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April 19, 2024

According to Decree 280-2024 published on February 28, 2024, in the Gazette officielle du Québec, the amendment to the Appendix 1 of the Regulation respecting occupational health and safety (RSST, RLRQ, c. S-2.1, r. 13) will come into force on March 14, 2024. These regulatory changes have not yet been incorporated into the current Substance Data Sheets of the Sampling Guide for Air Contaminants in the Workplace. An update is currently underway and will be available as soon as possible. Consequently, the information contained in the data sheets of substances modified or added in Decree 280-2024 is partially inaccurate or incomplete. Please consult our infoLABO (in French only) for more details. Please contact our client service: [email protected] for further information.

Diesel particulates

French name in the regulation: Particules diesel

Not in the regulation.

CNESST – Toxicological Index Service

Consult REPTOX file:

Analysis:

Carbone total

Method: IRSST - 388

Sampling device:
Sampling media required:
#IRSSTDescription
952 Treated quartz filters, 25 mm

Parameters:
Flow rate: 1,7 (nylon) 2,75 (GS3) L/min
TWA sampling volume: 720 L
STEL sampling volume: -
Remarks: A cyclone is required for sampling.

Principle: Thermal-optical with flame ionization detection (TO-FID)
Precision (%): 10
Minimum reported value: 3 µg
Remarks: The analysis method yields an organic carbon and elemental carbon result. The sum of the two results yields the total carbon result. Sample results are corrected for the field blank. The field blank must be found on the same analysis request as the associated samples and must be from the same lot as the samples. It is advisable to report the presence of carbonates in the samples to the laboratory if carbonates are potentially present. IRSST method 388 is equivalent to the method NIOSH 5040: Diesel Particulate Matter, version 3 of March 15, 2003, published by the National Institute for Occupational Safety and Health (NIOSH).

IRSST. "Détermination des particules de diesel (exprimée en Carbone total) dans l'air". Méthode 388. Méthodes analytiques. Montréal: IRSST, 2016. Non publiée.

Carbone total

Method: IRSST - 388

Sampling device:
Sampling media required:
#IRSSTDescription
953 Treated quartz filters, 37 mm

Parameters:
Flow rate: 1,7 (nylon) 2,75 (GS3) L/min
TWA sampling volume: 720 L
STEL sampling volume: -
Remarks: A cyclone is required for sampling.

Principle: Thermal-optical with flame ionization detection (TO-FID)
Precision (%): 10
Minimum reported value: 3 µg
Remarks: The analysis method yields an organic carbon and elemental carbon result. The sum of the two results yields the total carbon result. Sample results are corrected for the field blank. The field blank must be found on the same analysis request as the associated samples and must be from the same lot as the samples. It is advisable to report the presence of carbonates in the samples to the laboratory if carbonates are potentially present. IRSST method 388 is equivalent to the method NIOSH 5040: Diesel Particulate Matter, version 3 of March 15, 2003, published by the National Institute for Occupational Safety and Health (NIOSH).

IRSST. "Détermination des particules de diesel (exprimée en Carbone total) dans l'air". Méthode 388. Méthodes analytiques. Montréal: IRSST, 2016. Non publiée.
Following the amendment of Appendix 1 of the Quebec Regulation respecting occupational health and safety (RSST, RLRQ, c. S-2.1, r. 13), part of Quebec Occupational Health and Safety Act, which came into effect on March 26, 2020, the TWAEV, STEL and Ceiling values for certain substances are now expressed in ppm. For these substances, the IRSST performed the conversion calculations to express these TWAEV, TWA and Ceiling values in mg/m3, which thus appears in its Sampling Guide for Air Contaminants in the Workplace (Guide d'échantillonnage des contaminants de l'air en milieu de travail ) and the associated Substance Data Sheets. However, it is imperative to refer to the values expressed in the RSST which are legally binding.