MilliporeSigma

Transfer of eight phthalates through the milk chain--a case study.

Environment international (2012-11-10)
T Fierens, M Van Holderbeke, H Willems, S De Henauw, I Sioen
ABSTRACT

This survey determined the levels of eight phthalates - i.e. dimethyl phthalate (DMP), diethyl phthalate (DEP), diisobutyl phthalate (DiBP), di-n-butyl phthalate (DnBP), benzylbutyl phthalate (BzBP), di(2-ethylhexyl) phthalate (DEHP), dicyclohexyl phthalate (DCHP) and di-n-octyl phthalate (DnOP) - in several Belgian milk and dairy products. Samples were obtained from various farms, a dairy factory and from different shops in order to investigate phthalate contamination "from farm to fork". At several stages in the milk chain, product contamination with phthalates - mostly DiBP, DnBP, BzBP and DEHP - was observed. At farm level, the mechanical milking process and the intake of phthalate containing feed by the cattle were found to be possible contamination sources. At industry and retail level, contact materials including packaging materials were additional contamination sources for phthalates in milk and dairy products.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Dioctyl phthalate, ≥99.5%
Sigma-Aldrich
Diisobutyl phthalate, 99%
Sigma-Aldrich
Phthalic acid, puriss. p.a., ≥99.5% (T)
Sigma-Aldrich
Dibutyl phthalate, 99%
Sigma-Aldrich
Dimethyl phthalate, ≥99%
Supelco
Bis(2-ethylhexyl) phthalate, Selectophore
Sigma-Aldrich
Phthalic acid, reagent grade, 98%
Sigma-Aldrich
Dicyclohexyl phthalate, 99%
Sigma-Aldrich
Phthalic acid, ACS reagent, ≥99.5%
Sigma-Aldrich
Dimethyl phthalate, ≥99%
Supelco
Bis(2-ethylhexyl) phthalate solution, certified reference material, 2000 μg/mL in methanol
Supelco
Di-n-butyl phthalate solution, certified reference material, 5000 μg/mL in methanol
Supelco
Density Standard 1191 kg/m3, H&D Fitzgerald Ltd. Quality
Supelco
Diisobutyl phthalate, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Supelco
Bis(2-ethylhexyl) phthalate, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Supelco
Dibutyl phthalate, certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland
Supelco
Dibutyl phthalate, PESTANAL®, analytical standard
Supelco
Bis(2-ethylhexyl) phthalate, PESTANAL®, analytical standard
Supelco
Dimethyl phthalate, PESTANAL®, analytical standard
Supelco
Potassium phthalate monobasic, reference material for titrimetry, certified by BAM, ≥99.5%
Sigma-Aldrich
Potassium phthalate monobasic, puriss. p.a., ≥99.5% (T)
Supelco
Diethyl phthalate, PESTANAL®, analytical standard
Sigma-Aldrich
Di-n-octyl phthalate, ≥98.0% (GC)
Sigma-Aldrich
Diethyl phthalate, 99.5%
Sigma-Aldrich
Diethyl phthalate, ≥99%
Sigma-Aldrich
Potassium phthalate monobasic, ACS reagent, acidimetric standard
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Phthalic acid dipotassium salt, 98%
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Potassium phthalate monobasic, BioUltra, ≥99.5% (T)
Sigma-Aldrich
Potassium hydrogen phthalate, BioXtra, ≥99.95%
Supelco
Di-n-octyl phthalate, analytical standard