Research on the atmospheric occurrence of short chain chlorinated paraffins (SCCPs) in industrialized areas is scarce. In this study, we investigated the concentrations, profile, and spatial distribution of SCCPs in the highly industrialized and developed areas of the Yangtze River Delta (YRD) in China using polyurethane foam passive air samplers. Sampling was performed during two separate periods in 2011. The concentrations of atmospheric SCCPs ranged from 6.1 to 63 ng m⁻³ in summer and 6.2–42 ng m⁻³ in winter. The C₁₀ and C₁₁ groups were the predominant carbon groups in all the samples. Different congener patterns between summer and winter were found, indicating that congeners in the air in winter may be influenced by local and external sources. The highest level of SCCPs was found in Suzhou, which is a highly industrialized area with many manufactories including electronic industries and plastic factories. Higher levels of SCCPs were found in the air than polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), and polybrominated diphenyl ether (PBDEs), suggesting that the production and use of SCCPs were much higher than prohibited or restricted persistent organic pollutants (e.g., PCBs, OCPs, and PBDEs). Future studies should investigate the different sources of atmospheric SCCPs by conducting a comprehensive assessment of SCCP exposure.

缺乏对工业化地区短链氯化石蜡（SCCP）在大气中发生的研究。在这项研究中，我们使用聚氨酯泡沫被动空气采样器研究了长江三角洲高度工业化和发达地区的短链氯化石蜡的浓度，分布和空间分布。2011年在两个不同的时期进行了采样。夏季，大气短链氯化石蜡的浓度范围为6.1至63 ng m ^-3，冬季为6.2-42 ng m ^-3。C ₁₀和C ₁₁所有样品中主要的碳基是碳基团。发现夏季和冬季之间存在不同的同类模式，这表明冬季空气中的同类可能受到本地和外部来源的影响。最高水平的短链氯化石蜡在苏州，这是一个高度工业化的地区，有许多工厂，包括电子工业和塑料工厂。在空气中发现的短链氯化石蜡含量比多氯联苯（PCBs），有机氯杀虫剂（OCP）和多溴联苯醚（PBDEs）高，这表明短链氯化石蜡的生产和使用远远高于禁止或限​​制的持久性有机污染物（例如： ，PCB，OCP和PBDE）。未来的研究应通过对短链氯化石蜡的暴露进行全面评估，调查大气短链氯化石蜡的不同来源。