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Related Concept Videos

Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

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Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
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Gravimetry: Overview01:05

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Gravimetric analysis is a quantitative method where the analyte is isolated and weighed directly or after conversion into a substance of known composition. Gravimetric analysis can be classified as precipitation, electrogravimetry, volatilization, and particulate gravimetry, based on the method used to isolate the analyte.
In precipitation gravimetry, the analyte is converted into a precipitate and weighed. For example, the silver content in a sample can be estimated by precipitating and...
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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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Atomic Emission Spectroscopy: Lab01:29

Atomic Emission Spectroscopy: Lab

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AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
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Composition and Distribution Analysis of Bioaerosols Under Different Environmental Conditions
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Quantifying the pollution changes and meteorological dependence of airborne trace elements coupling source

Haolin Wang1, Xu Guan2, Jiao Li3

  • 1Academician Workstation for Big Data Research in Ecology and Environment, Environmental Research Institute, Shandong University, Qingdao 266237, China.

The Science of the Total Environment
|July 4, 2024
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Meteorological conditions significantly impact airborne trace elements (TEs) and health risks, increasing pollution during high-emission periods. Understanding these factors is crucial for mitigating health threats from TEs and PM2.5.

Keywords:
Health riskPMFTEsWeather normalization

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Area of Science:

  • Environmental Science
  • Atmospheric Chemistry
  • Public Health

Background:

  • Airborne trace elements (TEs) in fine particulate matter (PM2.5) pose significant risks to human health and ecosystems.
  • Meteorological conditions are known to influence air pollution levels and characteristics.

Purpose of the Study:

  • To investigate the impact of meteorological conditions on the pollution characteristics and health risks of airborne TEs.
  • To identify the sources of TEs contributing to health risks, especially during polluted periods.

Main Methods:

  • Utilized weather normalization and health risk assessment models to quantify meteorological impacts on TEs and associated risks.
  • Employed source apportionment approaches to analyze TE contributions from various sources at four sites in Shandong Province.

Main Results:

  • TE concentrations and health risks were higher during polluted periods due to meteorological influences.
  • Selenium (Se), manganese (Mn), and lead (Pb) showed the greatest meteorological influence; chromium (Cr) and Mn posed the highest health risks.
  • Industrialized centers, urban areas, and road dust were identified as key sources of TEs, influenced by wind speeds.

Conclusions:

  • Meteorological conditions have a dual effect on TEs, exacerbating pollution and health risks during high-emission episodes.
  • Mitigation strategies should consider both primary TE emissions and the influence of meteorology, particularly during pollution events, to effectively reduce health risks.