Determination of Fluorides in Feeding Phosphates

O Synek,M Šucmanová,E Šucman

doi:10.2754/avb197847030159

Abstract

Synek 0., E. Sucman, M. Sucmanova: Determination of Fluorides in Feeding Phosphates. Acta vet. Bmo, 47, 1978: 159-162. A method was elaborated of the determination of fluorides in mineral feeding phosphates using the fluoride ion selective electrode. The following average con tents of fluoride were determined using this method: 0.07 -1.80 g kg -1 in di calciumphosphates, 0.22-2.47 gkg-1 in dinatriumphosphates, 1.97-3.86gkg-1 in pyrophosphates, and 0.21 g kg -1 in ammoniumdihydrogenphosphate. This method of determination is quick, simple and sufficiently accurate. It can be used for controll ing the content of fluoride in mineral feeding phosphates. Feed mixtures, sources of fluorine, fluoride ion selective electrode. Nutrition of farm animals under conditions of modem agricultural large-scale production has become unthinkable without commercially produced feed mixtures of different kinds. A very important component of these feed mixtures are also mineral feeding phosphates which sometimes represent as much as one tenth of the weight of the mixture. These phosphates are necessary both for supplying the organism of farm animals with a sufficient amount of phosphorus and for the optimization of the phosphorus/calcium ration in the feed ration. Along with the optimum com position of feed mixtures it is important to control the purity of their individual components. In feeding phosphates it is namely the content of fluorides which are a natural component of raw materials used for their production.

Highlights

A method was elaborated of the determination of fluorides in mineral feeding phosphates using the fluoride ion selective electrode
With regard to the fact that mineral feeding phosphates are a permanent component of nutrition of farm animals, they represent a potential source of excessive flow of fluorides into the organism
Tab. 1 gives the contents offluorides found in various types of feeding phosphate The lowest content of fluorides (70 mg kg -I) in dicalciumphosphate was found in the sample imported by Soyuzkhimexport

Summary

Introduction

A method was elaborated of the determination of fluorides in mineral feeding phosphates using the fluoride ion selective electrode. This method of determination is quick, simple and sufficiently accurate It can be used for controlling the content of fluoride in mineral feeding phosphates. While cases of acute poisoning are not frequent, it is a well kno",n fact that a long-term excessive uptake of fluorine causes fluoroses. In such cases irreversible changes occur, especially in the bone tissue, in younger animals in teeth (Jagos et al 1977). With regard to the fact that mineral feeding phosphates are a permanent component of nutrition of farm animals, they represent a potential source of excessive flow of fluorides into the organism. That is why a method of fluoride determination was elaborated using the ion selective electrode and in. the commonly applied mineral feeding phosphates this method was used for the determination of the fluoride content

Methods

Results

Conclusion