期刊
HARMFUL ALGAE
卷 84, 期 -, 页码 56-63出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hal.2019.01.009
关键词
VOCs spectrum; Non-methane hydrocarbons (NMHC); Methane; Dynamic headspace; Release rate; On-line monitoring
资金
- Research Fund of Environmental Monitoring of Jiangsu Province [1603]
- PEIYOU Project of Changzhou Environmental Monitoring Center [201814-PY]
The spectrum of Volatile Organic Compounds (VOCs) released by the microalgae-water phase of Taihu Lake in China was examined, then release behaviors were studied using non-methane hydrocarbons (NMHC, including a few polar organics) to describe the total amount of the released VOCs. Coupled dynamic headspace sampling with on-line monitoring of methane and NMHC was used to reflect the quasi-realtime release behavior of methane and NMHC by the microalgae-water phase. Alkanes, alkenes, oxygenated VOCs (OVOCs) and volatile sulfide chemicals (VOSCs) were detected. Their relative contents over time varied markedly from the stationary to the apoptosis phase, with their release rates as described by NMHC estimated from 0.02 to 0.59 mu gC/(h g). Methane was investigated simultaneously, and its release rate was found to be 0.05-3.96 mu gC/(h g). The release rates of both NMHC and methane were found to relate to the culture phase of the microalgae.
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