干燥方式对粮食硒和氟含量的影响  

Influence of grain drying mode on selenium and fluorine concentrations in grain

作　　者：李永华[1] 王五一[1] 

机构地区：[1]中国科学院地理科学与资源研究所,北京100101

出　　处：《中国地方病学杂志》2003年第2期174-175,共2页Chinese Jouranl of Endemiology

基　　金：国家自然科学基金资助项目 (40 1710 0 6);中国科学院创新基金资助项目 (CXIOG A0 2 0 5 )

摘　　要：目的　查明不同干燥方式对粮食硒、氟含量的影响 ,选择最佳的粮食干燥方法。方法　运用流行病学调查法分类采集大巴山区不同干燥方式下的粮食样品。硒的测定用DAN荧光分光光度法 ,氟的测定用氟离子选择电极法。结果　与日晒干燥方式相比 ,敞烧煤火熏烤可使粮食中的硒、氟含量同时成倍甚至成数百倍增加 ,降氟炉灶烘烤能有效降低粮食干燥后期的硒、氟污染。结论　在大巴山区应摒弃敞烧煤火熏烤的粮食干燥方法 。Objective Studying the influence of different grain drying modes on selenium and fluorine concentrations in order to find out the most feasible mode of grain drying.Methods Through epidemiologic investigation, classified grains were collected according to different grain drying modes. Selenium in grains was determined by DAN fluorescence spectrophotometer, while fluorine was determined by fluoride ion selective electrode method.Results Selenium and fluorine concentrations in grains dried by smoke baking mode increased one or several hundred times compared with sun baking mode. Using defluoridation stove drying mode can effectively mitigate the selenium and fluorine contamination.Conclusions Smoke baking mode used to dry grains must be abandoned, while sun baking mode is strongly recommended. In the meantime, defluoridation stoves should be spread over the whole Daba Mountains.

关 键 词：干燥方式 氟含量 氟离子选择电极法 荧光分光光度法 硒 干燥方法 大巴山区 降氟炉灶 流行病学 粮食干燥 推广使用 调查法 DAN 氟污染 测定 日晒 火熏 

分 类 号：S379[农业科学—农产品加工]