

FOLLOWUS
1.CAS Key Laboratory of Marine Ecology and Environmental Sciences, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
2.Laboratory for Marine Ecology and Environmental Science, Qingdao Marine Science and Technology Center, Qingdao 266214, China
3.University of Chinese Academy of Sciences, Beijing 100049, China
4.Marine Monitoring and Forecasting Center of Zhejiang Province, Hangzhou 310007, China
fzkong@qdio.ac.cn
Received:22 January 2024,
Online First:17 June 2024,
Published:01 May 2025
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WANG Jinxiu,KONG Fanzhou,NIU Zhuang,et al.Selection of protocols for phytoplankton pigment analysis: a comparative study[J].Journal of Oceanology and Limnology,2025,43(03):817-830.
WANG Jinxiu,KONG Fanzhou,NIU Zhuang,et al.Selection of protocols for phytoplankton pigment analysis: a comparative study[J].Journal of Oceanology and Limnology,2025,43(03):817-830. DOI: 10.1007/s00343-024-4025-9.
Pigments are widely used as indices for estimation of phytoplankton biomass and composition
and many protocols have been developed to analyze pigments in phytoplankton. Different protocols were compared using four solvents (methanol
95% methanol
dimethylformamide
and 90% acetone) and two instruments (fluorometer and high-performance liquid chromatography (HPLC) coupled with diode array detector). Analysis of chlorophyll
a
(Chl
a
) with fluorometer could lead to over- or underestimation due to the interference from its derivatives in all probability. Among the four extractants
90% acetone had a high recovery for chlorophylls. In contrast
95% methanol was a poor extractant for chlorophylls due to the degradation of Chl
a
especially in diatoms. The 95% methanol
however
had high extraction efficiencies for most diagnostic xanthophylls. Therefore
the selection of pigment analytical protocols should follow the specific purpose of phytoplankton study. In addition to fluorometry
an HPLC method with 90% acetone as extractant shall be a good choice for the analysis of Chl
a
to estimate phytoplankton biomass
especially for diatom-dominated samples
while an HPLC method with 95% methanol as extractant be more suitable to characterize different taxa in phytoplankton communities.
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