Applications

Environmental Sources of Steroid Hormones Steroid hormones enter environmental water systems through multiple pathways, primarily from human and animal waste. Estrogens (estrone, estradiol, estriol), androgens (testosterone), progestogens (progesterone), and synthetic hormones (ethinylestradiol) are excreted in urine and feces, passing through wastewater treatment plants that often incompletely remove these compounds. Agricultural runoff containing livestock manure and […]

Trace Analysis Challenges in Environmental Monitoring Environmental contaminants often exist at ultratrace levels—typically in the part-per-billion (ppb) to part-per-trillion (ppt) range—posing significant analytical challenges. Unlike clinical samples where drug concentrations might be in the ppm or ppb range, environmental matrices require handling large sample volumes to obtain detectable analyte quantities. According to research from Tennessee

Typical Contaminants in Environmental Water Samples Environmental water monitoring requires robust analytical methods to detect trace levels of emerging contaminants. Hydrophilic-Lipophilic Balanced (HLB) solid-phase extraction has become the gold standard for analyzing pharmaceuticals and hormones in water matrices due to its exceptional retention capabilities across a wide polarity range. Pharmaceutical residues commonly targeted include antibiotics