| Cite this article: | 罗惠莉,杨怡萱,黄一璐,等.灌溉沟渠水中双酚类环境激素含量和分布特点[J].灌溉排水学报,2022,():-. |
| LUO Huili,YANG Yixuan,HUANG Yilu,et al.灌溉沟渠水中双酚类环境激素含量和分布特点[J].灌溉排水学报,2022,():-. |
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| Content and distribution characteristic of bisphenol environmental hormones in irrigation water |
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LUO Huili, YANG Yixuan, HUANG Yilu, XIE Zhenzeng
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Hunan Agricultural University
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| Abstract: |
| 【Objective】Bisphenol A (BPA) has been limited due to its potential health risks, and its substitutes, other bisphenols (BPs) appeared in large quantities in industrial production. However, these BPs has also been found to act as environmental hormones. In recent years, BPs has been detected in river and lake water and agricultural products, but its status in irrigation system is unclear. In this study, the species, contents and distribution of BPs in irrigation ditch water and sediment were studied to provide basic data and technical methods for the protection of agricultural environment and the safety of agricultural products. 【Method】A high-performance liquid chromatography-fluorescence (HPLC-FLD) method for simultaneous detection of three BPs was established by optimizing the detection conditions. Effects of filtration and centrifugation on detection of BPs in irrigation water were compared to determine the appropriate sample pretreatment method. Through field sampling and testing, the main BPs contents and distribution characteristics of vegetable fields and paddy ditches were analyzed. 【Result】A linear HPLC-FLD detection method was established and LOD of BPS was 0.2 μg/L while LOD of BPF and BPA were both 0.02 μg/L. The recoveries of ditch water samples were 76.69%~99.03% after centrifugation. Detection rates and contents of BPF in irrigation ditch water and sediments were high as that detection rates were 100% and 88.89% and the biggest contents were 1.45 μg/L and 587.4 μg/kg. Contents of BPF, BPA and BPS in sediment were up to 962.95 times, 871.82 times and 72.81 times of that in water. 【Conclusion】Centrifugation was more suitable than filtration to treat water samples due to there was more suspended particles in the irrigation water. BPF and BPA were easily adsorbed on particles while BPS was present in water. BPF was the main BPs in irrigation water and sediment tested in this study and it accumulated in large amount in sediments. Therefore, attention should be paid to BPs in particulate matter and sediment in irrigation ditch water. |
| Key words: liquid chromatography; bisphenols; environmental hormones; irrigation |
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