Occurrence of Bisphenol A in soil and leachate of a municipal landfill: effect of the sample acidification

Nathalia  Cristine Viecelli; Ricardo  Perazzoli Baldasso; Irajá  do Nascimento Filho; Kira  Lusa Manfredini

doi:10.18226/23185279.v2iss1p10

Authors

Nathalia Cristine Viecelli Aluna do programa de doutorado em Engenharia do Ambiente da Universidade Técnica de Lisboa, Instituto Superior Técnico, pelo Ciências sem Fronteiras (CAPES)
Ricardo Perazzoli Baldasso Mestrando do Programa de Pós-graduações em Engenharia e Ciências Ambientais da UCS.
Irajá do Nascimento Filho Instituto de Saneamento Ambiental da Universidade de Caxias do Sul
Kira Lusa Manfredini Instituto de Saneamento Ambiental da Universidade de Caxias do Sul

DOI:

https://doi.org/10.18226/23185279.v2iss1p10

Keywords:

Bisphenol A, soil, leachate, sanitary landfill, gas chromatography

Abstract

The main objective of present study was the quantitative analysis of bisphenol A (BPA) in soil and leachate of a municipal
sanitary landfill. The influence of the solvent polarity and pH over the quantitative analysis of BPA in the leachate was
also investigated. The soil samples were collected from closed cells and extracted by Soxhlet extraction with ethanol. The
liquid samples, from row leachate from the same sanitary landfill were extracted by Solid Phase Extraction (SPE) with C-18 cartridges and ethanol. The organic extracts from liquid and solid samples were analyzed by Gas Chromatography with Flame Ionization Detector (GC/FID). For the soil and liquid samples the average concentrations of BPA were 21.30 (±0.61) µg kg-1 and 26.83 (±2.69) µg L-1, respectively. These results were far above the ones cited in the literature and are of special concern because BPA may disrupt the human endocrine system. The acidification allows the increase of 5% of the extraction efficiency. In this way, the acidification step is recommended for the quantification of BPA in samples where the concentration of this analyte is below 0.1%. In these cases the acidification step may avoid important loss of the analyte and improve the detection limit in the instrumental analysis.