Occurrence of algae and algae-related taste and odour (T&O) compounds in the Qingcaosha Reservoir, China

Kejia Zhang, Tuqiao Zhang, Yang Deng, Naiyun Gao, Yulong Yang

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study examined the temporal and spatial variations in the occurrence of major algae and algaerelated taste and odour (T&O) compounds in Qingcaosha Reservoir, China. Water samples were collected monthly from seven sites in the reservoir and analysed using solid phase microextraction combined with gas chromatography-mass spectrometry. Results showed that green algae were dominant over the 9-month study. In addition, cyanobacteria in the summer and early autumn peaked at 3.2 ∼ 9.6 × 106 cell/L. Among the four most common algae-related T&O compounds, dimethyl trisulphide was undetectable at any of the sampling sites, and 2-methylisoborneol (2-MIB), geosmin and β-cyclocitral were frequently over their respective odour threshold levels from August through October. β-cyclocitral concentration was linearly correlated with the concentration of cyanobacteria (R2 = 0.9831). The peak β-cyclocitral concentrations varied from 452 to 1, 293 ng/L and were observed close to the water table. In contrast, high concentrations of 2-MIB and geosmin occurred in the water overlying sediments, probably because some of the 2-MIB and geosmin came from the micro-organisms in the sediments. These results provide important information regarding algae and algae-related T&O compounds in a typical reservoir in estuary and coastal areas, and will be helpful for developing appropriate strategies to minimize undesirable T&O issues in water sources.

Original languageEnglish
Pages (from-to)824-831
Number of pages8
JournalJournal of Water Supply: Research and Technology - AQUA
Volume64
Issue number7
DOIs
StatePublished - 1 Nov 2015

Fingerprint

Odors
Algae
odor
China
alga
Cyanobacteria
Water
cyanobacterium
Solid Phase Microextraction
Estuaries
Chlorophyta
Groundwater
Sediments
Gas Chromatography-Mass Spectrometry
green alga
water
sediment
water table
gas chromatography
temporal variation

Keywords

  • Algae
  • Reservoir water
  • Solid phase micro extraction
  • Taste and odour

Cite this

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abstract = "This study examined the temporal and spatial variations in the occurrence of major algae and algaerelated taste and odour (T&O) compounds in Qingcaosha Reservoir, China. Water samples were collected monthly from seven sites in the reservoir and analysed using solid phase microextraction combined with gas chromatography-mass spectrometry. Results showed that green algae were dominant over the 9-month study. In addition, cyanobacteria in the summer and early autumn peaked at 3.2 ∼ 9.6 × 106 cell/L. Among the four most common algae-related T&O compounds, dimethyl trisulphide was undetectable at any of the sampling sites, and 2-methylisoborneol (2-MIB), geosmin and β-cyclocitral were frequently over their respective odour threshold levels from August through October. β-cyclocitral concentration was linearly correlated with the concentration of cyanobacteria (R2 = 0.9831). The peak β-cyclocitral concentrations varied from 452 to 1, 293 ng/L and were observed close to the water table. In contrast, high concentrations of 2-MIB and geosmin occurred in the water overlying sediments, probably because some of the 2-MIB and geosmin came from the micro-organisms in the sediments. These results provide important information regarding algae and algae-related T&O compounds in a typical reservoir in estuary and coastal areas, and will be helpful for developing appropriate strategies to minimize undesirable T&O issues in water sources.",
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Occurrence of algae and algae-related taste and odour (T&O) compounds in the Qingcaosha Reservoir, China. / Zhang, Kejia; Zhang, Tuqiao; Deng, Yang; Gao, Naiyun; Yang, Yulong.

In: Journal of Water Supply: Research and Technology - AQUA, Vol. 64, No. 7, 01.11.2015, p. 824-831.

Research output: Contribution to journalArticle

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AU - Gao, Naiyun

AU - Yang, Yulong

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