电子废弃物中重金属对鸟类生物多样性的影响——以印度班加罗尔贝兰度湖为例

IF 1.3 Q4 ENVIRONMENTAL SCIENCES
Abhishek Kumar, Ravichandran Chandrahasan
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引用次数: 0

摘要

背景:重金属是电子废物非正式处置带来的全球环境挑战之一,尤其是在疫情后阶段。本研究分析了印度Bengaluru Bellandur湖上的Corvus splendens、Passer domesticus和栖息地的羽毛中3种重金属(Pb、Cd和Cr)的含量。方法:在栖息地采集9份沉积物样品(0 ~ 15 cm),装于聚乙烯袋中,自然收集9份通过换羽现象脱落羽毛的锦鸡和家鸡标本,以避免对鸟类产生冲突的刺激。样本采集时间为凌晨5点至9点。为了测定羽毛和沉积物中的重金属(Pb、Cd和Cr),对样品进行了消化,并用原子吸收光谱法和电感耦合等离子体质谱法(ICP-MS)测定。利用广义线性模型检验了鸟类多样性的协方差结构。结果:污染沉积物与鸟类羽毛的Pearson相关性显著(P<0.05)。各种鸟羽毛中重金属含量差异的方差分析无统计学意义(P<0.05)。结论:锦鸡和家禽鸟的羽毛与血管和通过食物链沉积在血液中的重金属有关,受到重金属污染。与家鸡相比,锦绣鸡羽毛中Cr、Pb和Cd的污染更严重。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of heavy metals from electronic waste on bird species concerning biodiversity: A case study in Bellandur lake, Bengaluru, India
Background: Heavy metals are one of the global environmental challenges from the informal disposal of electronic waste, especially after the post-COVID phase. In the present study, the concentration of three heavy metals (Pb, Cd, and Cr) in the feathers of Corvus splendens, Passer domesticus and roosting sites at Bellandur Lake, Bengaluru, India were analyzed. Methods: A total of nine sediment samples (0-15 cm) were collected from the roosting sites and stored in polyethylene bags, and nine samples of C. splendens and P. domesticus bird shedding feathers through the molting phenomenon were collected naturally to avoid stimuli that can create conflict for the bird. The samples were collected early morning from 5.00 a.m. to 9 a.m. To determine heavy metals (Pb, Cd, and Cr) in feathers and sediments, the samples were digested and subjected to AAS and inductively coupled plasma-mass spectroscopy (ICP-MS). Furthermore, the generalized linear model was analyzed to test the covariance structure of bird diversity. Results: The Pearson’s correlation is found to be significant (P<0.05) for contaminated sediments and the feathers of the bird. Analysis of variance for the difference in the concentration of heavy metals within the bird’s species feathers was not statistically significant (P<0.05). Conclusion: The feathers of C. splendens and P. domesticus bird species are associated with blood vessels and heavy metals deposited in the blood through the food chain, which are contaminated with heavy metals. C. Splendens feathers were more contaminated with Cr, Pb, and Cd compared to P. domesticus feathers bird species.
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来源期刊
CiteScore
2.40
自引率
37.50%
发文量
17
审稿时长
12 weeks
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