Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay

Yanping Zhang; Guipeng Yang; Yan Chen

doi:10.1007/s00343-009-9020-7

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Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay

OriginalPaper | Updated：2023-05-16

- Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay
- Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay
- 海洋湖沼学报（英文） 2009年27卷第4期页码：851-858
- Affiliations：
  
  Key Laboratory of Marine Chemistry Theory and Technology Ministry of Education College of Chemistry and Chemical Engineering Ocean University of China
- Author bio：
- Funds：
  
  Supported by the Natural Science Foundation of China (No. 40525017), the Science and Technology Key Project of Shandong Province (No. 2006GG2205024) and the “Taishan Scholar” Special Research Fund of Shandong Province, China (No. JS200510016)
- DOI：10.1007/s00343-009-9020-7
  中图分类号：
- 网络首发：2009-12-04，
  
  纸质出版：2009
- Accepted：
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Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay[J]. 海洋湖沼学报（英文）, 2009,27(4):851-858.

Zhang, Y., Yang, G. & Chen, Y. Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay., Chin. J. Ocean. Limnol. 27, 851–858 (2009). https://doi.org/10.1007/s00343-009-9020-7
Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay[J]. 海洋湖沼学报（英文）, 2009,27(4):851-858. DOI： 10.1007/s00343-009-9020-7.

Zhang, Y., Yang, G. & Chen, Y. Chemical characterization and composition of dissolved organic matter in Jiaozhou Bay., Chin. J. Ocean. Limnol. 27, 851–858 (2009). https://doi.org/10.1007/s00343-009-9020-7 DOI：

摘要

Abstract

Biologically utilizable dissolved organic compounds

including dissolved organic carbon (DOC)

dissolved carbohydrates (DCHO) and dissolved free amino acids (DFAA) were analyzed in filtered surface seawater samples collected at 19 stations in Jiaozhou Bay

China

on June 3

2007. In these samples

concentrations of DOC

dissolved free carbohydrates (DFCHO)

dissolved combined carbohydrates (DCCHO)

total dissolved carbohydrates (TDCHO) and total dissolved free amino acids (TDFAA) ranged from 141.7 to 191.1 µmol C/L

1.98 to 18.18 µmol C/L

5.04 to 24.90 µmol C/L

14.52 to 30.36 µmol C/L

and 1.83 to 11.89 µmol C/L

respectively. As a major component of the dissolved carbohydrates

the concentrations of DCCHO were about three times higher than those of DFCHO. Three major constituents of the DFAA were threonine (23.0±5.7 mol%)

glutamic acid (16.6±3.2 mol%) and arginine (9.1±3.3 mol%). Based on the composition of DFAA

a molar C:N ratio of 3.60±0.75 in DFAA was derived

indicating longer carbon chains in the amino acids. DCCHO (8.1%) was the most abundant fraction of DOM in most samples

followed by DFCHO (4.8%) and TDFAA (2.7%). These DOM concentrations displayed a decreasing trend from the coast to the central region. Significant correlations were found between the DCCHO and DFCHO concentrations (r=-0.724

n=19

P<0.001) and the DCCHO and TDCHO concentrations (r=0.506

n=19

P=0.027).

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references

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