The influence of hydrogeological and anthropogenic variables on phthalate contamination in eogenetic karst groundwater systems

Environmental Pollution
Norma I TorresAkram Alshawabkeh

Abstract

This study investigates the occurrence of six phthalates and distribution of the three most-detected phthalates in the karst region of northern Puerto Rico (KRNPR) using data from historical records and current field measurements. Statistical data analyses, including ANOVA, Chi-Square, and logistic regression models are used to examine the major factors affecting the presence and concentrations of phthalates in the KRNPR. The most detected phthalates include DEHP, DBP, and DEP. At least one phthalate specie is detected above DL in 7% of the samples and 24% of the sampling sites. Concentrations of total phthalates average 5.08 ± 1.37 μg L-1, and range from 0.093 to 58.4 μg L-1. The analysis shows extensive spatial and temporal presence of phthalates resulting from dispersed phthalate sources throughout the karst aquifers. Hydrogeological factors are significantly more important in predicting the presence and concentrations of phthalates in eogenetic karst aquifers than anthropogenic factors. Among the hydrogeological factors, time of detection and hydraulic conductivities larger than 300 m d-1 are the most influential factors. Persistent presence through time reflects continuous sources of phthalates entering the aquifers and a ...Continue Reading

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Citations

Sep 5, 2019·Journal of Exposure Science & Environmental Epidemiology·Yanelli Rodríguez-CarmonaDeborah Watkins
Oct 31, 2020·Environmental Health Perspectives·Xuehua LiKiwao Kadokami
Nov 29, 2020·Water Environment Research : a Research Publication of the Water Environment Federation·Harikaranahalli Puttaiah ShivarajuRevanna Harini
Jun 18, 2021·The Science of the Total Environment·Paul M BradleyVickie S Wilson

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