氟进入人体后,主要由尿排出。测定尿中氟的含量,对了解工人接触氟的程度和评价劳动条件及其改善措施的效果,有一定的实际意义,并可作无机氟中毒诊断参考。由于饮水及多数食物中都含有微量氟,且其含量随地区而异,加之饮水习惯以及检验方法和留样方法不一,各地报导的尿氟正常值 After fluoride enters the body, it is mainly excreted by urine. Determination of urinary fluoride content, to understand the extent of workers exposed to fluorine and evaluate the working conditions and the effect of the improvement measures, has some practical significance, and can be used as inorganic fluoride poisoning diagnosis reference. Because drinking water and most foods contain trace amounts of fluorine, and its content varies with the region, combined with drinking habits and test methods and sample retention methods vary, reported around the normal urinary fluoride