孙梦雪¹,
李清波^1,,,
吕晓宁¹,
陈轩²,
马建民³,
栾晓新¹,
吴静娴¹,
张猛¹
1. 大连海事大学 环境科学与工程学院, 大连 116026;
2. 中国交通运输部科学研究院, 北京 100029;
3. 兰州大学 资源环境学院 甘肃省环境污染预警与控制重点实验室, 兰州 730000

作者简介: 孙梦雪(1989-),女,硕士,研究方向为室内环境监测,E-mail:sunmengxue8899@163.com.

通讯作者: 李清波,drliqb@163.com ;

基金项目: 国家自然科学基金(41371448)；中央高校基本科研业务费专项资金资助(3132016326)


中图分类号: X171.5

Levels and Health Risk Assessment of Cyclic Volatile Methyl Siloxanes in Indoor Air of a University Campus

Sun Mengxue¹,
Li Qingbo^1,,,
Lv Xiaoning¹,
Chen Xuan²,
Ma Jianmin³,
Luan Xiaoxin¹,
Wu Jingxian¹,
Zhang Meng¹
1. College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China;
2. China Academy of Transportation Sciences, Beijing 100029, China;
3. Key Laboratory for Environmental Pollution Prediction and Control, Gansu Province, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, China

Corresponding author: Li Qingbo,drliqb@163.com ;

CLC number: X171.5

-->

摘要
HTML全文
图(0)表(0)
参考文献(0)
相关文章
施引文献
资源附件(0)
访问统计

摘要:利用低流量大气采样器采集了大连某高校家庭、男寝、女寝、办公室、实验室中空气样品,分析了样品中4种环状挥发性甲基硅氧烷(cyclic volatile methyl siloxanes,cVMSs):六甲基环三硅氧烷(D3)、八甲基环四硅氧烷(D4)、十甲基环五硅氧烷(D5)、十二甲基环六硅氧烷(D6)的浓度水平、组分特征及其来源,并采用美国国家环境保护局(US-EPA)健康风险评价模型对D5人体健康风险进行了评价。结果表明监测期间室内环境空气中D3、D4、D5与D6检出率均为100%,室内环境总硅氧烷(ΣcVMSs)平均浓度为(12.4±20.7) μg·m^-3,范围为0.29~78.4 μg·m^-3。办公室与实验室浓度水平最高的为D3,而女寝与家庭为D5,男寝为D6。由于女寝中个人护理品的频繁使用,女寝空气中ΣcVMSs浓度水平分别为男寝、家庭、办公室、实验室的46、80、27、55倍。D5对人体的非致癌危险商值范围为2.14E-04~4.31E-02,对暴露人群尚不存在明显的非致癌风险。
关键词: 环状挥发性甲基硅氧烷/
室内空气/
浓度水平/
健康风险

Abstract:Four cyclic volatile methyl siloxanes (cVMSs), including D3 (hexamethylcyclotrisiloxane), D4 (octamethylcyclotetrasiloxane), D5 (decamethylcyclopentasiloxane) and D6 (dodecamethylcyclohexasiloxane), were determined in indoor air samples collected from a university in Dalian City using a novel low-volume air sampler. A range of different microenvironments, including an apartment, a male dormitory, a female dormitory, a laboratory and an office, were investigated. The levels, profiles and sources of these compounds were measured and estimated. In addition, health risk of human exposure to D5 was assessed by US Environmental Protection Agency (US-EPA) health risk assessment model. Results showed that D3, D4, D5 and D6 were found in all the samples and the concentration (mean ± SD) of Σ₄ cVMSs was measured as (12.4 ± 20.7) μg·m^-3, ranging from 0.29 to 78.4 μg·m^-3. D3, D5 and D6 was measured with the highest concentration in the office and the lab, the female dormitory and the apartment, and the male dormitory respectively. The concentration of Σ₄ cVMSs in the female dormitory was measured as 46, 80, 27 and 55 times higher than that in the male dormitory, the apartment, the office and the lab, respectively. Possible explanations include the relatively frequent uses of pharmaceuticals and personal care products (PCPs) by female students. Non-cancer hazard quotient (HQ) for D5 was estimated as from 2.14E-04 to 4.31E-02, indicating that no non-cancer health risks exist for the exposed population.
Key words:cVMSs/
indoor air/
ambient level/
human health risk.