Johanna Knechtel

A simple and rapid hydride generation—atomic absorption method for the determination of arsenic in biological, environmental and geological samples

Ralph G. Smith, J.C. Van Loon, Johanna Knechtel et al. · Analytica Chimica Acta · 1977 · 25 citations

Environmental Chemistry, Engineering, Environmental Geochemistry +8

Wet digestion method for the determination of mercury in biological and environmental samples

Johanna Knechtel, J. L. Fraser · Analytical Chemistry · 1979 · 22 citations

Altmetric Attention Score, J. L. Frasercite, Environmental Chemistry +19

Brownification reduces oxygen gross primary production and community respiration and changes the phytoplankton community composition: An in situ mesocosm experiment with high‐frequency sensor measurements in a North Atlantic bay

Tanguy Soulié, Herwig Stibor, Sébastien Mas et al. · Limnology and Oceanography · 2022 · 19 citations · Full text

Eutrophication, Engineering, Marine Chemistry +16

Determination of chlorine dioxide in sewage effluents

Johanna Knechtel, Edward G. Janzen, Edward R. Davis · Analytical Chemistry · 1978 · 11 citations

Engineering, Effluent Disposal, Environmental Engineering +10

Utilisation of the mercury(II) chloride complex for the long-term storage of samples containing part per 109 levels of mercury

Johanna Knechtel · The Analyst · 1980 · 10 citations

Statistical Review, Chemical Engineering, Environmental Chemistry +14