Nonylphenol monoethoxylate

Isobe, T., H. Nishiyama, A. Nakashima and H. Takada. Distribution and behaviour of nonylphenol, octylphenol, and nonylphenol monoethoxylate in Tokyo metropolitan area their association with aquatic particles and sedimentary distributions. Environ. Sci. Technol. 35 1041-1049, 2001. 

The first national-scale study of emerging contaminants in the United States found that such compounds were commonly present in stream systems, with 80% of the streams sampled having at least one compound detected [11]. Over 60% of the chemical concentrations exceeding 1 xg/L were from three detergent metabolites (4-nonylphenol, 4-nonylphenol monoethoxylate, and 4-nonylphenol diethoxylate). In addition, transformation products also were frequently detected (e.g., cotinine, 1,7-dimethylxanthine, erythromycin H2O). This study indicated the enormous potential for parent compoimds to degrade during environmental transport and for the transformation products to contribute much of the relative loading of these contaminants. The results confirm the need to include both parent compoimds and transformation products in occurrence studies. 

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