Tang Shi-Zhan, Chen Zhong-Xiang, Hao Qi-Rui, Hu Yao-Peng, Wang Ji-Long, Qin Dong-Li, Wang Peng, Wang Hai-Tao
Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, China.
Heilongjiang River Basin Fishery Ecological Environment Monitoring Center, Ministry of Agriculture and Rural Affairs, Harbin 150070, China.
MethodsX. 2024 Sep 2;13:102944. doi: 10.1016/j.mex.2024.102944. eCollection 2024 Dec.
This study optimized a gas chromatography-tandem triple quadrupole mass spectrometry (GC-MS/MS) method for the determination of 21 persistent organic pollutants (POPs) in Irtysh River water, including 14 organochlorines (OCPs) and 7 polychlorinated biphenyls (PCBs). Factors such as column temperature ramping, selection of qualitative and quantitative ion pairs and collision energy were considered to achieve perfect separation and accurate quantification of all 21 target compounds. The limits of detection (LOD) for PCBs and OCPs ranged from 0.21 to 1.18 ng/L. Applying this method to detect POPs in the Irtysh River revealed concentrations of OCPs ranging from ND to 20.2 ng/L and PCBs from ND to 0.411 ng/L. Source analysis indicated that POPs in the Irtysh River mainly originate from historical industrial and agricultural activities, particularly the deliberate use of pesticides. To ensure ecological safety and human health, expanding the range of target analytes and monitoring periods is necessary. This study provides:•Qualitative and quantitative analysis methods for 7 PCBs and 14 OCPs.•Recoveries achieved ranged between 74.6 to 109 % with RSD less than 15 %.•Analysis of sources, transport pathways, accumulation status, and ecological risks of PCBs and OCPs in the Irtysh River.
本研究优化了一种气相色谱 - 串联三重四极杆质谱法（GC-MS/MS），用于测定额尔齐斯河水中的21种持久性有机污染物（POPs），其中包括14种有机氯化合物（OCPs）和7种多氯联苯（PCBs）。考虑了诸如柱温程序升温、定性和定量离子对的选择以及碰撞能量等因素，以实现所有21种目标化合物的完美分离和准确定量。PCBs和OCPs的检测限（LOD）范围为0.21至1.18 ng/L。应用该方法检测额尔齐斯河中的POPs，结果显示OCPs浓度范围为ND至20.2 ng/L，PCBs浓度范围为ND至0.411 ng/L。源分析表明，额尔齐斯河中的POPs主要源于历史上的工农业活动，尤其是农药的蓄意使用。为确保生态安全和人类健康，有必要扩大目标分析物的范围和监测周期。本研究提供了：•7种PCBs和14种OCPs的定性和定量分析方法。•回收率在74.6%至109%之间，相对标准偏差（RSD）小于15%。•额尔齐斯河中PCBs和OCPs的来源、迁移途径、积累状况及生态风险分析。
