Variation in metal concentrations in the brown alga Undaria pinnatifida in Osaka Bay, Japan
Variation in metal concentrations in the brown alga Undaria pinnatifida in Osaka Bay, Japan
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DOI：
10.1111/j.1440-1835.2007.00465.x
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发表时间：
2007-09-01
影响因子：
1.5
通讯作者：
Kawai, Hiroshi
中科院分区：
文献类型：
--
作者：
Yamada, Mika;Yamamoto, Koshi;Kawai, Hiroshi
为了评估有用的生物监测系统，利用海藻评估沿海海水中的金属离子的地理分布，金属浓度在孢子体的一年生海带，裙带菜（哈维）Suringar，收集在15个地点在大坂湾，日本和比较。从清洁的孢子体的中心部分切下约160 cm（2）的叶片，使用超声波清洗浴在过滤的海水中冲洗，并冷冻干燥。样品经12%HNO3微波消解后，用电感耦合等离子体质谱法测定样品中的金属含量。大多数检查的元素的浓度（干重）在百万分之一范围内;铬，0.48-3.18;镍，0.77-5.94;铜，3.20-43.8;锌，11.3-86.8;铅，0.14-3.53。比较了美国和日本的金属成分。从海湾东北部地区，其中有一个大的城市人口和高度发达的工业内陆地区的pinnatifida样品，显示出高浓度的Cd，Pb和Cu相比，从海湾的西南部地区的人口和工业要小得多。这表明，U。羽裂藻金属负荷可作为追踪沿海海水金属浓度地理分布的标志，反映造船、港区修船等内陆人类活动，并可作为沿海环境长期趋势的有用生物监测系统。
In order to evaluate the usefulness of a biomonitoring system using seaweeds for assessing the geographic distribution of metal ions in coastal seawaters, the metal concentrations in the sporophytes of an annual kelp, Undaria pinnatifida (Harvey) Suringar, were collected at 15 localities in Osaka Bay, Japan and compared. About 160 cm(2) of the blade was cut out from the central part of clean sporophytes, rinsed in filtered seawater using an ultrasonic cleaning bath, and freeze-dried. After digestion with 12% HNO3 in a microwave apparatus, metal concentrations in the samples were determined by inductively coupled plasma mass spectrometry. The concentrations (dry weight basis) of most examined elements were in the parts per million range; Cr, 0.48-3.18; Ni, 0.77-5.94; Cu, 3.20-43.8; Zn, 11.3-86.8; Pb, 0.14-3.53. Comparisons of metal compositions of the U. pinnatifida samples from the northeastern area of the bay, which has a large urban population and highly developed industries inland, showed high concentrations of Cd, Pb and Cu compared with the samples from the southwestern area of the bay where the population and industries are much smaller. This suggests that U. pinnatifida metal loads can be used as a marker to track the geographic distributions of the metal concentrations in coastal seawaters, reflecting inland human activities such as shipbuilding and repairing in port areas, and can be used as a useful biomonitoring system of coastal environments for long-term trend.