Table 2 Thirteen factors and their scores for severity parameter in CB Nanotool (retrieved from23).

From: An integrated approach to occupational health risk assessment of manufacturing nanomaterials using Pythagorean Fuzzy AHP and Fuzzy Inference System

Surface chemistry of NM, reactivity and capacity to induce free radicals

Low: 0

Medium: 5

Unknown: 7.5

High: 10

Particle shape of NM

Spherical/compact: 0

Anisotropic: 5

Tubular/fibrous: 10

Unknown: 7.5

Particle diameter of NM

\(<\) 41–100 nm: 0

11–40 nm: 5

1–10 nm: 10

Unknown: 7.5

Solubility of NM

Soluble: 5

Insoluble: 10

Unknown: 7.5

 

Carcinogenicity of NM

Yes: 7.5

No: 0

Unknown: 5.625

 

Reproductive toxicity of NM

Yes: 7.5

No: 0

Unknown: 5.625

 

Mutagenicity of NM

Yes: 7.5

No: 0

Unknown: 5.625

 

Dermal toxicity of NM

Yes: 7.5

No: 0

Unknown: 5.625

 

Toxicity of PM

0–1  μg/m3: 10

2–10 μg/m3: 5

\(<\) 41–100 μg/m3: 2.5

> 100 μg/m3:0

Unknown: 7.5

Carcinogenicity of PM

Yes: 7.5

No:0

Unknown: 3.75

 

Reproductive toxicity of PM

Yes: 7.5

No:0

Unknown: 3.75

 

Mutagenicity of PM

Yes: 7.5

No: 0

Unknown: 3.75

 

Dermal toxicity of PM

Yes: 7.5

No: 0

Unknown: 3.75