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Example Bjerrum plot: Change in carbonate system of seawater from ocean acidification.. A Bjerrum plot (named after Niels Bjerrum), sometimes also known as a Sillén diagram (after Lars Gunnar Sillén), or a Hägg diagram (after Gunnar Hägg) [1] is a graph of the concentrations of the different species of a polyprotic acid in a solution, as a function of pH, [2] when the solution is at ...
Jannik Bjerrum (son of Niels Bjerrum) developed the first general method for the determination of stability constants of metal-ammine complexes in 1941. [1] The reasons why this occurred at such a late date, nearly 50 years after Alfred Werner had proposed the correct structures for coordination complexes, have been summarised by Beck and Nagypál. [2]
Bjerrum plot: Change in carbonate system of seawater from ocean acidification Changes in ocean chemistry can have extensive direct and indirect effects on organisms and their habitats. One of the most important repercussions of increasing ocean acidity relates to the production of shells out of calcium carbonate ( CaCO 3 ). [ 4 ]
While the biological carbon pump fixes inorganic carbon (CO 2) into particulate organic carbon in the form of sugar (C 6 H 12 O 6), the carbonate pump fixes inorganic bicarbonate and causes a net release of CO 2. [46] In this way, the carbonate pump could be termed the carbonate counter pump.
The Bjerrum length (after Danish chemist Niels Bjerrum 1879–1958 [1]) is the separation at which the electrostatic interaction between two elementary charges is comparable in magnitude to the thermal energy scale, , where is the Boltzmann constant and is the absolute temperature in kelvins.
Marine biogenic calcification is the production of calcium carbonate by organisms in the global ocean.. Marine biogenic calcification is the biologically mediated process by which marine organisms produce and deposit calcium carbonate minerals to form skeletal structures or hard tissues.
A Bjerrum defect is a crystallographic defect which is specific to ice, and which is partly responsible for the electrical properties of ice. [1] It was first proposed by Niels Bjerrum in 1952 in order to explain the electrical polarization of ice in an electric field. [ 2 ]
Jannik Bjerrum (1909–1992), Danish chemist (son of Niels Janniksen Bjerrum) Jannik Petersen Bjerrum (1851–1920), Danish ophthalmologist (father of Niels Janniksen Bjerrum) Kirstine Bjerrum Meyer (1861–1941), Danish physicist (sister of Jannik Petersen Bjerrum)