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ZHANG Zhihuan. Composition and Distribution of MiddleMolecular Weight Normal Alkane Compounds in Sediments from Some Rivers in Tianjin, Northern China[J]. Acta Sedimentologica Sinica, 2007, 25(4): 632-639.
Citation: ZHANG Zhihuan. Composition and Distribution of MiddleMolecular Weight Normal Alkane Compounds in Sediments from Some Rivers in Tianjin, Northern China[J]. Acta Sedimentologica Sinica, 2007, 25(4): 632-639.

Composition and Distribution of MiddleMolecular Weight Normal Alkane Compounds in Sediments from Some Rivers in Tianjin, Northern China

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  • Corresponding author: ZHANG Zhihuan
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2007-08-10
  • The composition and distribution of normal alkane compound in sediments from some rivers with different environmental condition in Tianjin city, northern China, have been investigated. The composition and distribution of middlemolecular weight normal alkane in sediments in different rivers was emphasized in this paper. The origins of middlemolecular weight normal alkane in sediments have been analyzed based on the comparison of normal paraffin hydrocarbon composition among sediment, topsoil, dust fall and TSP. The result shows that the relative content of nC17  or nC19 has obvious predominance compared with other normal paraffin hydrocarbon compound in sediments from different rivers and dust fall. The stable carbon isotope value of nC17  is lower, which is different from the value of normal alkane in fossil fuel (such as oil and coal). The composition predominance of nC17 in topsoil and TSP is not occurrence. It is suggested that the nC17 or nC19 in these samples are derived from aquatic organism, such as algae, in water and surface sediments.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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  • Received:  1900-01-01
  • Revised:  1900-01-01
  • Published:  2007-08-10

Composition and Distribution of MiddleMolecular Weight Normal Alkane Compounds in Sediments from Some Rivers in Tianjin, Northern China

    Corresponding author: ZHANG Zhihuan

Abstract: The composition and distribution of normal alkane compound in sediments from some rivers with different environmental condition in Tianjin city, northern China, have been investigated. The composition and distribution of middlemolecular weight normal alkane in sediments in different rivers was emphasized in this paper. The origins of middlemolecular weight normal alkane in sediments have been analyzed based on the comparison of normal paraffin hydrocarbon composition among sediment, topsoil, dust fall and TSP. The result shows that the relative content of nC17  or nC19 has obvious predominance compared with other normal paraffin hydrocarbon compound in sediments from different rivers and dust fall. The stable carbon isotope value of nC17  is lower, which is different from the value of normal alkane in fossil fuel (such as oil and coal). The composition predominance of nC17 in topsoil and TSP is not occurrence. It is suggested that the nC17 or nC19 in these samples are derived from aquatic organism, such as algae, in water and surface sediments.

ZHANG Zhihuan. Composition and Distribution of MiddleMolecular Weight Normal Alkane Compounds in Sediments from Some Rivers in Tianjin, Northern China[J]. Acta Sedimentologica Sinica, 2007, 25(4): 632-639.
Citation: ZHANG Zhihuan. Composition and Distribution of MiddleMolecular Weight Normal Alkane Compounds in Sediments from Some Rivers in Tianjin, Northern China[J]. Acta Sedimentologica Sinica, 2007, 25(4): 632-639.

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