Perchlorate Contamination and Its Health Impacts
Summary
Perchlorate is a highly soluble and persistent anion commonly derived from industrial and military sources as well as certain fertilisers and natural mineral deposits. Once introduced into the environment, perchlorate readily migrates through soil and aquifers, leading to widespread contamination of surface and groundwater resources. Its principal health concern arises from competitive inhibition of iodide uptake by the thyroid gland, which may disrupt synthesis of key hormones such as thyroxine and triiodothyronine. In vulnerable populations – notably pregnant women and infants – even modest perturbations of thyroid function can have lasting impacts on neurodevelopment and metabolic regulation. Regulatory standards for perchlorate in drinking water vary globally but often fall below parts per billion owing to the compound’s potent bioactivity at low concentrations. Ongoing research addresses the pathways of environmental fate, analytical detection limits, human exposure assessment and the interplay of perchlorate with other halide and goitrogenic substances. Practical applications range from advanced sorbent technologies to in situ biodegradation, underscoring the need for integrated strategies that safeguard public health and maintain water security on a global scale.
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Perchlorate Contamination and Its Health Impacts publication trend
The graph below shows the total number of articles in perchlorate contamination and its health impacts across all publications each year (not limited to Nature Index journals).
Technical terms
Perchlorate (ClO4−): A highly soluble, persistent anion that inhibits iodide uptake in the thyroid gland.
Adsorption: The process by which molecules adhere to the surface of a solid sorbent material.
Bioremediation: The use of microorganisms to degrade or transform environmental contaminants into less harmful products.
Thyroxine (T4): A major hormone produced by the thyroid gland, essential for regulating metabolism and development.
References
- Highly Selective Removal of Perchlorate from Water: Roles of Unconventional Hydrogen Bond and Hydrophobic Cavity. Engineering (2025).
- A review of perchlorate contamination: Analysis and remediation strategies. Chemosphere (2023).
- Thyroid Hormones and Moderate Exposure to Perchlorate during Pregnancy in Women in Southern California. Environmental Health Perspectives (2015).
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