Partitioning of phthalates among the gas phase, airborne particles and dust in indoor and outdoor environments

• Main Authors: Hong-Bin Cho, 卓弘斌
• Other Authors: Chia-Wei Lee
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/06598718772502195454

碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程研究所 === 101 === People spend most of the time in indoor environment such as house, school and office. Phthalate esters (PAEs) exposure associated with harmful health effects has been raising public concerns. The major goal of the current study is to investigate the occurrence and concentration of PAEs in indoor dust, gaseous and particle phases (PM2.5) from kindergartens (including daycare centers), elementary schools, households and other indoor environments in Southern Taiwan and to assess human exposure and health risk to these PAEs. Most of sampling sites were selected from Tainan and Kaoshiung cities, and samplings were conducted using vacumn suction (dust), filtration (PEM/ quartz filter for PAEs in PM2.5) and adsorption (XAD-2 for gaseous PAEs). The median total concentrations of nine PAEs analyzed in dust from kindergartens/daycare centers, element schools, households and shopping mall were 1112.2 (range:1.9-71367.9), 1229.7 (range:180.8-16235.6), 1094.8 (range:16.1 -15728.6) and 1209.6 (range:568.9-4925.4) μg/g dust, respectively. The concentrations of PAEs in gaseous and particle phases are relatively low compared to that in the dust. Most frequently detected PAEs in gas and PM2.5 are DBP, DEHP and DINP. Estimated hazard index of school and household PAEs exposures for children are less than one. The DEHP levels of household dust have been in continuous decline for the past few years in Southern Taiwan, which might be resulted from the substitute replacement for DEHP (such as DINP) after Taiwan DEHP scandal in 2010.