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相关概念视频

Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

232
Sampling materials are classified into three main types: solid, liquid, and gas.
Solid samples include a variety of substances, such as sediments from water bodies, soil, metals, and biological tissues. Two standard methods for extracting sediments from water bodies are grab sampling and piston coring. Grab sampling involves using a device to collect a discrete sediment sample from the bottom of a water body with minimal disturbance. Grab samples do not always represent the entire area due to...
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Sampling Plans01:23

Sampling Plans

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Sampling is a crucial step in analytical chemistry, allowing researchers to collect representative data from a large population. Common sampling methods include random, judgmental, systematic, stratified, and cluster sampling.
Random sampling is a method where each member of the population has an equal chance of being selected for the sample. It involves selecting individuals randomly, often using random number generators or lottery-type methods. For example, when analyzing the properties of a...
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关于压载水中代表性采样方法的建议:陆地测试的案例研究.

Ling Yuan1, Jieyou Xiang1, Junzeng Xue1

  • 1College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Centre for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China.

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|November 21, 2023
PubMed
概括

标准化压载水采样方法对于有效的入侵物种管理至关重要. 这项研究推了特定的流量和样本量,以确保在不同大小类别中进行准确的生物评估.

关键词:
压载水是压载水中的一个.压载水采样 压载水采样合规监测的监控是为了确保合规性.采用代表性抽样.风险评估 风险评估 风险评估

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科学领域:

  • 海洋生物学 海洋生物学
  • 环境科学环境科学
  • 水生入侵物种管理

背景情况:

  • 准确评估压载水成分和生物度对于有效管理至关重要.
  • 由于缺乏标准化的全球采样方法,这给跨区域和船舶数据的可比性带来了挑战.
  • 不一致的方法阻碍了有效的压载水处理和排放调节.

研究的目的:

  • 建立合适的陆地基方法,用于压载水采样.
  • 制定标准化协议,用于评估水中的社区组成和生物度.
  • 为了促进有效的压载水管理,并制入侵水生物种的传播.

主要方法:

  • 进行陆地测试以评估采样方法.
  • 确定不同生物体大小类 (≥50微米,≥10微米至<50微米,<10微米) 的最大流量,以防止细胞损伤.
  • 建立了推的样本体积 (≥1m3,20L),以确保对各种生物体大小进行代表性采样.

主要成果:

  • 推的最大流量:生物体≥50μm和≥10μm至<50μm的最大流量为50L/分钟;生物体<10μm的最大流量为25L/分钟.
  • 建议的样本体积:≥1m3对于≥50μm的生物体;20 L对于≥10μm至<50μm和<10μm的生物体.
  • 采样应包括大量的排放时间,以进行全面的评估.

结论:

  • 标准化采样方法对于在不同地区和船舶类型中准确评估压载水至关重要.
  • 实施推的流量和样本量将提高生物体度数据的可靠性.
  • 标准化将支持有效的压载水管理策略,保护水生生态系统免受入侵物种侵害.