ABSTRACT

Yucatan is a region with a high impact of water contamination since it has a karst type soil favoring contaminants entry into the phreatic level, the only source of freshwater in the area. However, no studies report pesticides in water for human consumption or the risk it represents. The objective of this study was to detect and measure pesticide concentrations in domestic tap water to estimate the risk (carcinogenic and non-carcinogenic) to health. A non-probabilistic sampling was applied of 48 tap water sources, and then pesticide detection with solid-phase extraction gas chromatography coupled to the electron capture and flame photometric detectors allowed the estimation of risk through hazard ratios. The present results suggest that aldrin, heptachlor, and β-BHC residues in domestic tap water from Ticul, Yucatan, pose a risk to children’s health, particularly for potential carcinogenic risks.

摘要

尤卡坦是一个受水污染影响很大的地区，因为它的喀斯特土壤有利于污染物进入潜水位，这是该地区唯一的淡水来源。然而，没有研究报告人类消费水中的杀虫剂或其所代表的风险。本研究的目的是检测和测量家用自来水中的农药浓度，以估计对健康的风险（致癌和非致癌）。对 48 个自来水水源进行了非概率采样，然后使用与电子捕获和火焰光度检测器相结合的固相萃取气相色谱进行农药检测，从而可以通过风险比估计风险。目前的结果表明，尤卡坦提库尔的生活自来水中存在艾氏剂、七氯和 β-六六六残留物，