引用本文: | 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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摘要: |
【目的】双酚A(BPA)因其潜在健康风险而使用受限,随之其替代品,其他双酚类化合物(BPs)大量出现在工业生产中。然而这些BPs也被发现具有环境激素效应。近年来在河、湖水体和农产品中已检出BPs,但其在灌溉系统中的状况尚不明确。本研究通过对灌溉沟渠水和沉积物中BPs的种类、含量和分布的研究,为保护农业环境和农产品安全提供技术方法和基础数据。【方法】通过优化检测条件,建立同时检测3种BPs的高效液相色谱-荧光(HPLC-FLD)检测方法。通过比较过滤和离心两种处理方法对灌溉水样的检测影响,确定适宜的样品前处理方法。通过实地采样检测,分析菜地和稻田沟渠水和沉积物中主要BPs的含量和分布特点。【结果】建立了线性良好的HPLC-FLD检测方法,双酚S(BPS)的LOD为0.2 μg/L;双酚F(BPF)和BPA的LOD均为0.02 μg/L。沟渠水样经离心处理后的添加回收率达到76.69%~99.03%。沟渠水和沉积物中BPF的检出率和检出量均较高,检出率分别为100%和88.89%;最大检出量分别为1.45 μg/L和587.4 μg/kg。沉积物中BPF,BPA和BPS的含量最高为水相中其含量的962.95倍,871.82倍和72.81倍。【结论】灌溉水中悬浮颗粒物较多,采用离心处理水样比过滤更适宜。BPF和BPA易附着在颗粒物上,而BPS则易存在于水中。BPF是本次检测的灌溉水及其沉积物中的主要BPs,其大量积存于沉积物。因此,灌溉沟渠水中颗粒物及沉积物中的BPs需引起重视。 |
关键词: 液相色谱;双酚;环境激素;灌溉 |
DOI: |
分类号:X52 |
基金项目:第二次全国污染源普查专项项目(CLPSP18GZ02ZC95,G-201906-01) |
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Content and distribution characteristic of bisphenol environmental hormones in irrigation water |
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 |