Section 142G. The attorney general shall enforce the provisions of sections one hundred and forty-two A to one hundred and forty-two F, inclusive, and the rules and regulations made hereunder in any manufacturing or mechanical establishment or in any other place of employment in so far as the same relate to the health of employees, and the department of public health shall enforce the provisions of said sections and the rules and regulations made hereunder in so far as they apply to the keeping and storage for sale to the public in any mercantile establishment of any of the substances or materials referred to in said sections.