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胡明辉, Minghui Hu, a Yiping Yang, a J.-M. Martin, b K. Yine & P. J. Harrison
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-1年11月30日
The preferential uptake of selenite (Se(Ⅳ)) over selenate (Se(Ⅵ)) by the marine phytoplankters Chaetoceros calcitrans and Chlorella vulgaris was demonstrated. The Se(Ⅳ)/Se(Ⅵ) ratio in culture medium decreased 3-4 times as the algae grew. The addition of 3.2nM Se(Ⅳ) to the medium was mostly removed by the algae, whereas the higher addition (~6nM) of Se(Ⅵ) remained constant during algal growth. The decrease in Se(Ⅳ) from the medium was greater than the amount of Se taken up by the algae. This difference corresponded approximately to the increase in dissolved organic Se in the culture medium. The characterization of this dissolved organic Se produced by cultures is an important next step to understanding its possible role in nature.
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胡明辉, 苏纪兰, 金翔龙, 袁耀初, 相建海
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-1年11月30日
当世纪之交,回顾20世纪海洋科学进展的历程,肯定进步,总结经验,展望21世纪的发展,选择方向,继往开来。
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