Japan’s Ministry of Health Labour and Welfare proposes guidelines for measuring workplace exposure limits

2023-05-25 Reference source : Japan

In March 2023, Japan’s Ministry of Health, Labour, and Welfare (MHLW) proposed revised guidelines for measuring workplace exposure limits for hazardous substances under the country’s Industrial Safety and Health Act (ISHA).

A public consultation on the revised technical guidelines for the application of concentration standards was initiated in March 2023, by the MHLW in order to reduce health risks from chemical compounds. The consultation ended on 5 April 2023. The guidelines are expected to be enforced on 1 April 2024.

The guidelines include details on the risk reduction measures, workplace concentration standard values (exposure limits) with their application, and workplace exposure measuring methods for 73 substances including their sampling and analysis methods.

The list of substances includes:

Substance Name	Sampling method	Analysis Method
Acetonitrile	Solid collection method	Gas chromatograph analysis
Acetaldehyde	Solid collection method	High Performance Liquid Chromatograph Analysis
Ethyl acrylate	Solid collection method	Gas chromatograph analysis
Hydroquinone	Hydroquinone	High Performance Liquid Chromatograph Analysis
Phenylhydrazine	Liquid collection method	High Performance Liquid Chromatograph Analysis
1-bromopropane	Solid collection method	Gas chromatograph analysis
Thallium	Filtration collection method	Inductively coupled plasma mass spectrometry
Aniline	Filtration collection method	Gas chromatograph analysis

We acknowledge that the above information has been compiled from Japan.

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Japan’s Ministry of Health Labour and Welfare proposes guidelines for measuring workplace exposure limits

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