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气相色谱法检测红树林湿地土壤中氯/溴代多环芳烃

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建立了气相色谱-电子捕获检测器(GC-ECD)法检测红树林湿地土壤中18种氯/溴代多环芳烃(Cl/Br-PAHs)同类物,探究了土壤样品的前处理方法,并验证了方法的有效性。该方法的检出限和加标回收率分别为0。21~3。75ng/gdw和64。9%~106。4%,相对标准偏差为0。42%~14。13%。与GC-MS方法相比,GC-ECD方法对于多数Cl/Br-PAHs的准确度和灵敏度相当,且该方法稳定性更好,测定成本更低,可以满足湿地土壤中CUBr-PAHs的定性定量分析。采用所建立的方法对广西红树林湿地土壤样品进行了检测,结果显示,湿地土壤样品中Cl/Br-PAHs的总含量范围为163。24~244。45ng/gdw。
Determination of chlorinated and brominated polycyclic aromatic hydrocarbons in mangrove wetland soils using gas chromatography
A gas chromatography-electron capture detector(GC-ECD)method was established to detect 18homologues of Cl/Br-PAHs in soils sampled from mangrove wetlands in Guangxi.The results indicate that a total Cl/Br-PAH content ranged from 163.24 to 244.45ng/g dw in wetland soils.The detection limits and spiked recovery rates were found to range from 0.21 to 3.75ng/g dry weight and from 64.9%to 106.4%,respectively.Compared to the GC-MS method,the GC-ECD method exhibited similar accuracy and sensitivity for most Cl/Br-PAHs and offered better stability and lower analytical costs.This method is thought to be suitable for both qualitative and quantitative analysis of Cl/Br-PAHs in wetland soils.

chlorinated and brominated polycyclic aromatic hydrocarbons(Cl/Br-PAHs)gas chromatography-electron capture detector(GC-ECD)soilmangrove wetlandsemerging contaminants

左梓岑、张丽、倪洁、何真、杨桂朋

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中国海洋大学化学化工学院,山东青岛 266100

自然资源部热带海洋生态系统与生物资源重点实验室,广西北海 536000

氯/溴代多环芳烃(Cl/Br-PAHs) 气相色谱-电子捕获检测器法(GC-ECD) 土壤 红树林湿地 新污染物

国家自然科学基金资助项目山东省自然科学基金资助项目自然资源部热带海洋生态系统与生物资源重点实验室开放基金中央高校基本业务费专项

42276039ZR2021MD0342021QN06202161009

2024

中国环境科学
中国环境科学学会

中国环境科学

CSTPCDCHSSCD北大核心
影响因子:2.174
ISSN:1000-6923
年,卷(期):2024.44(1)
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