当前位置: X-MOL 学术PLOS ONE › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Emission characteristics of diethylhexyl phthalate (DEHP) from building materials determined using a passive flux sampler and micro-chamber.
PLOS ONE ( IF 2.9 ) Pub Date : 2019-09-20 , DOI: 10.1371/journal.pone.0222557
Naohide Shinohara 1 , Atsushi Mizukoshi 2 , Mayumi Uchiyama 3 , Hirofumi Tanaka 3
Affiliation  

Emission rates of diethylhexyl phthalate (DEHP) from building materials, such as vinyl floorings and wall paper, determined using a passive flux sampler (PFS) were constant over the week-long measurement period. Emission rates for vinyl floorings and wallpaper were linearly correlated to the inverse of diffusion distance, which corresponds to the internal depth of the PFS. Surface-air DEHP concentrations (y0) were estimated as 1.3-2.3 μg/m3 for materials having a boundary layer molecular diffusion rate-limiting step. The partition coefficient (Kmaterial-air) was estimated as 3.3-7.5 × 1010 for these materials. Additionally, emission rates of DEHP from same building materials determined using a micro-chamber were 4.5-6.1 μg/m2/h. Mass transfer coefficients in the micro-chamber (hm) were estimated by comparing the results using the PFS and micro-chamber, and these were 1.1-1.2 × 10-3 and 8.1 × 10-4 m/s for vinyl floorings (smooth surface) and wallpaper (rough surface), respectively. The thickness of boundary layer on the surface of building materials in the micro-chamber were estimated to be 2.5-2.6 and 3.7 mm for vinyl floorings and wallpaper, respectively.

中文翻译:

使用无源通量采样器和微型腔室确定的邻苯二甲酸二乙基己酯(DEHP)从建筑材料的排放特性。

使用被动式通量采样器(PFS)确定的建筑材料(例如,乙烯基地板和墙纸)中邻苯二甲酸二乙基己酯(DEHP)的排放速率在一周的测量期内保持恒定。乙烯基地板和墙纸的排放速率与扩散距离的倒数线性相关,扩散距离与PFS的内部深度相对应。对于具有边界层分子扩散速率限制步骤的材料,表面空气DEHP浓度(y0)估计为1.3-2.3μg/ m3。这些材料的分配系数(Kmaterial-air)估计为3.3-7.5×1010。此外,使用微腔室测定的相同建筑材料中DEHP的排放速率为4.5-6.1μg/ m2 / h。通过比较使用PFS和微腔室的结果来估算微腔室中的传质系数(hm),对于乙烯基地板(光滑的表面),传质系数为1.1-1.2×10-3和8.1×10-4 m / s )和墙纸(粗糙表面)。对于乙烯基地板和墙纸,微室中建筑材料表面的边界层厚度估计分别为2.5-2.6和3.7 mm。
更新日期:2019-09-21
down
wechat
bug