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氟(F)是一种黄绿色气体,有剧毒,其在自然界中常以化合物的形态存在,如氟化氢(HF)、氟化钠(NaF)、氟里昂等。在无公害果品产地环境要求中,共涉及两项氟化物限量指标,一是空气中的氟化物,要求月均值低于10微克每平方公米每天;二是灌溉水中氟化物,要求不大于3.0毫克每升。超标的氟化物对无公害果品的生产和人类健康都存在一定的不利影响。
Fluorine (F) is a yellow-green gas, highly toxic, which is often found in the form of compounds such as hydrogen fluoride (HF), sodium fluoride (NaF), freon and the like. In the environmental requirements of pollution-free fruit producing areas, involving a total of two fluoride limit indicators, one is the fluoride in the air, requiring a monthly average of less than 10 micrograms per square meter per day; second irrigation fluoride in the water, the requirement is not greater than 3.0 Mg per liter Exceeding the fluoride on the production of pollution-free fruit and human health there are some adverse effects.