Song Min, Han Dianfeng, Hu Shunxin, Cui Qingkui, Li Huanjun, Li Fan, Zhang Jianbai, Liu Yongchun, Zhao Mei, Zhang Cunxin, Xu Yingjiang
College of Food Sciences & Technology, Shanghai Ocean University, Shanghai 200120, China.
Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai 264006, China.
Toxics. 2024 Nov 30;12(12):877. doi: 10.3390/toxics12120877.
Short-chain chlorinated paraffins (SCCPs) are a persistent organic pollutant, and limited information is available on their bioaccumulation and trophic transfer, which would be affected by carbon chain length, chlorine content, and hydrophobicity. In this study, relevant data on SCCPs in water, sediments, and organisms collected from Laizhou Bay were analyzed to investigate the specific distribution of SCCPs and their bioaccumulation and trophic transfer. In water and sediments, the average SCCP concentrations (ΣSCCPs) were 362.23 ± 81.03 ng/L and 609.68 ± 90.28 ng/g d.w., respectively. In 28 species of organisms, the ΣSCCPs varied from 70.05 to 47,244.13 ng/g l.w. (average = 648 ± 7360) and the predominant homologs were C (average = 34.91%) and Cl (average = 93.13%), differing from those in water (average = C 32.75% and average = Cl 88%) and sediments (average = C 31.60% and average = Cl 87.16%). The logarithm bioaccumulation factors (BAFs) of ΣSCCPs were 1.18-2.74 and were positively correlated with the log K. A significant negative linear relationship was observed between biota-sediment accumulation factors (BSAFs) and log K. It is suggested that the hydrophobicity may affect the bioaccumulation of SCCPs. SCCPs demonstrated a trophic magnification factor (TMF) ranging from 2.19 to 3.00 (average = 2.51) and exhibited a significant linear correlation with carbon chain length ( < 0.05) and log K values ( < 0.05), suggesting that SCCPs have biomagnification potential in Laizhou Bay that is affected by hydrophobicity and carbon chain length.
短链氯化石蜡（SCCPs）是一种持久性有机污染物，关于其生物累积和营养转移的信息有限，而这会受到碳链长度、氯含量和疏水性的影响。在本研究中，分析了从莱州湾采集的水、沉积物和生物体中SCCPs的相关数据，以研究SCCPs的具体分布及其生物累积和营养转移情况。在水和沉积物中，SCCPs的平均浓度（ΣSCCPs）分别为362.23±81.03 ng/L和609.68±90.28 ng/g干重。在28种生物体中，ΣSCCPs的范围为70.05至47244.13 ng/g湿重（平均=648±7360），主要同系物为C（平均=34.91%）和Cl（平均=93.13%），与水中（平均=C 32.75%，平均=Cl 88%）和沉积物中（平均=C 31.60%，平均=Cl 87.16%）的情况不同。ΣSCCPs的对数生物累积因子（BAFs）为1.18 - 2.74，且与log K呈正相关。生物-沉积物累积因子（BSAFs）与log K之间观察到显著的负线性关系。这表明疏水性可能会影响SCCPs的生物累积。SCCPs的营养放大因子（TMF）范围为2.19至3.00（平均=2.51），并与碳链长度（<0.05）和log K值（<0.05）呈现出显著的线性相关性，表明SCCPs在莱州湾具有受疏水性和碳链长度影响的生物放大潜力。
