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

第一作者： Li, Zhonghua

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

作者机构：

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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