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测定食物中氟含量对估计地方性氟中毒病区居民摄氟量和探索氟中毒病区人和动物的生物学指标有一定意义。为此,我们研究了用氟电极测定这些样品中氟含量的方法。建立了适用于粮食、蔬菜、毛发、骨骼及其它动物样品的多用途方法,现报告如下。 材料与方法 一、主要器材:PXU-2通用离子计、氟电极、甘汞电极、磁力搅拌器、镍坩埚(50毫升)、微量进样器(10微升,100微升),分样筛(20-200目)、变温电炉、灰化盒(加工的铁皮制品,见下图)、电子
Determining the fluoride content in food has certain significance for estimating fluoride exposure of residents in endemic fluorosis area and exploring the biological indexes of human and animal in fluorosis area. For this reason, we studied the method of measuring the fluorine content of these samples with a fluorine electrode. The establishment of a multi-purpose method suitable for food, vegetables, hair, bones and other animal samples is as follows. Materials and methods 1. Main equipment: PXU-2 universal ion meter, fluorine electrode, calomel electrode, magnetic stirrer, nickel crucible (50ml), microinjector (10μl, 100μl) (20-200 mesh), variable temperature furnace, ashing box (processed metal products, see below), electronic