has strengthened the measures for the standardisation and quality control of manufactured goods.A Consumer Welfare Fund has been set up to provide financial assistance to voluntary consumer organisations and for the general development of consumer movement in the country. A spurt in voluntary consumer organisations in different parts of the country can also be observed.Other developments include the establishment of a separate Department of Consumer Affairs in the Union Government and the setting up of a Consumer Product Testing Laboratory.     

关于我国资产证券化若干问题的探讨

资产证券化是一项复杂的金融工具创新,引进和实施这种新型的融资工具需要大量的配套工作。我国实施资产证券化需要解决特设机构的设立、基础资产的选择、破产隔离、信用增级、会计处理、税收政策以及立法和监管等方面的问题。     

Healthy Investments in Investing in Health

This article discusses socially responsible investing (SRI) and tobacco. SRI allows investors, both institutional and individual, to express their concerns and make their social and ethical stands known to the companies they invest in and patronize. The tobacco industry is active in every country on the globe and generates huge profits, while tobacco use is responsible for 4 million deaths every year.The authors explore past and current views on investment in tobacco, partly based on a survey conducted by the Tobacco Free Initiative of the World Health Organization (WHO). There is clearly a trend toward divestment from tobacco for both ethical and financial reasons. Tobacco-free investments can be both ethically sound and financially profitable.     

Economic Keywords in 2007 in China

RMB exchange rate The exchange rate of Renminbi,the Chinese currency, witnessed an appreciation of around six percent to one U.S. dollar this year. On December 13, the central parity rate stood at RMB 7.3568 against one dollar,according to the Chinese Foreign Exchange Trading System, breaking the 7.36 mark.     

Changes in market structure in Poland

This article describes the market structure in Poland during the first stages of the economic reform of 1981–1983. The negative consequences of monopolistic market structure in a centrally planned economy are discussed. The possibility of market-structure diversification by companies is presented.     

Conflict in Supplier–Retailer Relationships in the Brewery Industry in Cameroon

The authors develop a theoretical framework to explain conflict in supplier–retailer relationships. In addition to traditional influence strategy variables, the framework links conflict to retailer dependence and supplier formalization. The framework is empirically tested in the Cameroonian brewery industry. The findings support the view that channel conflict is inversely related to retailer dependence and supplier formalization. Contrary to expectations, the use of noncoercive influence strategies (information exchange and recommendations) has no significant effect on conflict, while, as expected, the use of coercive influence strategies (threats and promises) increases conflict.     

粤北山区砖园仓储粮机械通风应用研究

在砖园仓机械通风应用试验中,正确运用理论计算,精确得出通风技术数据,依此设计通风系统,结果表明：在实仓运行中,检测的主要技术参数和设计值基本相符,经136h通风,粮温从38℃降至13℃,吨粮降温耗电0.011℃,降温好、电耗低,证明设计方法正确,符合南方稻谷产区,解决了基层普遍存在的砖园仓机械通风盲目设计问题,为规范设计作出了示范,验证了粮层压力正确计算方法。