一种新的方法来确定大藻中微量的度,并评估特定组织的分布
Ziwei Li1, Asami S Mashio2, Kuo H Wong3
1Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan. liziwei@stu.kanazawa-u.ac.jp.
概括
沿海地区的 (Pt) 污染被使用宏观藻类Undaria pinnatifida.监测. 这种生物监测器在不同的组织中显示出明显的Pt积累模式,有助于跟踪环境Pt水平.
科学领域:
- 环境科学 环境科学
- 海洋生物学 海洋生物学
- 分析化学 分析化学
背景情况:
- (Pt) 被广泛使用,导致环境污染.
- 由于潜在的生态毒理学影响,沿海生态系统需要对Pt积累进行监测.
- 像Undaria pinnatifida这样的大藻类可以积累白金组元素.
研究的目的:
- 评估Undaria pinnatifida作为沿海环境中Pt的生物监测器.
- 开发和优化一种分析方法,用于在藻组织中量化Pt.
- 用U. pinnatifida. 评估沿海地区的人为Pt影响.
主要方法:
- 开发并优化了一种使用感应合等离子体质谱法 (ICP-MS) 来定量Pt的分析协议.
- 确定了使用酸和盐酸的最佳消化条件,以改善Pt回收.
- 来自各种沿海地区的U. pinnatifida的量化组织特异性Pt度.
主要成果:
- 优化的ICP-MS方法实现了高灵敏度,方法空白为16 ppt,检测极限为5 ppt.
- 在不同的U. pinnatifida器官中观察到Pt度的显著空间变化.
- 在叶片,树枝和胞中,Pt度从外部到内部区域下降,而持有物则显示出相反的趋势.
结论:
- Undaria pinnatifida 是一个适合在沿海生态系统中跟踪Pt的生物监测器.
- 在U. pinnatifida.的地面和地下组织之间存在明显的Pt积累行为.
- 该研究强调了使用这种宏观藻类监测Pt空间变化的潜力.
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