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Source identification and concentration distribution of polychlorinated biphenyls in environmental media around

S U Park1, J G Kim, S Masunaga

  • 1Korea Electric Power Research Institute, Daejeon 305-380, South Korea.

Bulletin of Environmental Contamination and Toxicology
|May 28, 2009
PubMed

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Sampling Plans01:23

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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...