摘要：

Objective: To apply analytical procedures for the determination of phthalates, bisphenol A and their metabolites in various matrices (urine, blood serum, adipose tissue, infusion sets) to instrumentation available in the lab and perform analysis of samples provided by the clinics. To determine the exposure to phthalates and bisphenol A in different epidemiological groups of patients and to confirm or refute the likely exposure to these substances during parenteral nutrition. To find out whether phthalates accumulate in human adipose tissue. Design: A cross-sectional study Material and Methods: The study analyzed biological material (urine, blood serum, subcutaneous adipose tissue) and infusion sets for parenteral treatment by instrumental analytical techniques, allowing to determine the content of phthalates, bisphenol A and their metabolites. Results: For 10 out of 16 analyzed metabolites, the resulting amounts found in the urine were in the range above the limit of quantitation in more than 50 % of the samples, e.g. monoethyl phthalate - 98.1 % and mono n butyl phthalate 78.1 % of samples. The highest amount characterized by 95th percentile was recorded for monoethyl phthalate - 192.8, mono-nbutyl phthalate - 116.7, and for mono-(2-ethyl-5-carboxypentyl) phthalate - 96.9 g/L. In serum, the proportion of values lower than limit of quantitation was high except for mono-n-butyl phthalate. All the concentrations of analyzed phthalates and bisphenol A obtained by chromatographic analysis of materials, bags and infusion sets were below limit of quantitation as well as the concentrations in infusion solutions. In all the samples of subcutaneous adipose fat tissue the determined concentrations of selected phthalates were below limit of quantitation. Conclusion: The concentrations of most metabolites in urine are measurable which makes possible their use in the analyses of epidemiological link to other investigated factors as obesity, or type 2 diabetes mellitus. Increased exposure to phthalates and bisphenol A for patients on total parenteral therapy has not been proven since those substances were detected neither in infusion sets materials nor in infusion solutions. Accumulation of selected phthalates in subcutaneous adipose tissue was not detected.

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