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Related Concept Videos

Precipitation and Co-precipitation01:17

Precipitation and Co-precipitation

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Precipitation and coprecipitation methods can be used to separate a mixture of ions in a solution. In qualitative inorganic analysis, ions that form sparingly soluble precipitates with the same reagent are separated based on the differences in solubility products. For example, consider the separation of Cu(II) and Fe(II) ions by precipitation as insoluble sulfides. First, copper(II) sulfide is precipitated by the addition of acidic H2S, where the dissociation of H2S is suppressed. Adding H2S...
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Predicting Precipitation
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Precipitation Gravimetry01:03

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Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
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Gravimetry: Inorganic And Organic Precipitating Agents00:49

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In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...
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The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...
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Volatilization01:10

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Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...
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  1. Home
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  5. Chemical Sciences
  7. Analytical Chemistry
  9. Quality Assurance, Chemometrics, Traceability And Metrological Chemistry
  11. Dataset Of Chemical Elements Concentrations In Snow Samples Collected In Jelgava City (latvia) In 2021, 2022, 2023.
  1. Home
  3. Research Domains
  5. Chemical Sciences
  7. Analytical Chemistry
  9. Quality Assurance, Chemometrics, Traceability And Metrological Chemistry
  11. Dataset Of Chemical Elements Concentrations In Snow Samples Collected In Jelgava City (latvia) In 2021, 2022, 2023.

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Dataset of chemical elements concentrations in snow samples collected in Jelgava City (Latvia) in 2021, 2022, 2023.

Jovita Pilecka-Ulcugaceva1, Anda Bakute1, Maris Bertins2

  • 1Latvia University of Life Sciences and Technologies, Liela Street 2, Jelgava, LV-3001, Latvia.

Data in Brief
|November 11, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

This study analyzed chemical element concentrations in Jelgava snow from 2021-2023. Datasets reveal high variability in urban pollution, offering insights into air quality and green infrastructure effectiveness.

Keywords:
Air pollutionAtmospheric depositionContaminantsUrban air quality

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Area of Science:

  • Environmental Science
  • Analytical Chemistry
  • Urban Ecology

Background:

  • Urban environments accumulate atmospheric pollutants in snow.
  • Monitoring chemical elements in snow provides insights into pollution sources and levels.
  • Jelgava's air quality and green infrastructure effectiveness require detailed assessment.

Purpose of the Study:

  • To present datasets on chemical element concentrations in Jelgava snow samples (2021-2023).
  • To provide a basis for analyzing urban air quality and evaluating green infrastructure.
  • To support the assessment of pollution mitigation measures and identify areas for action.

Main Methods:

  • Snow samples collected from 59 urban sites and 1 rural control site in Jelgava.
  • Sampling conducted on January 9, 2021, February 4, 2022, and January 9, 2023, after at least six days of snow accumulation.
  • Analysis of 14 chemical elements (Al, Si, Cr, Mn, Fe, Ni, Cu, Zn, As, Mo, Cd, Ba, W, Pb) using Inductively Coupled Plasma Mass Spectrometry (ICP-MS).

    • Main Results:

    • High variability in element concentrations observed across sampling sites and years.
    • Zinc (Zn) concentrations ranged from 3.44 to 35.12 µg/L (median 7.5 µg/L).
    • Lead (Pb) concentrations reached up to 3.77 µg/L in urban areas, compared to 0.95 µg/L at the control site, indicating urban pollution impact.

    Conclusions:

    • The compiled dataset offers fundamental scientific value for local and regional urban air quality analysis.
    • The data supports the evaluation of Jelgava's green infrastructure and its role in air quality improvement.
    • The dataset is valuable for assessing pollution mitigation effectiveness and identifying priority areas for environmental action.