Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Erika E Hargesheimer"'
Publikováno v:
Water Research. 34:2818-2828
Two volatile organic compounds (VOCs) responsible for the majority of taste and odour events in drinking water are geosmin (trans-1,10-dimethyl-trans-9-decalol) and MIB (2-methylisoborneol). These VOCs have odour threshold concentrations at ng l−1
Publikováno v:
Journal - American Water Works Association. 90:32-41
Minor changes (1-2mg/L) in the primary coagulant dosage can significantly affect particle counts in filtered water. Jar tests were inconclusive in selecting a coagulant dosage for source water of low turbidity (
Autor:
Susan B. Watson, Erika E. Hargesheimer
Publikováno v:
Water Research. 30:1423-1430
The effectiveness of drinking water treatment options for eliminating seasonal taste and odor events caused by phytoplankton blooms in the source water were evaluated. Dissolved air flotation (DAF), conventional gravity sedimentation (CGS), ozonation
Publikováno v:
Journal - American Water Works Association. 84:46-53
Instruments that simultaneously count and size individual particles can be used for analyzing raw-water particulates, optimizing chemical dosages, measuring particulates in fiter effluent, determining filter efficiency in terms of percent removal of
Autor:
Joan K Bartz, Yvonne D Stokker, Larry G Lane, Charles Sellers, Robert Graves, Forest C Garner, Gary W Mappes, Ann B. Strong, Gerald R Myrdal, Erika E Hargesheimer
Publikováno v:
Journal of AOAC INTERNATIONAL. 73:169-169
Publikováno v:
Journal of AOAC INTERNATIONAL. 64:833-840
A simple gas-liquid chromatographic (GLC) method has been developed which provides sensitivity and specificity for the analysis of complex mixtures of the commonly occurring herbicide metabolites aniline, 3-chloroaniline, 4-chloroaniline, 4-bromoanil
Autor:
Ronald T Coutts, Erika E Hargesheimer
Publikováno v:
Journal of AOAC INTERNATIONAL. 66:13-21
A method is presented for the detection and confirmation of trace chlorophenol residues in environmental and biological samples by mass spectrometry with selected ion monitoring (SIM). Propionate and acetate ester derivatives of phenol, cresols, mono
Publikováno v:
Canadian Water Resources Journal. 14:53-70
Bench scale (jar test), pilot plant scale (0.016 ML/day capacity) and full treatment plant scale trials were used to optimize cold water chemical pretreatment processes. A number of metallic coagul...
Publikováno v:
Environmental Technology Letters. 5:433-440
A simple aqueous acetylation method was successfully applied to the analysis of ppb to low ppm levels of phenolic compounds in waste‐waters from the Syncrude Canada Ltd. oil sands plant in northern Alberta. Phenolics in process‐affected waters, a
Autor:
Erika E Hargesheimer
Publikováno v:
Journal of AOAC INTERNATIONAL. 67:1067-1075
Methane chemical ionization (CI)-selected ion monitoring (SIM) mass spectrometry was used to identify and conclusively distinguish 19 organochlorine pesticides from polychlorinated biphenyls (PCBs) at parts-per-trillion to parts-per-billion levels in