Guangdong Laboratory for Lingnan Modern Agriculture, Guangdong Provincial Key Laboratory of Agricultural & Rural Pollution Abatement and Environmental Safety, College of Natural Resources and Environment, South China Agricultural University, Guangzhou, 510642, China.
College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, 510642, China.
Environ Sci Pollut Res Int. 2023 Nov;30(55):117340-117348. doi: 10.1007/s11356-023-30547-z. Epub 2023 Oct 21.
The distinct accumulation patterns of persistent organic pollutants (POPs) among granivorous groups and the biomagnification of POPs from crops to granivorous species are still unclear. In this study, occurrence and biomagnification of POPs in three granivorous species including spotted dove (Spilopelia chinensis), scaly-breasted munia (Lonchura punctulata), and reed vole (Microtus fortis Buechner) from a former e-waste recycling site were investigated. Concentrations of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in granivorous species ranged from 41.5 to 1370 and 21.1 to 3890 ng/g lipid weight, respectively. PCBs and PBDEs were the main POPs in birds and vole, while decabromodiphenyl ethane (DBDPE) and PBDEs were predominant POPs in crops. The dominance of BDE 209 was observed in samples, with few exceptions. Biomagnification factors (BMFs) of POPs in birds and vole were measured. BMFs of most POPs in vole were higher than those in birds, indicating that POPs had greater biomagnification potential in vole. Species-specific biomagnification of POPs might be affected by many factors, such as physiochemical properties and metabolic capability of POPs. There was significant correlation between concentration ratios of POPs in muscle/air and log K, which demonstrated that respiratory elimination to air affects biomagnification of POPs in granivorous birds and vole.
在食谷动物群中，持久性有机污染物（POPs）的明显积累模式以及从作物到食谷物种的 POPs 的生物放大作用仍不清楚。在本研究中，研究了来自前电子废物回收场的三种食谷物种，包括珠颈斑鸠（Spilopelia chinensis）、斑文鸟（Lonchura punctulata）和黑线姬鼠（Microtus fortis Buechner）中 POPs 的发生和生物放大作用。食谷物种中多氯联苯（PCBs）和多溴二苯醚（PBDEs）的浓度范围分别为 41.5 至 1370 和 21.1 至 3890ng/g 脂质重量。PCBs 和 PBDEs 是鸟类和黑线姬鼠中的主要 POPs，而十溴二苯乙烷（DBDPE）和 PBDEs 是作物中的主要 POPs。除了少数例外，样品中均观察到 BDE 209 的主导地位。测量了鸟类和黑线姬鼠中 POPs 的生物放大因子（BMFs）。大多数 POPs 在黑线姬鼠中的 BMFs 高于鸟类，表明 POPs 在黑线姬鼠中有更大的生物放大潜力。POPs 的种特异性生物放大可能受到许多因素的影响，例如 POPs 的理化性质和代谢能力。POPs 在肌肉/空气的浓度比与 log K 之间存在显著相关性，这表明呼吸向空气中的消除会影响食谷鸟类和黑线姬鼠中 POPs 的生物放大。
