Kangas J, Jäppinen P, Savolainen H
Am Ind Hyg Assoc J. 1984 Dec;45(12):787-90. doi: 10.1080/15298668491400647.
An hygienic survey for hydrogen sulfide, methyl mercaptan and its derivatives and sulfur dioxide in kraft mills and in sulfite mills revealed concentrations varying from 0 to 20 ppm hydrogen sulfide, 0 to 15 ppm methyl mercaptan and comparable amounts of dimethyl sulfide with dimethyl disulfide up to 1.5 ppm. The greatest emissions were detected at chip chutes and evaporation vacuum pumps. Batch operations yielded clearly higher sulfur dioxide concentrations (up to 20 ppm) as compared to a continuous ammonia-base digester. Furthermore, there was a strong correlation with the season in the sulfite mills where higher concentrations were found in the winter when natural ventilation was poorer. As to the health effects, the exposed workers complained of headaches and a decrease in concentration capacity more often than matched controls. The number of sick leaves was greater in the exposed workers than among the controls.
一项针对硫酸盐制浆厂和亚硫酸盐制浆厂中硫化氢、甲硫醇及其衍生物以及二氧化硫的卫生调查显示，硫化氢浓度在0至20 ppm之间，甲硫醇浓度在0至15 ppm之间，二甲基硫和二甲基二硫的含量相当，最高可达1.5 ppm。在木片滑槽和蒸发真空泵处检测到的排放量最大。与连续氨法蒸煮器相比，间歇操作产生的二氧化硫浓度明显更高（高达20 ppm）。此外，在亚硫酸盐制浆厂，与季节有很强的相关性，冬季自然通风较差时浓度较高。至于健康影响，与匹配的对照组相比，接触工人抱怨头痛和注意力集中能力下降的情况更为频繁。接触工人的病假天数比对照组更多。
