Sampling efficiency of a polyurethane foam air sampler:Effect of temperature  

作　　者：Qiu-Liang Cai Cen-Yan Huang Lei Tong Ning Zhong Xiao-Rong Dai Jian-Rong Li Jie Zheng Meng-Meng He Hang Xiao 

机构地区：[1]Key Laboratory of Urban Environment and Health,Ningbo Observation and Research Station,Institute of Urban Environment,Chinese Academy of Sciences,Xiamen,361021,China [2]Key Laboratory of Ecological Environment Analysis and Pollution Control in Western Guangxi Region,College of Agriculture and Food Engineering,Baise University,Baise,533000,China [3]College of Biological and Environmental Sciences,Zhejiang Wanli University,Ningbo,315100,China [4]Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control,CAS Haixi Industrial Technology Innovation Center in Beilun,Ningbo,315830,China [5]Minnan Normal University,Zhangzhou,363000,China

出　　处：《Environmental Science and Ecotechnology》2024年第2期43-52,共10页环境科学与生态技术（英文）

基　　金：supported by the National Natural Science Foundation of China(No.21976171,41905115);the CAS Strategic Priority Research Program(XDA23020301);the Guangxi Key Research and Development Program(GuikeAB21220063);the Ministry of Science and Technology of the People's Republic of China(2016YFE0112200),and Guangxi First-class Disciplines(Agricultural Resources and Environment).

摘　　要：Effective monitoring of atmospheric concentrations is vital for assessing the Stockholm Convention's effectiveness on persistent organic pollutants(POPs).This task,particularly challenging in polar regions due to low air concentrations and temperature fluctuations,requires robust sampling techniques.Furthermore,the influence of temperature on the sampling efficiency of polyurethane foam discs remains unclear.Here we employ a flow-through sampling(FTS)column coupled with an active pump to collect air samples at varying temperatures.We delved into breakthrough profiles of key pollutants,such as polycyclic aromatic hydrocarbons(PAHs),polychlorobiphenyls(PCBs),and organochlorine pesticides(OCPs),and examined the temperature-dependent behaviors of the theoretical plate number(N)and breakthrough volume(VB)using frontal chromatography theory.Our findings reveal a significant relationship between temperature dependence coefficients(K_(TN),K_(TV))and compound volatility,with decreasing values as volatility increases.While distinct trends are noted for PAHs,PCBs,and OCPs in KTN,KTV values exhibit similar patterns across all chemicals.Moreover,we establish a binary linear correlation between log(V_(B)/m^(3)),1/(T/K),and N,simplifying breakthrough level estimation by enabling easy conversion between N and VB.Finally,an empirical linear solvation energy relationship incorporating a temperature term is developed,yielding satisfactory results for N at various temperatures.This approach holds the potential to rectify temperature-related effects and loss rates in historical data from long-term monitoring networks,benefiting polar and remote regions.

关 键 词：TEMPERATURE Theoretical plate number Breakthrough volume Frontal chromatographic theory LSER 

分 类 号：X51[环境科学与工程—环境工程]