Einen neuen Extractionsapparat

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One‐dimensional chains in sodium tetraphenylphosphonium bis(2‐mercapto‐4‐methylphenolato‐O,S)oxovanadate(IV)

The title compound, Na(C₂₄H₂₀P)[V(C₇H₆OS)₂O], contains oxovanadium(IV) in a square‐pyramidal coordination geometry with a basal plane consisting of a cis‐S₂O₂ donor group. The [VO(mmp)₂]^2? (mmpH₂ = 2‐mercapto‐4‐methyl­phenol) units are linked into infinite chains by the sodium ions.     

Some Isoperimetric Inequalities in Electrochemistry and Hele Shaw Flows

Isoperimetric inequalities are applied to a moving-boundaryproblem for doubly-connected domains. This problem occurs forexample in electrochemistry, in which case the domains in questionare the electrolyte of an electrolytic cell. The two electrodessurrounding the electrolyte are assumed to grow or dissolve,at different rates in general, by electrochemical reaction.We obtain optimal estimates showing, for example, that the leastchange in volume of each electrode always occurs in sphericalsymmetry.     

Nachweis und Bestimmung der Benzo?s?ure in Lebensmitteln

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Arsen

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Nachweis und Bestimmung des Chroms

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