The colony image is recognized using the cellular automaton in this paper.The experiment shows that this method can recognize whether they have consistency between the examined apparatus and the swatch in the set their conform ability can be judged.This method is of significance for improving the level of food safety and healthy.
A new method using ultra-performance liquid chromatography-electrospray ionization tandem mass spectrometry for the analysis of melamine simulants in food contact materials has been developed.Through a series of experiments,we combined with the relevant national standards,and based on the actual sample tests,which show that in the food processing,packaging,sterilization some materials will cause some migration of melamine,may bring some food quality and safety problem.The experimental results can provide some technical support for food packaging materials producers,food production and processing enterprises,while non-human to add melamine to food sources of the latest experimental data,improve the delivery of national standards for the relevant experimental evidence.
A new method for determining nitrovin in animal products by liquid chromatography-electrospray ionization tandem mass spectrometry was developed.Sample preparation and HPLC-MS/MS analytical conditions were examined and optimized.Samples were extracted,cleaned up and then detected by LC-ESI-MS/MS method.External standard method was used for quantification in the multiple-reaction monitoring mode.Limit of detection(LOD) was 2.0 μg/kg.The method showed good linearity in the range of 1.0-100.0 μg/L for nitrovin(r>0.99).The average recoveries of nitrovin in animal products ranged from 66% to 82%.
按《检测和校准实验室能力认可准则》要求,规范做好相关记录工作,作为管理体系运行的证据,满足可追溯性的要求.
采用烟雾传感器和温度传感器构成复合型传感器,将信号处理算法软件设置在该传感器的微处理器内.神经网络智能算法对各传感器采集的信号和时间信号进行智能化处理.由此提出了一种基于气体烟雾传感器通过PLC和计算机控制的食用油烟点自动检测系统.
检测和校准方法及方法的确认是实验室工作的依据,是直接影响结果报告的最重要因素之一。
一、前言 食品接触材料、容器与食品安全密切相关,国家在食品安全市场准入制度中规定只有合格的原材料、食品添加剂、包装材料和容器才能生产出符合质量安全要求的食品,因此食品接触材料、容器的安全性是食品安全的重要组成部分.
<正> 中国有一句人们耳熟能详的古话,叫做"民以食为天"。吃一直是百姓生死攸关的大事,是最基本的民生问题,古今中外,概莫能外。随着我国经济的快速发展和人民生活水平的不断提高,城乡居民对食品质量安全提出了越来越高的要求;随着经济全球化进程的
本文从实验室内审的过程方法及关键点入手,简要论述了实验室内审方案的管理,信息的收集和验证,内审方案的实施;进而引入了实验室内审方案的控制,特别就内审方案管理的授权,实验室内审的目的,内审员的要求和培养及其内审方案的监视和评审,做了较为详细分析和论述。从而理解GB/T19011-2003/ISO 19011∶2002"质量和(或)环境管理体系审核指南"标准对实验室质量管理内部审核的作用以及追求质量管理体系持续改进的意义。
国家质检总局今年加强了对白酒产品的监督抽查力度,近期共抽查了北京、天津、河北等15个省、自治区、直辖市221家企业生产的221种产品,产品抽样合格率为77.4%,平均实物质量抽样合格率为85.1%。本次抽查中发现的主要质量问题是白酒产品的酒精度、总酸、己酸乙酯、固形物含量、杂醇油、标签标注等方面达不到标准的要求。
