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Fugacity and kinetic models reveal specific-fate of geosmin in air-water-fish microcosm and channel catfish ( Ictalurus punctatus) )

文献类型： 外文期刊

作者： Li, Zhonghua 1 ; Zhong, Liqiang 3 ; Chen, Xi 2 ; Qiu, Liping 2 ; Zhang, Haixin 7 ; Xu, Huimin 2 ; Fan, Limin 1 ; Meng, Shunlong 1 ; Song, Chao 1 ;

作者机构： 1.Nanjing Agr Univ, Wuxi Fisheries Coll, Wuxi 214081, Peoples R China

2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China

3.Freshwater Fisheries Res Inst Jiangsu Prov, Nanjing 210017, Peoples R China

4.Minist Agr & Rural Affairs, Lab Qual & Safety Risk Assessment Aquat Prod Envir, Wuxi 214081, Peoples R China

5.Minist Agr & Rural Affairs, Key Lab Control Qual & Safety Aquat Prod, Beijing 100141, Peoples R China

6.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Key Lab Freshwater Fisheries & Germplasm Resources, Minist Agr & Rural Affairs, Wuxi 214081, Peoples R China

7.Fisheries Res Inst Jiangxi Prov, Nanchang 330039, Peoples R China

关键词： Odorant; Catfish; One-compartment model; Bioaccumulation; Multimedia fugacity

期刊名称：AQUACULTURE REPORTS （ 影响因子：3.2； 五年影响因子：3.5 ）

ISSN： 2352-5134

年卷期： 2024 年 38 卷

页码：

收录情况： SCI

摘要： Geosmin (GSM) is a ubiquitous odorant found in aquatic environments and organisms, with significant impacts on drinking water and aquaculture. However, its transfer from contaminated water to fish tissues is poorly investigated, resulting in limited information on its bioconcentration and environmental behavior. Fugacity and one-compartment models were developed to describe the fate, transformation, and transport of GSM in an airwater-fish system and analyze its uptake, distribution, and elimination kinetics in channel catfish (Ictalurus punctatus). The results showed that the fugacity model calculations indicated that 81.3 % of GSM was found in water for all microcosm. The primary mass transfer processes from water were water-air diffusion process (T21v) and that from water to fish (T2 f), with values of 67.3 and 22.54 mu g/h, respectively. The emission rate (E2) and area (A2) in water parameters are most sensitive to GSM concentration, impacting the distribution and variance of contaminant concentration. Kinetic studies in fish revealed that GSM primarily accumulate in the muscle and skin, with the earthy-odor burden of fish contributed by the former, reaching 86.59 %. The uptake rate constant (kup), depuration rate constant (kde), and half-lives (t1/2) fell within the ranges of 0.737-3.534 L/(kg & sdot;h), 0.024-0.097 1/h, and 7.1-28.9 h, respectively. Bioaccumulation factors (BAFs) for GSM in fish skin, muscle, and liver tissues were 105.79, 61.71, and 51.22 L/kg, respectively. GSM was effectively depurated by other tissues within 72 h, while 18.16 % remained in skin. The liver demonstrated the most accurate curve (R2=0.97), followed by skin and muscle, with the gill showing the worst simulation. This work offers insights into understanding the fate and mass transfer flux of trace odorants in environmental and biological phases.

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