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. 2020 Jul 9;10(1):11282.
doi: 10.1038/s41598-020-67771-3.

Complex study of air pollution in electroplating workshop

Affiliations

Complex study of air pollution in electroplating workshop

K Yu Kirichenko et al. Sci Rep. .

Abstract

A comprehensive analysis of the state of air inside an industrial workshop with electroplating production was carried out. The data of quantitative distribution of suspended particles by size fractions (PM0.3, PM0.5, PM1, PM3, PM5, PM10) are presented for 15 main processes of electroplating. Morphometric and chemical composition of the surface of particles were studied. We observed particles of rounded shape, various agglomerates with complex geometric shapes, acute-angular particles, which when inhaled pose a maximum threat to human health. Chemical analysis of these particles showed an absolute predominance of oxides of non-ferrous metals, the percentage of which varied depending on the type of electroplating bath. The content of highly hazardous substances of the 1st (Zn, Pb, and Cd) and the 2nd (Cu, Cr, Ni, Co, and Mo) hazard classes in each sample was recorded.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Sampling of industrial aerosol particles in the electroplating workshop. H = 1.5 m (Example).
Figure 2
Figure 2
Comparison of size distribution of particles of electroplating origin from all processes.
Figure 3
Figure 3
Size distribution of particles in sample 1) No. 4 (aluminum degreasing), and 2) No. 12 (nickel plating).
Figure 4
Figure 4
Aluminum cleaning. Particles morphology. Scanning electronic microscopy. 1) Magnification ×1,200, 2) Magnification ×2,200.
Figure 5
Figure 5
Aluminum etching. Particles morphology. Scanning electronic microscopy. Magnification ×300.
Figure 6
Figure 6
Sulfuric acid anodizing. Particles morphology. Scanning electronic microscopy.
Figure 7
Figure 7
Aluminum degreasing. Particles morphology. Scanning electronic microscopy. Magnification ×950.
Figure 8
Figure 8
Chemical degreasing. Particles morphology. Scanning electronic microscopy. Measuring interval 50 µm.
Figure 9
Figure 9
Cathodic degreasing 3. Particles morphology. Scanning electronic microscopy. Measuring interval 100 µm.
Figure 10
Figure 10
Cathodic degreasing 4. Particles morphology. Scanning electronic microscopy. Measuring interval 50 µm.
Figure 11
Figure 11
Cold rinse. Particles morphology. Scanning electronic microscopy. Measuring interval 20 µm.
Figure 12
Figure 12
Desmutting. Particles morphology. Scanning electronic microscopy. Measuring interval 20 µm.
Figure 13
Figure 13
Nonferrous metals etching. Particles morphology. Scanning electronic microscopy. Measuring interval 50 µm.
Figure 14
Figure 14
Chromium plating. Particles morphology. Scanning electronic microscopy. 1) Measuring interval 50 µm, 2) Measuring interval 5 µm.
Figure 15
Figure 15
Nickel plating. Particles morphology. Scanning electronic microscopy. 1) Measuring interval 20 µm, 2) Measuring interval 50 µm.
Figure 16
Figure 16
Chemical nickel plating. Particles morphology. Scanning electronic microscopy. Measuring interval 10 µm.
Figure 17
Figure 17
Cadmium plating. Particles morphology. Scanning electronic microscopy. 1) Measuring interval 20 µm, 2) measuring interval 10 µm.
Figure 18
Figure 18
Silvering. Particles morphology. Scanning electronic microscopy. 1) Measuring interval 20 µm.

References

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