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EXPERIMENT 11 The Isolation of Natural Products

Recently, Pongratz and Heumann have shown that besides methylated Hg and Pb also monomethyl-Cd can be detected in the polar ocean (10, 11, 24). Because the experiments with polar macroalgae did not show any production of methylated Cd, it must be assumed that other marine organisms are responsible for the existence of MeCd in the ocean. Incubation experiments with isolated mixed and pure bacterial cultures of polar origin, collected in the Weddell Sea, were therefore carried out and the production of methylated heavy metal eompounds was followed during the growth of these baeteria. The total (inorganic) heavy metal concentration of the natural sea water from the Weddell Sea, used in these... [Pg.194]

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Isolates products

Of natural products

Product isolation

Products of nature

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