Identification of alkylphenols and other estrogenic phenolic compounds in wastewater, septage and groundwater on Cape Cod, Massachussetts

Article Abstract:

Two analytical methods using HLPC and GC/MS were developed for a range of compounds identified as endocrine-disrupting chemicals (EDCs), including the nonionic surfactants alkylphenol polyethoxylates (APEOs) and their degradation products. The initiative is part of a bigger effort to determine the impacts to drinking water supplies in Cape Cod, MA, from on-site astewater disposal. Using the HPLC method, total APEOs in untreated wastewater and septage samples ranged from 1350 to 11,000 milligrams/Liter, and this and other results suggest that septic systems may be a significant source of APEOs to groundwater.

Science & research, Water Pollution by Geographic Location, Article

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Evaluation of standard methods for the analysis of methyl tert-butyl ether and related oxygenates in gasoline-contaminated groundwater

Article Abstract:

Three purge-and-trap gas chromatography methods used for monitoring oxygenate compounds, such as methyl tert-butyl ether, in groundwater at leaking underground storage tank sites in the United States are evaluated. The Environmental Protection Agency's (EPA) 8240B/60B and ASTM Method D4815 are reliable in detecting oxygenates in groundwater, but EPA Method 8020A/21B often produces inaccurate and false-positive results because of interfering hydrocarbons.

Land-Based Source Water Pollution, Brief Article, Measurement, Pollution, Water, Underground, Groundwater, Oxygenates, Oxygenates (Fuel additives)

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Evaluation of an ELISA kit for the detection of metribuzin in stream water

Article Abstract:

The performance of the enzyme-linked immunosorbent assay (ELISA) kit in detecting the pesticide metribuzin in stream samples was compared with that of solid-phase extraction and the GC/MS method. Results showed the ELISA kit outperformed other methods of metribuzin detection. The ELISA kit was also found to tolerate excessive amount of chemical substances found in the sample, as well as varying pH levels.

Surgical and Medical Instrument Manufacturing, Surgical and medical instruments, Pesticides Control, Enzyme Immunoassay Analyzers, Methods, Usage, Pollution control, Environmental monitoring, Enzyme-linked immunosorbent assay, Pesticides, Immunoassay, Immunoenzyme techniques, Environmental monitoring equipment

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