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Temporal variability of indoor dust concentrations of semivolatile organic compounds
Indoor Air ( IF 5.8 ) Pub Date : 2020-10-06 , DOI: 10.1111/ina.12759
Kyunghoon Kim 1 , Hyeong-Moo Shin 1 , Luann Wong 2 , Thomas M Young 2 , Deborah H Bennett 3
Affiliation  

The determinants of the temporal variability of indoor dust concentrations of semivolatile organic compounds (SVOCs) remain mostly unexplored. We examined temporal variability of dust concentrations and factors affecting dust concentrations for a wide range of SVOCs. We collected dust samples three times from 29 California homes during a period of 22 months and quantified concentrations of 47 SVOCs in 87 dust samples. We computed intraclass correlation coefficients (ICCs) using three samples collected within the same house. We calculated correlation coefficients (r) between two seasons with similar climate (spring and fall) and between two seasons with opposite climate (summer and winter). Among 26 compounds that were detected in more than 50% of the samples at all three visits, 20 compounds had ICCs above 0.50 and 6 compounds had ICCs below 0.50. For 19 out of 26 compounds, correlation coefficients between spring and fall (r = 0.48‐0.98) were higher than those between summer and winter (r = 0.09‐0.92), implying seasonal effects on dust concentrations. Our study showed that within‐home temporal variability of dust concentrations was small (ICC > 0.50) for most SVOCs, but dust concentrations may vary over time for some SVOCs with seasonal variations in source rates, such as product use.

中文翻译:

半挥发性有机化合物室内粉尘浓度的时间变化

室内半挥发性有机化合物 (SVOC) 粉尘浓度随时间变化的决定因素大多仍未探索。我们检查了各种 SVOC 的粉尘浓度的时间变化和影响粉尘浓度的因素。我们在 22 个月内从加利福尼亚的 29 个家庭中收集了 3 次灰尘样本,并对 87 个灰尘样本中 47 种 SVOC 的浓度进行了量化。我们使用在同一所房子内收集的三个样本计算了组内相关系数 (ICC)。我们计算了相关系数 ( r) 两个气候相似的季节(春季和秋季)之间和两个气候相反的季节(夏季和冬季)之间。在所有 3 次访问中超过 50% 的样品中检测到的 26 种化合物中,20 种化合物的 ICC 高于 0.50,6 种化合物的 ICC 低于 0.50。对于 26 种化合物中的 19 种,春季和秋季之间的相关系数( r = 0.48-0.98) 高于夏季和冬季之间的相关系数 ( r  = 0.09-0.92),这意味着对尘埃浓度的季节性影响。我们的研究表明,对于大多数 SVOCs,灰尘浓度的家庭内时间变化很小(ICC > 0.50),但对于某些 SVOCs,灰尘浓度可能随时间而变化,并且源速率有季节性变化,例如产品使用。
更新日期:2020-10-06
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