Determination of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) in livestock feeds

S.E Önel,M Köroğlu,Ş Sungur

doi:10.4314/sajas.v48i6.6

Abstract

The objective of this study was to examine the levels of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) in livestock feeds (calf starter, dairy cattle, fattening cattle, calf growth, lamb starter, lamb growth, dairy sheep, fattening sheep, chick, broiler and layer hen feeds) and feed raw materials (wheat, cottonseed pulp, wheat bran, maize, barley, lentil, wheat straw, bean straw, pea straw and meadow grass). PFOA and PFOS concentrations of 30 livestock feeds, 24 raw feed materials, 9 poultry feeds and 10 water samples were determined by LC-MS/MS. The findings indicated that all the evaluated livestock feeds and feed materials contain perfluorinated compounds. Poultry, cattle, feed raw materials and sheep feed samples were examined for PFOA concentrations and for PFOS concentrations, cattle, poultry, sheep and feed raw materials samples were examined. The highest PFOA concentrations were found in layer hen feed (7.55 μg/kg), dairy cattle feed (6.75 μg/kg) and fattening cattle feed (6.53 μg/kg) respectively. The highest PFOS levels were found in layer hen feed (0.882 μg/kg), calf feed (0.833 μg/kg) and dairy sheep feed (0.830 μg/kg). Keywords : Feed, feed raw materials, LC-MS/MS, perfluorinated compound

Highlights

Perfluorinated compounds (PFCs) are a group of synthetic chemicals characterized by their unique properties such as amphiphilicity and high resistance to degradation
Toxicology studies show that perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) are readily absorbed after oral exposure and accumulate primarily in the serum, kidney and liver
The objective of this study was to examine the levels of PFOA and PFOS in various feeds consumed by cattle, sheep and poultry

Summary

Introduction

Perfluorinated compounds (PFCs) are a group of synthetic chemicals characterized by their unique properties such as amphiphilicity and high resistance to degradation Because of their unique features, PFCs are included in a wide range of products and materials such as protective coatings for cloths and carpets, paper coatings, insecticides, paints, cosmetics and fire-fighting foams, among many others (Buck et al, 2011). This widespread existence causes inevitable exposure of humans, and life in general, to them. This continued exposure could increase body burdens to levels that could result in adverse outcomes (ATSDR, 2009)

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