sediment sample

In the high mountain area under arid climate, stream sediment geochemical survey at the 1/ 50000 scale was carried out with the sampling density of 4 points per square kilometer. The grain size of the sample in initial preparation stage was-20~+ 120 mesh.

在干旱高山景观区，以4点/km2的采样密度，选择-20~+120目粒级段为初加工粒级，开展1∶5万水系沉积物地球化学测量。

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Sequences related to putative ammonia-oxidizing Archaea were also detected in the deep layer of sediment sample in Lake Taihu.

同时发现，氨氧化古菌存在于太湖较深的底泥样品中。

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Acid-volatile sulfide in river sediment sample was measured by reaction headspace.

采用顶空色谱测定了河流底泥中的可酸挥发硫化物.

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