湖北秭归鱼泉洞泉域系统中六六六(HCHs)和滴滴涕(DDTs)的分布、来源与迁移

杨秀雯; 魏志莹; 易佳佩; 李雯星; 景一鸣; 秦超杰; 熊俊武; 刘伟; 周宏; 祁士华; 陈伟

doi:10.19509/j.cnki.dzkq.tb20230466

湖北秭归鱼泉洞泉域系统中六六六(HCHs)和滴滴涕(DDTs)的分布、来源与迁移

doi: 10.19509/j.cnki.dzkq.tb20230466

杨秀雯^a,,
魏志莹^a,
易佳佩^a,
李雯星^a,
景一鸣^a,
秦超杰^b,
熊俊武^a,
刘伟^b,
周宏^b,
祁士华^{a, c},
陈伟^{a, b, c, d, ,}

a.
中国地质大学(武汉)环境学院, 武汉 430074
b.
中国地质大学(武汉)地质调查研究院, 武汉 430074
c.
中国地质大学(武汉)生物地质与环境地质国家重点实验室, 武汉 430074
d.
中国地质大学(武汉)长江流域环境水科学湖北省重点实验室, 武汉 430074

基金项目:

国家重点研发计划"场地土壤污染成因与治理技术"重点专项项目 2019YFC1805502

国家自然科学基金青年项目 41907327

国家自然科学基金青年项目 42007178

中国地质调查局地质调查项目 DD2019082

详细信息

作者简介:
杨秀雯, E-mail: yxw1145980705@163.com

通讯作者:
陈伟, E-mail: wei.chen@cug.edu.cn

中图分类号: X143
计量
- 文章访问数: 622
- PDF下载量: 22
- 被引次数: 0
出版历程
- 收稿日期: 2023-08-16
- 录用日期: 2023-12-01
- 修回日期: 2023-11-27

Distribution, sources and transport of HCHs and DDTs in the Yuquandong spring system from Zigui County, Hubei Province

YANG Xiuwen^a
,,
WEI Zhiying^a,
YI Jiapei^a,
LI Wenxing^a,
JING Yiming^a,
QIN Chaojie^b,
XIONG Junwu^a,
LIU Wei^b,
ZHOU Hong^b,
QI Shihua^{a, c},
CHEN Wei^{a, b, c, d
, ,}

a.
School of Environmental Studies, China University of Geosciences(Wuhan), Wuhan 430074, China
b.
Institute of Geological Survey, China University of Geosciences(Wuhan), Wuhan 430074, China
c.
State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences(Wuhan), Wuhan 430074, China
d.
Key Laboratory of Yangtze Catchment Environmental Aquatic Science, China University of Geosciences(Wuhan), Wuhan 430074, China

More Information

Author Bio:
YANG Xiuwen, E-mail: yxw1145980705@163.com

Corresponding author: CHEN Wei, E-mail: wei.chen@cug.edu.cn

摘要

摘要:
岩溶区特殊的地形地貌, 使得地表环境中的有机氯农药(OCPs)很容易进入地下环境, 对地下水的安全构成威胁。采用气相色谱-电子捕获检测器(GC-ECD)对湖北秭归鱼泉洞泉域系统中的典型OCPs——六六六(HCHs)和滴滴涕(DDTs)进行了检测, 探究了其时空分布特征、潜在污染来源和迁移特征。结果表明: 水体中HCHs质量浓度范围为0.09~5.17 ng/L, 土壤和泉沉积物中HCHs质量分数范围分别为0.36~3.67, 0.11~2.53 ng/g; 水体中DDTs质量浓度范围为0.13~7.16 ng/L, 土壤和泉沉积物中DDTs质量分数范围分别为0.22~19.13, 0.73~11.53 ng/g, 呈现出以DDTs为主的污染特征。水体中HCHs和DDTs质量浓度在冬季最高; 土壤中HCHs和DDTs质量分数分别在夏季和冬季达到最高; 泉沉积物中HCHs和DDTs质量分数分别在夏季和春季达到峰值。特征比值结果显示, 水体、土壤和泉沉积物中HCHs主要源于林丹的使用; 水体中DDTs主要源于历史残留, 而土壤和泉沉积物中DDTs主要来源于近期使用。相关性分析结果表明, HCHs和DDTs可从补给区地表水和补给区土壤分别向排泄区泉水和泉沉积物中迁移。HCHs和DDTs在介质中的快速迁移证实了岩溶区地下水的脆弱性。本研究成果可以为岩溶地下水资源和环境的保护提供参考。
- 岩溶区 /
- 六六六(HCHs) /
- 滴滴涕(DDTs) /
- 来源 /
- 迁移 /
- 有机氯农药(OCPs) /
- 鱼泉洞泉域 /
- 湖北秭归
Abstract: <p>The special topography of karst areas allows organochlorine pesticides (OCPs) from the surface environment to easily infiltrate the underground environment, posing a threat to groundwater security.</p></sec><sec><title>Methods
In this study, a gas chromatography-electron capture detector (GC-ECD) was used to detect two typical OCPs, namely, HCHs and DDTs, in the Yuquandong spring system in Zigui, Hubei.
Objective
This study investigated spatial and temporal distribution characteristics, sources and transport of HCHs and DDTs.
Results
The results showed that the mass concentrations of HCHs in the water ranged from 0.09 to 5.17 ng/L, and the mass fractions of HCHs in the soils and spring sedimentsranged from 0.36 to 3.67, 0.11 to 2.53 ng/g, respectively, mass concentrations of DDTs in the water ranged from 0.13 to 7.16 ng/L, and the mass fractions of DDTs in the soils and spring sedimentsranged from 0.22 to 19.13, 0.73 to 11.53 ng/g, indicating that the pollution was dominated by DDTs. The highest mass concentrations of HCHs and DDTs in water were observed in winter; the highest mass fractions of HCHs and DDTs in the soils were observed in summer and winter, respectively; and the mass fractions of HCHs and DDTs in the spring sediments peaked in summer and spring, respectively. Characteristic ratios showed that HCHs in water, soils and spring sediments mainly originated from lindane usage, DDTs in water mainly originated from historical residues, and DDTs in the soils and spring sediments mainly originated from recent usage. Correlation analysis indicated that HCHs and DDTs could be transported from the surface water and the soils in the recharge area to the spring water and spring sediments in the discharge area, respectively. The rapid transport of HCHs and DDTs across multiple media confirmed groundwater vulnerability in karst areas.
Conclusion
The study can provide a reference for the protection of karst groundwater resources and the environment.
- karst area /
- HCHs /
- DDTs /
- source /
- transport /
- organochlorine pesticides(OCPs) /
- Yuquandong spring system /
- Zigui County, Hubei Province
注释:

所有作者声明不存在利益冲突。

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图 1 湖北秭归鱼泉洞泉域采样点位置(a, b)及水文地质剖面图(c)

Figure 1. Sampling sites(a, b) and hydrogeological profile(c) for the Yuquandong spring system from Zigui County, Hubei Province

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图 2 鱼泉洞泉域水体中Σ₄HCHs(a)和Σ₆DDTs(b)的时空分布

Figure 2. Spatial and temporal distributions of Σ₄HCHs (a) and Σ₆DDTs (b) in water from the Yuquandong spring system

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图 3 鱼泉洞泉域土壤中Σ₄HCHs(a)和Σ₆DDTs(b)的时空分布

Figure 3. Spatial and temporal distributions of Σ₄HCHs (a) and Σ₆DDTs (b) in soils from the Yuquandong spring system

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图 4 鱼泉洞泉域泉沉积物中Σ₄HCHs和Σ₆DDTs的时空分布

Figure 4. Spatial and temporal distributions of Σ₄HCHs and Σ₆DDTs in spring sediments from the Yuquandong spring system

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图 5 鱼泉洞泉域不同季节HCHs(a~d)和DDTs(e~h)的组成特征

Figure 5. Composition characteristics of HCHs (a-d) and DDTs (e-h) in different seasons from the Yuquandong spring system

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图 6 鱼泉洞泉域HCHs(a)和DDTs(b, c)的特征比值

Figure 6. Characteristic ratios of HCHs (a) and DDTs (b, c) from the Yuquandong spring system

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表 1 鱼泉洞泉域水体中HCHs和DDTs的质量浓度及检出率

Table 1. Mass concentrations and detection rates of HCHs and DDTs in water from the Yuquandong spring system

物质	补给区地表水			排泄区泉水
物质	范围/(ng·L^-1)	均值/(ng·L^-1)	检出率/%	范围/(ng·L^-1)	均值/(ng·L^-1)	检出率/%
α-HCH	＜MDL~0.99	0.26	63	＜MDL~0.70	0.18	25
β-HCH	＜MDL~1.19	0.27	88	0.03~0.72	0.26	100
γ-HCH	＜MDL~1.44	0.22	75	＜MDL~1.00	0.26	50
δ-HCH	0.03~2.02	0.64	100	0.03~1.12	0.34	100
Σ₄HCHs	0.09~5.17	1.39	100	0.12~3.55	1.04	100
o, p′-DDE	0.02~0.51	0.17	100	0.02~0.39	0.17	100
p, p′-DDE	0.01~0.51	0.13	100	0.02~0.41	0.12	100
o, p′-DDD	0.02~0.33	0.14	100	0.02~0.27	0.10	100
p, p′-DDD	0.01~0.73	0.17	100	0.02~0.59	0.16	100
o, p′-DDT	0.03~2.30	0.49	100	＜MDL~0.04	0.02	75
p, p′-DDT	0.02~2.78	0.61	100	＜MDL~2.36	0.61	75
Σ₆DDTs	0.21~7.16	1.71	100	0.13~4.03	1.19	100
注：Σ₄HCHs表示α-HCH、β-HCH、γ-HCH和δ-HCH的和；Σ₆DDTs表示o, p′-DDE、p, p′-DDE、o, p′-DDD、p, p′-DDD、o, p′-DDT和p, p′-DDT的和；＜MDL表示低于检出限(下同)

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表 2 鱼泉洞泉域土壤中HCHs和DDTs的质量分数及检出率

Table 2. Mass fractions and detection rates of HCHs and DDTs in soils from the Yuquandong spring system

物质	补给区土壤			排泄区土壤
物质	范围/(ng·g^-1)	均值/(ng·g^-1)	检出率/%	范围/(ng·g^-1)	均值/(ng·g^-1)	检出率/%
α-HCH	0.13~2.98	1.05	100	0.13~2.04	0.61	100
β-HCH	＜MDL~0.57	0.21	100	0.13~0.26	0.18	100
γ-HCH	＜MDL~0.28	0.19	88	0.12~1.23	0.43	100
δ-HCH	0.13~0.27	0.21	100	0.12~1.04	0.38	100
Σ₄HCHs	0.36~3.67	1.67	100	0.49~2.71	1.60	100
o, p′-DDE	＜MDL~0.23	0.15	88	0.04~2.01	0.82	100
p, p′-DDE	0.07~0.29	0.12	100	0.08~0.94	0.42	100
o, p′-DDD	0.03~0.78	0.17	100	0.03~0.08	0.05	100
p, p′-DDD	＜MDL~0.07	0.05	88	0.07~10.49	2.70	100
o, p′-DDT	＜MDL~1.86	0.73	88	0.23~7.20	3.29	100
p, p′-DDT	＜MDL~1.30	0.51	63	0.31~5.83	2.24	100
Σ₆DDTs	0.22~3.53	1.73	100	0.75~19.13	9.52	100

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表 3 鱼泉洞泉域中HCHs和DDTs含量的皮尔逊相关系数(r)

Table 3. Spearman correlation coefficients (r) of HCHs and DDTs concentrations from the Yuquandong spring system

	地表水	泉水	补给区土壤	排泄区土壤	泉沉积物
地表水	1
泉水	0.78^**	1
补给区土壤	0.09	-0.05	1
排泄区土壤	0.22	0.17	0.15	1
泉沉积物	-0.15	-0.12	0.43^**	0.24	1
** 在0.01水平，相关性显著

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