Simultaneous determination of PIP and POP in seawater

Li Ning; Li Xuegang; Song Jinming

doi:10.1007/BF02842585

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Simultaneous determination of PIP and POP in seawater

OriginalPaper | Updated：2023-05-16

- Simultaneous determination of PIP and POP in seawater
- Simultaneous determination of PIP and POP in seawater
- 海洋湖沼学报（英文） 2004年22卷第2期页码：146-149
- Affiliations：
  
  1. Institute of Oceanology Chinese Academy of Sciences
  2. Graduate School Chinese Academy of Sciences
- Author bio：
- Funds：
  
  This study was supported by the Knowledge Innovation Program of Chinese Academy of Sciences No. KZCX1-SW-01-08, KZCX3-SW-214, and the “100-Talents Project” of Chinese Academy of Sciences and the National Science Foundation for Outstanding Young Scientists No. 49925614.
- DOI：10.1007/BF02842585
  中图分类号：
- 纸质出版：2004
- Accepted：
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Simultaneous determination of PIP and POP in seawater[J]. 海洋湖沼学报（英文）, 2004,22(2):146-149.

Ning, L., Xuegang, L. & Jinming, S. Simultaneous determination of PIP and POP in seawater., Chin. J. Ocean. Limnol. 22, 146–149 (2004). https://doi.org/10.1007/BF02842585
Simultaneous determination of PIP and POP in seawater[J]. 海洋湖沼学报（英文）, 2004,22(2):146-149. DOI： 10.1007/BF02842585.

Ning, L., Xuegang, L. & Jinming, S. Simultaneous determination of PIP and POP in seawater., Chin. J. Ocean. Limnol. 22, 146–149 (2004). https://doi.org/10.1007/BF02842585 DOI：

摘要

Abstract

A method for simultaneous determination of particulate inorganic phosphorus (PIP) and particulate organic phosphorus (POP) in seawater was improved. After using cellulose acetate membrane to filter the seawater samples and washing the membrane with 1mol/L hydrochloric acid

PIP was extracted into hydrochloric acid phase and POP was left on the membrane. POP was oxygenated at 120°C

0.12MPa with potassium persulphate. Phosphomolybdate blue spectrophotometry was used in the determination. The proper volume of seawater sample for simultaneously determining PIP and POP was 100–150ml

containing PIP≥0.27μg

POP≥0.69μg. Relative Standard Deviation (RSD) of the determination of PIP and POP was 5.8% and 4.3% respectively. This method was used to determine POP and PIP in the surface water of Huiquan Bay

Qingdao

China. PIP content there averaged at 69.0μg/L and POP at 3.3 μg/L. PIP is the main form (>93%) of particulate phosphorus (PP). Maximum PIP coincided with flood tide

indicating that PIP mainly originated from disturbance of surface sediments. At the offshore area

maximum of PIP appeared at flood tide and minimum of PIP appeared at ebb-tide. The maximum of POP presented at about 10:00am

which suggests that POP is closely related to biological metabolism. The control factor of POP in seawater was concluded to be biological metabolization.

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references

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