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液相色谱-串联质谱法测定谷物类食品中T-2毒素 被引量:1
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作者 陈瀚锋 方科益 陈树兵 《环境化学》 CAS CSCD 北大核心 2018年第5期1169-1171,共3页
本文建立了一种对谷物类食品中T-2毒素的检测方法.通过条件探索,采用乙腈-水(84∶16)作为提取溶剂,振荡超声结合的提取方式,多功能净化柱进行净化,高效液相色谱-质谱联用仪(LC-MS/MS)进行分析测试,内标法定量.通过检出限、回收率及精密... 本文建立了一种对谷物类食品中T-2毒素的检测方法.通过条件探索,采用乙腈-水(84∶16)作为提取溶剂,振荡超声结合的提取方式,多功能净化柱进行净化,高效液相色谱-质谱联用仪(LC-MS/MS)进行分析测试,内标法定量.通过检出限、回收率及精密度等方法学验证实验表明,该方法检出限为5μg·kg-1,定量限为10μg·kg-1,三水平加标回收率在100.4%—101.0%之间,精密度在1.16%—3.33%之间. 展开更多
关键词 T-2毒素 谷物类食品 高效液相色谱-质谱联用法
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国外谷物早餐食品的生产技术
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作者 郑建仙 《国外科技》 1992年第4期22-24,共3页
关键词 食品 谷物类食品 国外 生产
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Share-Shift Analysis of Geo-Economic Pattern on Global Cereal Crops in Recent 50 Years
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作者 Zhao Xia Feng Zhming +1 位作者 Li Peng Yang Yanzhao 《Chinese Journal of Population,Resources and Environment》 2011年第1期71-77,共7页
In recent 50 years, with the rapid development of international food trade, the geoeconomic pattern of cereal crops has changed tremendously which produced a significant impact on global food security. This paper atte... In recent 50 years, with the rapid development of international food trade, the geoeconomic pattern of cereal crops has changed tremendously which produced a significant impact on global food security. This paper attempted to analysis the production pattern and trade pattern of global cereals, especially three main crops of wheat, maize and rice by using the method of share-shift. Given the fact of almost every economic phenomenon is driven by their economic return behind them, this paper attempted to a further step into their economic pattern by examining their net trade flow. The results showed that from the view of production and trade, the geographic pattern of global cereals has changed greatly which can be described as developing countries has replaced developed countries and become the world's biggest cereals production and trading area. But when moving to the net trade flow, it turns out to be another story that can depicted as the regional fixation features of economic returns which can be convinced from the labor division of global cereals trade, among which developed countries acts as net trade profit area while developing countries as net trade output area, and their gap between net export and net import has been widening from the view of evolution trend. So what we learn from the evolution of geoeconomic pattern on this topic is that our place in global cereals trade system, and therefore alert us to concern not only on the pattern transition but also the economic meaning behind it, only by doing so can we learn to plan our food future more wisely and effectively. 展开更多
关键词 cereal crops economic-geographical pattern share- shift GLOBAL
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