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相关概念视频

Sampling Methods: Sample Types01:18

Sampling Methods: Sample Types

300
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...
300
Atomic Absorption Spectroscopy: Lab01:21

Atomic Absorption Spectroscopy: Lab

498
For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
 Solutions containing organic solvents, such as low-molecular-mass alcohols, esters, or ketones, enhance absorbances by increasing...
498
Sampling Plans01:23

Sampling Plans

219
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...
219

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Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
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采样方法:使用家用仪器进行准确,可访问的测量.

Rebecca A Stern1, Joy Lawrence1, Jack M Wolfson1

  • 1Department of Environmental Health, Harvard T.H. Chan School of Public Heath, Boston, Massachusetts, USA.

Journal of the Air & Waste Management Association (1995)
|June 13, 2023
PubMed
概括

价格实惠的Ecosense子监测器准确地测量室内子水平,这是导致肺癌的主要原因. 这些设备为房屋所有者和研究人员提供了一种可靠,具有成本效益的解决方案,用于在住宅中持续监测.

科学领域:

  • 环境健康 环境健康
  • 公共卫生 公共卫生
  • 毒理学 毒理学 毒理学

背景情况:

  • 是一种致癌气体,是美国肺癌的主要原因,除了吸烟.
  • 住宅环境是暴露于的主要来源.
  • 可访问和准确的测量工具对于公共卫生至关重要.

研究的目的:

  • 为了评估两个家庭级的连续子监测器的准确性和可靠性:Ecosense RadonEye和EcoQube.
  • 为了比较这些负担得起的显示器与研究级仪器的性能.
  • 为了确定 Ecosense 显示器是否适合常规家庭使用.

主要方法:

  • 在住宅环境中持续监测水平.
  • 埃科森斯家用显示器 (RadonEye,EcoQube) 与研究级仪器 (Durridge Rad7,Rad Elec E-PERM) 的比较.
  • 在一系列度度的评估.

主要成果:

  • 埃科森斯家庭子监测仪表表现出了准确的性能.
  • 来自Ecosense监控器的结果与昂贵的研究级仪器可比.
  • 监视器在不同度的住宅环境中可靠地工作.

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结论:

  • 经济实惠的Ecosense连续子监测器是准确和可靠的.
  • 这些设备为房主和租户提供了一种可行的解决方案,用于监测室内水平.
  • 生态感应监测器可以通过改善住宅中的定期监测来支持公共卫生倡议.