IDEAS home Printed from https://ideas.repec.org/a/gam/jijerp/v16y2019i6p929-d214035.html
   My bibliography  Save this article

Characteristics of Dissolved Organic Nitrogen in the Sediments of Six Water Sources in Taihu Lake, China

Author

Listed:
  • Xiaofan Yang

    (College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 24100, China)

  • Xueyu Wei

    (College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 24100, China)

  • Xiaoping Xu

    (College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 24100, China)

  • Yu Zhang

    (College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 24100, China)

  • Jincheng Li

    (College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 24100, China)

  • Jie Wan

    (College of Biological and Chemical Engineering, Anhui Polytechnic University, Wuhu 24100, China)

Abstract

KCl-extractable sediment dissolved organic nitrogen (KS-DON) extracted from sediments near drinking water intakes of six drinking water sources in Taihu Lake in China was partitioned into hydrophobic and hydrophilic fractions and high/low molecular weight fractions. The results showed that the total dissolved nitrogen (TDN) contents of the extracts ranged from 67.78 to 128.27 mg/kg. KS-DON was the main TDN species, accounting for more than 50%, with NH 4 + -N and NO 3 − -N averaging 30% and 20%, respectively. The molecular weight fractions of <1 kDa accounted for almost half of KS-DON. Hydrophilic compounds accounted for more than 75% of KS-DON. Three fluorescence peaks were identified: soluble microbial byproducts (A); protein-like substances (B); and humic acid-like substances (C). It is concluded that the KS-DON in Taihu Lake sources has higher bioavailability and higher risk of endogenous release. Ecological dredging and establishment of constructed wetlands are possible measures to reduce the release of endogenous nitrogen.

Suggested Citation

  • Xiaofan Yang & Xueyu Wei & Xiaoping Xu & Yu Zhang & Jincheng Li & Jie Wan, 2019. "Characteristics of Dissolved Organic Nitrogen in the Sediments of Six Water Sources in Taihu Lake, China," IJERPH, MDPI, vol. 16(6), pages 1-13, March.
    • Handle: RePEc:gam:jijerp:v:16:y:2019:i:6:p:929-:d:214035
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1660-4601/16/6/929/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1660-4601/16/6/929/
    Download Restriction: no
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ye Pan & Yuan Yuan & Ting Sun & Yuxin Wang & Yujing Xie & Zhengqiu Fan, 2020. "Are the Water Quality Improvement Measures of China’s South-to-North Water Diversion Project Effective? A Case Study of Xuzhou Section in the East Route," IJERPH, MDPI, vol. 17(17), pages 1-21, September.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jijerp:v:16:y:2019:i:6:p:929-:d:214035. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.